Patent US564292A successfully refreshed from Google Patents.
Patent US3711059A successfully refreshed from Google Patents.
US3711059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Girdling system for concrete shuttering
Assignee: Individual
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Filing: 1971-01-22
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Granted: 1973-01-16
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Expires: 1991-01-22
Abstract
Abstract A bar unit, formed of longitudinal interconnected strips of spaced angled profiles, leaving a front longitudinal unobstructed slit, and a back slit, broken by cross straps but permitting manual access to the back of the bar unit, has braces, adapted to be secured to concrete form or mold boards attached thereto by brace clamps which contain screw-clamping elements, the clamp elements penetrating through the front slit to provide clamping pressure against the front faces of the profile. The profiles are interconnected, or connectable to further brace clamps, by means of inserted coupling bars, telescopically receivable in the bar unit, and held therein by coupling clamps utilizing counter plates pressing the coupling bars against the profiled faces of the strips of the bar unit, to form a rigid, interconnectable structure, which is longitudinally adjustable and on which the form braces can be placed, as desired, and in accordance with load requirements.
Inventors
- 👤 L Kistler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:52
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/36; E04G11/48; E04G11/50; E04G11/52; E04G1/00; E04G11/06; E04G11/08; E04G11/12; E04G17/00; E04G17/04; E04G17/042
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
247 words
Back up support system for concrete form boards (SH) comprising; at least one bar unit (L, Lu) including a pair of interconnected (1a) spaced angled profile strips (1st, 1u) leaving a longitudinal slit (1s) at one side thereof, said angled profile strips being formed to provide at least one bearing surface (1'''', 1''''u) parallel to the longitudinal extent of the strip, the slit being adapted to face the concrete form boards (SH); braces (ST) adapted to be secured to the concrete form boards (SH); brace clamps (TK) to clamp the braces (ST) to the bar units, said brace clamps comprising a base plate (2) having one side dimension capable of insertion into the slit (1s) of the bar unit (L, Lu) between said strips (1st, 1u) and having means (2c, 2d) to clamp the bearing surfaces (1'''', 1''''u) of the bar unit and said plate together; coupling bars (LK) telescopically receivable in the bar unit and at least partially insertable therein to lie against the inside of the strips; and coupling clamps (KK) comprising a pair of counter plates (4, 4b) and means (4a, 4c, 4d) to clamps said pair of plates towards each other, said plates being adapted to lie against a surface of said bar unit (L, Lu) and the surface of the coupling bar (LK) with the clamping means spanning said coupling bar and clamping the surfaces of said bars (L, Lu; LK) together to retain the coupling in position in the bar unit.
Claim 2
Dependent Claim
247 words
Back up support system for concrete form boards (SH) comprising; at least one bar unit (L, Lu) including a pair of interconnected (1a) spaced angled profile strips (1st, 1u) leaving a longitudinal slit (1s) at one side thereof, said angled profile strips being formed to provide at least one bearing surface (1'''', 1''''u) parallel to the longitudinal extent of the strip, the slit being adapted to face the concrete form boards (SH); braces (ST) adapted to be secured to the concrete form boards (SH); brace clamps (TK) to clamp the braces (ST) to the bar units, said brace clamps comprising a base plate (2) having one side dimension capable of insertion into the slit (1s) of the bar unit (L, Lu) between said strips (1st, 1u) and having means (2c, 2d) to clamp the bearing surfaces (1'''', 1''''u) of the bar unit and said plate together; coupling bars (LK) telescopically receivable in the bar unit and at least partially insertable therein to lie against the inside of the strips; and coupling clamps (KK) comprising a pair of counter plates (4, 4b) and means (4a, 4c, 4d) to clamps said pair of plates towards each other, said plates being adapted to lie against a surface of said bar unit (L, Lu) and the surface of the coupling bar (LK) with the clamping means spanning said coupling bar and clamping the surfaces of said bars (L, Lu; LK) together to retain the coupling in position in the bar unit.
Claim 3
Dependent Claim
53 words
Support system according to claim 1, wherein the brace clamp (TK) comprises a pair of brackets (2a) narrower than the width of the slit (1s) between the profiled strips (1st, 1u) and secured to the base plate (2); and clamping screws (2d) in screw connection with the brackets and forming said clamping means.
Claim 4
Dependent Claim
91 words
Support system according to claim 1, wherein the clamping bars (LK) comprise a pair of similar profiled elements (3) spaced from each other and interconnected at spaced location along their length, the space between said elements providing a sLit of a width substantially as wide as the slit (1s) between the profiled strips (1st, 1u), the outer dimension of said coupled profiled elements (3) being just slightly less than the inside dimension of said profiled strips (1st, 1u) of the bar unit (L, Lu) so as to be telescopically receivable therein.
Claim 5
Dependent Claim
19 words
Support system according to claim 3, wherein the profiled elements (3) are hollow extrusions of substantially rectangular cross section.
Claim 6
Dependent Claim
79 words
Support system according to claim 1, wherein the coupling clamps (KK) comprises a threaded anchor bolt (4a) interconnecting said counter plates (4, 4b), one of the plates (4b) being loose on the anchor and being formed with at least one stop engageable against the outside surface of one of the profiled strips (1st, 1u); the diameter of the anchor bolt and the width of the other coupling plate being substantially not greater than the width of the slit (1s).
Claim 7
Dependent Claim
106 words
Support system according to claim 1, wherein the system further comprises blind coupling (BL) for clamping the coupling bars (LK) to the bar unit (L, Lu); each blind coupling (BL) comprising a spacer plate (5); a threaded anchor bolt (5a) secured to the spacer plate (5), a counter plate (5b) loose on the bolt, and threaded means (5c) on the bolt to bear against the counter plate; the thickness of the spacer plate corresponding essentially to the thickness of the base plate (2) of the bar clamps (TK) and the diameter of the anchor bolt (5a) being not more than the width of the slit (1s).
Claim 8
Dependent Claim
105 words
Support system according to claim 1, wherein the system further comprises coupling bar clamps (KTK), to clamp the braces (ST) to the coupling bars (LK), said coupling bar clamps (KTK) comprising a coupling bar base plate (6); a bracket (6a) secured to the base plate; a spacer plate (6c) and screw means (6a'', 6b) interconnecting the spacer plate (6c) and the coupling bar base plate (6); the thickness of the spacer plate (6c) being essentially equal to the thickness of the portion of the strip (1st, 1u) having said bearing surface (1'''',1''''u) plus the thickness of the base plate (2) of the brace clamp (TK).
Claim 9
Dependent Claim
105 words
Support system according to claim 1, wherein the system further comprises double brace clamps (DTK) to clamp the ends of adjacent braces (ST1, ST2) to the bar unit (L, Lu), said double brace clamps comprising a double base plate (7); a pair of brackets (7a) secured to the double base plate and a pair of clamping screws (7b) connected to each of the brackets; the width of the brackets (7a) being less than the width of the slit (1s) and the thickness of the double base plate (7) being essentially the same as the thickness of the base plate (2) of the brace clamp (TK).
Claim 10
Dependent Claim
102 words
Support system according to claim 1, wherein the system further comprises side corner clamps (STK) to clamp two adjacently located braces (ST) to a bar unit (L, Lu), said side carrier clamps comprising a side carrier clamp base plate (8); a bracket (8a) secured to the side of the clamp plate and clamping means (8d) on said bracket, the width of the bracket (8a) being substantially not more than the width of the slit (1s) and the thickness of the side clamp base plate (8) being essentially the same as the thickness of said base plate (2) of the brace clamp (TK).
Claim 11
Dependent Claim
72 words
Support system according to claim 1, wherein the system further comprises inner edge corner coupling means (ELK) having an angled coupling bar forming an inner corner, the legs (9) of the coupling bar forming the corner being of essentially the same cross section and size as the coupling bars (LK) for telescopic insertion into the bar units (L, Lu) at ends of the bar units and where angles aRe to be placed.
Claim 12
Dependent Claim
47 words
Support system according to claim 1, wherein the system further comprises outer edge coupling means (EL) being formed of angled forming bars (10) defining an outer right angle, said bars being shaped to provide an inner cross-sectional area capable of telescopically receiving said coupling bars (LK) therein.
Claim 13
Dependent Claim
86 words
Support system according to claim 1, wherein the profiled strips comprise a pair of profiled extrusions (1st, 1u) forming said strips, and having flanges (1'''', 1''''u) facing each other and defining therebetween said slit (1s), said extrusions being open at the side opposite said slit; and interconnecting straps (1a) connecting said extrusions to interconnect said profiled extrusion strips into a bar unit, the space between said extrusions at the side of said straps (1a) being sufficient to provide access to the interior of said bar unit.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |