US3816009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch fastener
Assignee: Dzus Fastener Co Inc
•
Filing: 1972-05-01
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Granted: 1974-06-11
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Expires: 1992-05-01
Abstract
Abstract An adjustable latch fastener adapted to be mounted on a telescopic arrangement of members with openings therein to fix the relative position of said members. The fastener includes a latch bracket which has a base portion and a gripping portion. A bolt assembly is connected to the latch bracket in a manner which permits movement of the bracket to a predetermined degree rotationally, longitudinally and pivotally with respect to its point of attachment. The bolt assembly includes a stud and a receptacle member with one of the stud and receptacle members having a spiral cam surface thereon and the other of the stud and receptacle member having a projection mounted thereon so that when the stud and receptacle member are rotated with respect to one another to a predetermined degree, assembly and disassembly of the bolt assembly will occur. In this manner, the latch fastener is adapted to be quickly and efficiently mounted to and removed from the telescopic arrangement of members. An index pin is mounted on the bracket for insertion into a pair of aligned openings in the members so that the fastener may be shifted to permit the members to be altered to a different telescopic position wherein they may be re-engaged with a new set of aligned holes.
Inventors
- 👤 P Schenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:05
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/10; F16B7/105; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/32442; Y10T403/32451; Y10T403/32459; Y10T403/59; Y10T403/599; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7088
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
486 words
An adjustable latch fastener adapted to be mounted on telescoping members each with spaced aligned openings therein to fix the relative position of said members comprising: a latch bracket adapted to be mounted on the members; the latch bracket having a gripping portion and a base portion; the base portion of the latch bracket having an elongated slot in one end thereof and a hole in the other end thereof; a bolt assembly adapted to pass through the slot in the latch bracket and an opening in the base of the exterior one of said telescoping members and removably engaged with the base of the exterior member to fasten the latch bracket to the exterior member while permitting the latch bracket to reciprocate along said exterior member a distance defined by the slot; a spring around the bolt assembly and within the latch bracket and normally tending to retain the latch bracket in fixed position against the exterior member; sAid bolt assembly including a stud having a body and a flanged head portion with the body extending through said opening in the base of the exterior member and the slot in the latch bracket with the undersurface of the flanged head bearing against the undersurface of the exterior member, and a receptacle member having a hollow cylindrical portion to receive the forward portion of the body of the stud therein, and one of the stud and the hollow cylindrical portion having a spiral cam surface thereon and the other of the stud and the hollow cylindrical portion having a projection thereon for interengagement with the cam surface to readily facilitate the assembly and disassembly of said latch fastener with respect to said telescopic arrangement of members; an index pin mounted in the hole in the base and extended therethrough to normally pass through said spaced aligned openings in the telescoping members so as to retain the latch bracket in fixed position with respect to the members and to retain the members in relative fixed position; and said latch bracket adapted to be shifted from the normal position by lifting the other end of the base away from contact with the exterior member and compressing the spring until the index pin is removed from extended position through the openings in the members thereby permitting the telescoping members to slide with respect to one another to an alternate position, and thereafter the latch bracket being adapted to be moved both rotationally and longitudinally along the slot to bring the index pin into alignment with a desired set of openings in the members in the alternate position whereby release of the latch bracket will permit the index pin to extend into the openings and said spring and bolt assembly to return to the normal position retaining the latch bracket in fixed position with respect to said telescopic arrangement of members and fixing the alternate relative position of said members.
Claim 2
Dependent Claim
486 words
An adjustable latch fastener adapted to be mounted on telescoping members each with spaced aligned openings therein to fix the relative position of said members comprising: a latch bracket adapted to be mounted on the members; the latch bracket having a gripping portion and a base portion; the base portion of the latch bracket having an elongated slot in one end thereof and a hole in the other end thereof; a bolt assembly adapted to pass through the slot in the latch bracket and an opening in the base of the exterior one of said telescoping members and removably engaged with the base of the exterior member to fasten the latch bracket to the exterior member while permitting the latch bracket to reciprocate along said exterior member a distance defined by the slot; a spring around the bolt assembly and within the latch bracket and normally tending to retain the latch bracket in fixed position against the exterior member; sAid bolt assembly including a stud having a body and a flanged head portion with the body extending through said opening in the base of the exterior member and the slot in the latch bracket with the undersurface of the flanged head bearing against the undersurface of the exterior member, and a receptacle member having a hollow cylindrical portion to receive the forward portion of the body of the stud therein, and one of the stud and the hollow cylindrical portion having a spiral cam surface thereon and the other of the stud and the hollow cylindrical portion having a projection thereon for interengagement with the cam surface to readily facilitate the assembly and disassembly of said latch fastener with respect to said telescopic arrangement of members; an index pin mounted in the hole in the base and extended therethrough to normally pass through said spaced aligned openings in the telescoping members so as to retain the latch bracket in fixed position with respect to the members and to retain the members in relative fixed position; and said latch bracket adapted to be shifted from the normal position by lifting the other end of the base away from contact with the exterior member and compressing the spring until the index pin is removed from extended position through the openings in the members thereby permitting the telescoping members to slide with respect to one another to an alternate position, and thereafter the latch bracket being adapted to be moved both rotationally and longitudinally along the slot to bring the index pin into alignment with a desired set of openings in the members in the alternate position whereby release of the latch bracket will permit the index pin to extend into the openings and said spring and bolt assembly to return to the normal position retaining the latch bracket in fixed position with respect to said telescopic arrangement of members and fixing the alternate relative position of said members.
Claim 3
Dependent Claim
43 words
The invention in accordance with claim 1 wherein the forward end portion of the body of the stud has a spiral cam surface thereon and the projection is mounted in the hollow cylindrical portion to engage with the cam slot in the stud.
Claim 4
Dependent Claim
46 words
The invention in accordance with claim 2 wherein there are two diametrically opposed projections mounted in the hollow cylindrical portion and two corresponding diametrically opposed spiral cam surfaces on the body of the stud positioned so that each projection engages with a corresponding spiral cam surface.
Claim 5
Dependent Claim
48 words
The invention in accordance with claim 1 wherein one quarter of a revolution in one direction is sufficient to completely engage the stud and the receptacle member and one quarter of a revolution in the opposite direction is required to completely disengage the receptacle member from the stud.
Claim 6
Dependent Claim
101 words
The invention in accordance with claim 1 wherein the rear end portion of the receptacle contains an annular shoulder, the spring being a helical spring with one end bearing against the base of the latch bracket and the other end bearing against the undersurface of the annular shoulder on the receptacle of the bolt assembly so that when the bolt assembly is rotated to position the projection fully in the cam surface the spring will be compressed to thereby tend to retain the latch bracket and index pin in fixed engagement with the members and the members in relative fixed position.
Claim 7
Dependent Claim
75 words
The invention in accordance with claim 1 wherein the latch fastener is adapted to be mounted on a telescopic arrangement of two members with one member being slidable within the other, each member having two parallel rows of aligned openings extending longitudinally along said members with the latch fastener being shiftable into a position whereby the index pin is aligned with aligned openings in either row depending upon the relative position of the telescopic members.
Claim 8
Dependent Claim
56 words
The invention in accordance with claim 1 wherein the latch bracket includes a rectangular shaped base portion containing the slot and the hole therein and a pair of perpendicular extending side walls in substantial parallel relation to form gripping surfaces for facilitating the arrangement of the latch bracket with respect to the telescopic arrangement of members.
Claim 9
Dependent Claim
67 words
The invention in accordance with claim 1 wherein the index pin includes a cylindrical body portion for extension through the hole in the latch bracket and a pair of aligned openings in the members and a flanged head portion for engagement with the surface of the base of the latch bracket distal from the exterior member so that only the body portion extends through the hole therein.
Claim 10
Dependent Claim
39 words
The invention in accordance with claim 1 wherein the openings in said members are arranged in respect to the latch bracket so that the members may be telescopically shifted in small increments of distance with respect to one another.
References Cited (Backward Citations)
US2155738A
Cited
US2976824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |