US4293122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe railing system
Assignee: Individual
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Filing: 1979-06-13
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Granted: 1981-10-06
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Expires: 1999-06-13
Abstract
Abstract An improved pipe railing system is disclosed which employs a pair of basic structural parts which may be joined by means of a unique, integral fastening mechanism to form uniform horizontal pipe railings and vertical pipe posts which may be mechanically joined without the need for welding or industrial adhesives. The improved pipe railing structure is a pair of half-cylindrical hollow body members which each have first and second terminal edges with longitudinal fasteners for joining the two halves. A unique fastener anchorage member is disposed along the inner surface of each body member, having a longitudinal recess therein, for receiving and anchoring a fastener in the axial direction. In this manner, the lower body member of a top horizontal railing may be fastened to a vertical post made up of two such body members by means of simple screw fasteners, followed by mechanically snapping an upper cylindrical body member to the lower cylindrical body member thereby completing the top horizontal railing. The resulting pipe railing system provides an aesthetically pleasing, structurally rigid barrier which is inexpensive to produce and easy to install.
Inventors
- 👤 William J. Coleman
- 👤 Jay Logue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:29
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181; E04F11/1836
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
720 words
An improved pipe railing structure, comprising: a first half-cylindrical, hollow body member having first and second terminal edges parallel with a cylindrical axis; a first fastening member disposed along said first terminal edge of said body member, having a first fastening contour; a second fastening member disposed along said second terminal edge of said body member, having a second fastening contour; a first fastener anchorage member disposed along an inner surface of said body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; said first fastener anchorage member further comprising: an annular cylinder connected along one side to said inner surface of said first body member, having a longitudinal slot in the surface thereof to enable a threaded fastener to be axially anchored therein; the structure further comprising: a second half-cylindrical, hollow body member having first and second terminal edges parallel with said cylindrical axis; a third fastening member disposed along said first terminal edge of said second body member, having a third fastening contour complementary to said first fastening contour of said first fastening member on said first body member; a fourth fastening member disposed along said second terminal edge of said second body member, having a fourth fastening contour complementary to said second fastening contour of said second fastening member on said first body member; a second fastener anchorage member disposed along an inner surface of said second body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; said first and third fastening members joining along their respective, complementary contours and said second and fourth fastening members joining along their respective, complementary contours to thereby join said first and second body members to form a unitary, cylindrical pipe railing; said second fastener anchorage member further comprising: an annular cylinder connected along one side to said inner surface of said second body member, having a longitudinal slot in the surface thereof to enable a threaded fastener to be axially anchored therein; said first fastening contour of said first fastening member and said second fastening contour of said second fastening member being a male fastening contour; said third fastening contour of said third fastening member and said fourth fastening contour of said fourth fastening member being a female fastening contour; said first and second terminal edges of said first body member defining a reference plane; said male fastening contour having a first planar surface approximately parallel with said reference plane, extending from said inner surface of said cylindrical body member from which it depends, a second planar surface intersecting said first planar surface at an acute angle forming an edge parallel with said axis, and a third planar surface intersecting said second planar surface at approximately a right angle and coincident with said terminal edge of said cylindrical body member from which it depends; said female fastening contour having a first cantilever portion extending from said inner surface of said cylindrical body member from which it depends and terminating in a segment approximately perpendicular to said reference plane, a second cantilever portion extending from said segment and terminating in a second planar surface approximately parallel with said second planar surface of said male fastening contour, said first cantilever portion, said inner surface from which it depends, and said second cantilever portion forming a cavity with said body member inner surface therein forming a third planar surface approximately parallel with said third planar surface of said male fastening contour and said second cantilever portion having an inwardly facing first planar surface approximately parallel with said first planar surface of said male contour member, said first and third planar surfaces of said female fastening contour terminating in an opening for said cavity; said male fastening contour being joined to said female fastening contour by forcing said second surface of said male contour against said second surface of said female contour thereby bending said first cantilever portion and said second cantilever portion of said female contour to enlarge said opening of said cavity to enable said edge of said male contour to enter said cavity through said opening and said first and third surfaces of said female contour to clamp against said first and third surfaces of said male contour, respectively.
Claim 2
Dependent Claim
720 words
An improved pipe railing structure, comprising: a first half-cylindrical, hollow body member having first and second terminal edges parallel with a cylindrical axis; a first fastening member disposed along said first terminal edge of said body member, having a first fastening contour; a second fastening member disposed along said second terminal edge of said body member, having a second fastening contour; a first fastener anchorage member disposed along an inner surface of said body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; said first fastener anchorage member further comprising: an annular cylinder connected along one side to said inner surface of said first body member, having a longitudinal slot in the surface thereof to enable a threaded fastener to be axially anchored therein; the structure further comprising: a second half-cylindrical, hollow body member having first and second terminal edges parallel with said cylindrical axis; a third fastening member disposed along said first terminal edge of said second body member, having a third fastening contour complementary to said first fastening contour of said first fastening member on said first body member; a fourth fastening member disposed along said second terminal edge of said second body member, having a fourth fastening contour complementary to said second fastening contour of said second fastening member on said first body member; a second fastener anchorage member disposed along an inner surface of said second body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; said first and third fastening members joining along their respective, complementary contours and said second and fourth fastening members joining along their respective, complementary contours to thereby join said first and second body members to form a unitary, cylindrical pipe railing; said second fastener anchorage member further comprising: an annular cylinder connected along one side to said inner surface of said second body member, having a longitudinal slot in the surface thereof to enable a threaded fastener to be axially anchored therein; said first fastening contour of said first fastening member and said second fastening contour of said second fastening member being a male fastening contour; said third fastening contour of said third fastening member and said fourth fastening contour of said fourth fastening member being a female fastening contour; said first and second terminal edges of said first body member defining a reference plane; said male fastening contour having a first planar surface approximately parallel with said reference plane, extending from said inner surface of said cylindrical body member from which it depends, a second planar surface intersecting said first planar surface at an acute angle forming an edge parallel with said axis, and a third planar surface intersecting said second planar surface at approximately a right angle and coincident with said terminal edge of said cylindrical body member from which it depends; said female fastening contour having a first cantilever portion extending from said inner surface of said cylindrical body member from which it depends and terminating in a segment approximately perpendicular to said reference plane, a second cantilever portion extending from said segment and terminating in a second planar surface approximately parallel with said second planar surface of said male fastening contour, said first cantilever portion, said inner surface from which it depends, and said second cantilever portion forming a cavity with said body member inner surface therein forming a third planar surface approximately parallel with said third planar surface of said male fastening contour and said second cantilever portion having an inwardly facing first planar surface approximately parallel with said first planar surface of said male contour member, said first and third planar surfaces of said female fastening contour terminating in an opening for said cavity; said male fastening contour being joined to said female fastening contour by forcing said second surface of said male contour against said second surface of said female contour thereby bending said first cantilever portion and said second cantilever portion of said female contour to enlarge said opening of said cavity to enable said edge of said male contour to enter said cavity through said opening and said first and third surfaces of said female contour to clamp against said first and third surfaces of said male contour, respectively.
Claim 3
Dependent Claim
23 words
The structure of claim 1, wherein said first and second body members are integrally formed, extruded units with cylindrical symmetry along said axis.
Claim 4
Dependent Claim
17 words
The structure of claim 2, wherein said first and second body members have a circular transverse contour.
Claim 5
Dependent Claim
27 words
The structure of claim 3, wherein said structure is composed of a material which is a member of the group consisting of stainless steel, aluminum and plastic.
Claim 6
Dependent Claim
720 words
An improved pipe railing structure, comprising: a first half-cylindrical, hollow body member having first and second terminal edges parallel with a cylindrical axis; a first fastening member disposed along said first terminal edge of said body member, having a first fastening contour; a second fastening member disposed along said second terminal edge of said body member, having a second fastening contour; a first fastener anchorage member disposed along an inner surface of said body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; said first fastener anchorage member further comprising: an annular cylinder connected along one side to said inner surface of said first body member, having a longitudinal slot in the surface thereof to enable a threaded fastener to be axially anchored therein; the structure further comprising: a second half-cylindrical, hollow body member having first and second terminal edges parallel with said cylindrical axis; a third fastening member disposed along said first terminal edge of said second body member, having a third fastening contour complementary to said first fastening contour of said first fastening member on said first body member; a fourth fastening member disposed along said second terminal edge of said second body member, having a fourth fastening contour complementary to said second fastening contour of said second fastening member on said first body member; a second fastener anchorage member disposed along an inner surface of said second body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; said first and third fastening members joining along their respective, complementary contours and said second and fourth fastening members joining along their respective, complementary contours to thereby join said first and second body members to form a unitary, cylindrical pipe railing; said second fastener anchorage member further comprising: an annular cylinder connected along one side to said inner surface of said second body member, having a longitudinal slot in the surface thereof to enable a threaded fastener to be axially anchored therein; said first fastening contour of said first fastening member and said fourth fastening contour of said fourth fastening member being a male fastening contour; said second fastening contour of said second fastening member and said third fastening contour of said third fastening member being a female fastening contour; said first and second terminal edges of said first body member defining a reference plane; said male fastening contour having a first planar surface approximately parallel with said reference plane, extending from said inner surface of said cylindrical body member from which it depends, a second planar surface intersecting said first planar surface at an acute angle forming an edge parallel with said axis, and a third planar surface intersecting said second planar surface at approximately a right angle and coincident with said terminal edge of said cylindrical body member from which it depends; said female fastening contour having a first cantilever portion extending from said inner surface of said cylindrical body member from which it depends and terminating in a segment approximately perpendicular to said reference plane, a second cantilever portion extending from said segment and terminating in a second planar surface approximately parallel with said second planar surface of said male fastening contour, said first cantilever portion, said inner surface from which it depends, and said second cantilever portion forming a cavity with said body member inner surface therein forming a third planar surface approximately parallel with said third planar surface of said male fastening contour and said second cantilever portion having an inwardly facing first planar surface approximately parallel with said first planar surface of said male contour member, said first and third planar surfaces of said female fastening contour terminating in an opening for said cavity; said male fastening contour being joined to said female fastening contour by forcing said second surface of said male contour against said second surface of said female contour thereby bending said first cantilever portion and said second cantilever portion of said female contour to enlarge said opening of said cavity to enable said edge of said male contour to enter said cavity through said opening and said first and third surfaces of said female contour to clamp against said first and third surfaces of said male contour, respectively.
Claim 7
Dependent Claim
720 words
An improved pipe railing structure, comprising: a first half-cylindrical, hollow body member having first and second terminal edges parallel with a cylindrical axis; a first fastening member disposed along said first terminal edge of said body member, having a first fastening contour; a second fastening member disposed along said second terminal edge of said body member, having a second fastening contour; a first fastener anchorage member disposed along an inner surface of said body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; said first fastener anchorage member further comprising: an annular cylinder connected along one side to said inner surface of said first body member, having a longitudinal slot in the surface thereof to enable a threaded fastener to be axially anchored therein; the structure further comprising: a second half-cylindrical, hollow body member having first and second terminal edges parallel with said cylindrical axis; a third fastening member disposed along said first terminal edge of said second body member, having a third fastening contour complementary to said first fastening contour of said first fastening member on said first body member; a fourth fastening member disposed along said second terminal edge of said second body member, having a fourth fastening contour complementary to said second fastening contour of said second fastening member on said first body member; a second fastener anchorage member disposed along an inner surface of said second body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; said first and third fastening members joining along their respective, complementary contours and said second and fourth fastening members joining along their respective, complementary contours to thereby join said first and second body members to form a unitary, cylindrical pipe railing; said second fastener anchorage member further comprising: an annular cylinder connected along one side to said inner surface of said second body member, having a longitudinal slot in the surface thereof to enable a threaded fastener to be axially anchored therein; said first fastening contour of said first fastening member and said fourth fastening contour of said fourth fastening member being a male fastening contour; said second fastening contour of said second fastening member and said third fastening contour of said third fastening member being a female fastening contour; said first and second terminal edges of said first body member defining a reference plane; said male fastening contour having a first planar surface approximately parallel with said reference plane, extending from said inner surface of said cylindrical body member from which it depends, a second planar surface intersecting said first planar surface at an acute angle forming an edge parallel with said axis, and a third planar surface intersecting said second planar surface at approximately a right angle and coincident with said terminal edge of said cylindrical body member from which it depends; said female fastening contour having a first cantilever portion extending from said inner surface of said cylindrical body member from which it depends and terminating in a segment approximately perpendicular to said reference plane, a second cantilever portion extending from said segment and terminating in a second planar surface approximately parallel with said second planar surface of said male fastening contour, said first cantilever portion, said inner surface from which it depends, and said second cantilever portion forming a cavity with said body member inner surface therein forming a third planar surface approximately parallel with said third planar surface of said male fastening contour and said second cantilever portion having an inwardly facing first planar surface approximately parallel with said first planar surface of said male contour member, said first and third planar surfaces of said female fastening contour terminating in an opening for said cavity; said male fastening contour being joined to said female fastening contour by forcing said second surface of said male contour against said second surface of said female contour thereby bending said first cantilever portion and said second cantilever portion of said female contour to enlarge said opening of said cavity to enable said edge of said male contour to enter said cavity through said opening and said first and third surfaces of said female contour to clamp against said first and third surfaces of said male contour, respectively.
Claim 8
Dependent Claim
23 words
The structure of claim 5, wherein said first and second body members are integrally formed, extruded units with cylindrical symmetry along said axis.
Claim 9
Dependent Claim
17 words
The structure of claim 6, wherein said first and second body members have a circular transverse contour.
Claim 10
Dependent Claim
27 words
The structure of claim 7, wherein said structure is composed of a material which is a member of the group consisting of stainless steel, aluminum and plastic.
Claim 11
Dependent Claim
634 words
An improved pipe railing structure, comprising: a first half-cylindrical, hollow body member having first and second terminal edges parallel with a cylindrical axis; a first fastening member disposed along said first terminal edge of said body member, having a first fastening contour; a second fastening member disposed along said second terminal edge of said body member, having a second fastening contour; a first fastener anchorage member disposed along an inner surface of said body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; a second half-cylindrical, hollow body member having first and second terminal edges parallel with said cylindrical axis; a third fastening member disposed along said first terminal edge of said second body member, having a third fastening contour complementary to said first fastening contour of said first fastening member on said first body member; a fourth fastening member disposed along said second terminal edge of said second body member, having a fourth fastening contour complementary to said second fastening contour of said second fastening member on said first body member; a second fastener anchorage member disposed along an inner surface of said second body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; said first and third fastening members joining along their respective, complementary contours and said second and fourth fastening members joining along their respective, complmentary contours to thereby join said first and second body members to form a unitary, cylindrical pipe railing; said first fastening contour of said first fastening member and said second fastening contour of said second fastening member being a male fastening contour; said third fastening contour of said third fastening member and said fourth fastening contour of said fourth fastening member being a female fastening contour; said first and second terminal edges of said first body member defining a reference plane; said male fastening contour having a first planar surface approximately parallel with said reference plane, extending from said inner surface of said cylindrical body member from which it depends, a second planar surface intersecting said first planar surface at an acute angle forming an edge parallel with said axis, and a third planar surface intersecting said second planar surface at approximately a right angle and coincident with said terminal edge of said cylindrical body member from which it depends; said female fastening contour having a first cantilever portion extending from said inner surface of said cylindrical body member from which it depends and terminating in a segment approximately perpendicular to said reference plane, a second cantilever portion extending from said segment and terminating in a second planar surface approximately parallel with said second planar surface of said male fastening contour, said first cantilever portion, said inner surface from which it depends, and said second cantilever portion forming a cavity with said body member inner surface therein forming a third planar surface approximately parallel with said third planar surface of said male fastening contour and said second cantilever portion having an inwardly facing first planar surface approximately parallel with said first planar surface of said male contour member, said first and third planar surfaces of said female fastening contour terminating in an opening for said cavity; said male fastening contour being joined to said female fastening contour by forcing said second surface of said male contour against said second surface of said female contour thereby bending said first cantilever portion and said second cantilever portion of said female contour to enlarge said opening of said cavity to enable said edge of said male contour to enter said cavity through said opening and said first and third surfaces of said female contour to clamp against said first and third surfaces of said male contour, respectively.
Claim 12
Dependent Claim
634 words
An improved pipe railing structure, comprising: a first half-cylindrical, hollow body member having first and second terminal edges parallel with a cylindrical axis; a first fastening member disposed along said first terminal edge of said body member, having a first fastening contour; a second fastening member disposed along said second terminal edge of said body member, having a second fastening contour; a first fastener anchorage member disposed along an inner surface of said body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; a second half-cylindrical, hollow body member having first and second terminal edges parallel with said cylindrical axis; a third fastening member disposed along said first terminal edge of said second body member, having a third fastening contour complementary to said first fastening contour of said first fastening member on said first body member; a fourth fastening member disposed along said second terminal edge of said second body member, having a fourth fastening contour complementary to said second fastening contour of said second fastening member on said first body member; a second fastener anchorage member disposed along an inner surface of said second body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; said first and third fastening members joining along their respective, complementary contours and said second and fourth fastening members joining along their respective, complmentary contours to thereby join said first and second body members to form a unitary, cylindrical pipe railing; said first fastening contour of said first fastening member and said second fastening contour of said second fastening member being a male fastening contour; said third fastening contour of said third fastening member and said fourth fastening contour of said fourth fastening member being a female fastening contour; said first and second terminal edges of said first body member defining a reference plane; said male fastening contour having a first planar surface approximately parallel with said reference plane, extending from said inner surface of said cylindrical body member from which it depends, a second planar surface intersecting said first planar surface at an acute angle forming an edge parallel with said axis, and a third planar surface intersecting said second planar surface at approximately a right angle and coincident with said terminal edge of said cylindrical body member from which it depends; said female fastening contour having a first cantilever portion extending from said inner surface of said cylindrical body member from which it depends and terminating in a segment approximately perpendicular to said reference plane, a second cantilever portion extending from said segment and terminating in a second planar surface approximately parallel with said second planar surface of said male fastening contour, said first cantilever portion, said inner surface from which it depends, and said second cantilever portion forming a cavity with said body member inner surface therein forming a third planar surface approximately parallel with said third planar surface of said male fastening contour and said second cantilever portion having an inwardly facing first planar surface approximately parallel with said first planar surface of said male contour member, said first and third planar surfaces of said female fastening contour terminating in an opening for said cavity; said male fastening contour being joined to said female fastening contour by forcing said second surface of said male contour against said second surface of said female contour thereby bending said first cantilever portion and said second cantilever portion of said female contour to enlarge said opening of said cavity to enable said edge of said male contour to enter said cavity through said opening and said first and third surfaces of said female contour to clamp against said first and third surfaces of said male contour, respectively.
Claim 13
Dependent Claim
634 words
An improved pipe railing structure, comprising: a first half-cylindrical, hollow body member having first and second terminal edges parallel with a cylindrical axis; a first fastening member disposed along said first terminal edge of said body member, having a first fastening contour; a second fastening member disposed along said second terminal edge of said body member, having a second fastening contour; a first fastener anchorage member disposed along an inner surface of said body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; a second half-cylindrical, hollow body member having first and second terminal edges parallel with said cylindrical axis; a third fastening member disposed along said first terminal edge of said second body member, having a third fastening contour complementary to said first fastening contour of said first fastening member on said first body member; a fourth fastening member disposed along said second terminal edge of said second body member, having a fourth fastening contour complementary to said second fastening contour of said second fastening member on said first body member; a second fastener anchorage member disposed along an inner surface of said second body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; said first and third fastening members joining along their respective, complementary contours and said second and fourth fastening members joining along their respective, complementary controus to thereby join said first and second body members to form a unitary, cylindrical pipe railing; said first fastening contour of said first fastening member and said fourth fastening contour of said fourth fastening member being a male fastening contour; said second fastening contour of said second fastening member and said third fastening contour of said third fastening member being a female fastening contour; said first and second terminal edges of said first body member defining a reference plane; said male fastening contour having a first planar surface approximately parallel with said reference plane, extending from said inner surface of said cylindrical body member from which it depends, a second planar surface intersecting said first planar surface at an acute angle forming an edge parallel with said axis, and a third planar surface intersecting said second planar surface at approximately a right angle and coincident with said terminal edge of said cylindrical body member from which it depends; said female fastening contour having a first cantilever portion extending from said inner surface of said cylindrical body member from which it depends and terminating in a segment approximately perpendicular to said reference plane, a second cantilever portion extending from said segment and terminating in a second planar surface approximately parallel with said second planar surface of said male fastening contour, said first cantilever portion, said inner surface from which it depends, and said second cantilever portion forming a cavity with said body member inner surface therein forming a third planar surface approximately parallel with said third planar surface of said male fastening contour and said second cantilever portion having an inwardly facing first planar surface approximately parallel with said first planar surface of said male contour member, said first and third planar surfaces of said female fastening contour terminating in an opening for said cavity; said male fastening contour being joined to said female fastening contour by forcing said second surface of said male contour against said second surface of said female contour thereby bending said first cantilever portion and said second cantilever portion of said female contour to enlarge said opening of said cavity to enable said edge of said male contour to enter said cavity through said opening and said first and third surfaces of said female contour to clamp against said first and third surfaces of said male contour, respectively.
Claim 14
Dependent Claim
634 words
An improved pipe railing structure, comprising: a first half-cylindrical, hollow body member having first and second terminal edges parallel with a cylindrical axis; a first fastening member disposed along said first terminal edge of said body member, having a first fastening contour; a second fastening member disposed along said second terminal edge of said body member, having a second fastening contour; a first fastener anchorage member disposed along an inner surface of said body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; a second half-cylindrical, hollow body member having first and second terminal edges parallel with said cylindrical axis; a third fastening member disposed along said first terminal edge of said second body member, having a third fastening contour complementary to said first fastening contour of said first fastening member on said first body member; a fourth fastening member disposed along said second terminal edge of said second body member, having a fourth fastening contour complementary to said second fastening contour of said second fastening member on said first body member; a second fastener anchorage member disposed along an inner surface of said second body member, having a longitudinal recess therein parallel with said axis, for receiving and anchoring a fastener in said axial direction; said first and third fastening members joining along their respective, complementary contours and said second and fourth fastening members joining along their respective, complementary controus to thereby join said first and second body members to form a unitary, cylindrical pipe railing; said first fastening contour of said first fastening member and said fourth fastening contour of said fourth fastening member being a male fastening contour; said second fastening contour of said second fastening member and said third fastening contour of said third fastening member being a female fastening contour; said first and second terminal edges of said first body member defining a reference plane; said male fastening contour having a first planar surface approximately parallel with said reference plane, extending from said inner surface of said cylindrical body member from which it depends, a second planar surface intersecting said first planar surface at an acute angle forming an edge parallel with said axis, and a third planar surface intersecting said second planar surface at approximately a right angle and coincident with said terminal edge of said cylindrical body member from which it depends; said female fastening contour having a first cantilever portion extending from said inner surface of said cylindrical body member from which it depends and terminating in a segment approximately perpendicular to said reference plane, a second cantilever portion extending from said segment and terminating in a second planar surface approximately parallel with said second planar surface of said male fastening contour, said first cantilever portion, said inner surface from which it depends, and said second cantilever portion forming a cavity with said body member inner surface therein forming a third planar surface approximately parallel with said third planar surface of said male fastening contour and said second cantilever portion having an inwardly facing first planar surface approximately parallel with said first planar surface of said male contour member, said first and third planar surfaces of said female fastening contour terminating in an opening for said cavity; said male fastening contour being joined to said female fastening contour by forcing said second surface of said male contour against said second surface of said female contour thereby bending said first cantilever portion and said second cantilever portion of said female contour to enlarge said opening of said cavity to enable said edge of said male contour to enter said cavity through said opening and said first and third surfaces of said female contour to clamp against said first and third surfaces of said male contour, respectively.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |