Patent US3934676A successfully refreshed from Google Patents.
US3934676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scaffold structure
Assignee: Individual
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Filing: 1974-09-23
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Granted: 1976-01-27
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Expires: 1994-09-23
Abstract
Abstract A scaffold structure comprising a pair of leg frames and a support frame. The support frame includes a pair of posts vertically slidably received in the leg frames and means for locking the same thereto at selected elevations. The support frame includes telescopically engaged members whereby it can be extended or contracted and locked to provide a support of different lengths.
Inventors
- 👤 Robert C. Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:19
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/28; E04G1/32
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
265 words
A scaffold structure comprising at least two rigid leg frames, each set of leg frames including a pair of spaced-apart legs and a top portion, upper collar elements each having an opening therethrough and being secured to said top portion with said openings extending vertically, a platform frame including a pair of parallel spaced-apart post members having cross-sections complementary to said collar openings whereby said posts are slidably, vertically received through said upper collars, respectively, a platform support including a pair of telescopically engaged platform members fixedly secured adjacent their distal ends to respective ones of the upper ends of said post members, post locking means for locking said posts in selected vertically displaced positions to said collar members with said platform members extending laterally between said leg frames in a plane generally perpendicular to the plane including said legs, support locking means for locking said support members in selected telescopically extended positions, a storage collar element fixedly secured to each of said leg frames, each said storage collar element having an opening therethrough, said openings having an axis disposed generally parallel to a plane including said legs, said storage collar openings being dimensioned to slidably receive said posts therethrough, the outer one of said platform members being open at both ends thereof, the inner one of said platform members being slidably receivable into either end thereof, whereby said leg frames can be vertically stacked in interlocking relationship upon one another, said platform support can be assembled with said posts in closely spaced-apart relationship with said posts being slidably received in said storage collar elements.
Claim 2
Dependent Claim
265 words
A scaffold structure comprising at least two rigid leg frames, each set of leg frames including a pair of spaced-apart legs and a top portion, upper collar elements each having an opening therethrough and being secured to said top portion with said openings extending vertically, a platform frame including a pair of parallel spaced-apart post members having cross-sections complementary to said collar openings whereby said posts are slidably, vertically received through said upper collars, respectively, a platform support including a pair of telescopically engaged platform members fixedly secured adjacent their distal ends to respective ones of the upper ends of said post members, post locking means for locking said posts in selected vertically displaced positions to said collar members with said platform members extending laterally between said leg frames in a plane generally perpendicular to the plane including said legs, support locking means for locking said support members in selected telescopically extended positions, a storage collar element fixedly secured to each of said leg frames, each said storage collar element having an opening therethrough, said openings having an axis disposed generally parallel to a plane including said legs, said storage collar openings being dimensioned to slidably receive said posts therethrough, the outer one of said platform members being open at both ends thereof, the inner one of said platform members being slidably receivable into either end thereof, whereby said leg frames can be vertically stacked in interlocking relationship upon one another, said platform support can be assembled with said posts in closely spaced-apart relationship with said posts being slidably received in said storage collar elements.
Claim 3
Dependent Claim
53 words
The structure of claim 1 wherein said support locking means includes a threaded opening through the outer one of said telescopically engaged platform members and a threaded element threadingly received therein, said threaded element frictionally engaging the inner one of said telescopically engaged platform members upon rotation thereof to thereby lock said members.
Claim 4
Dependent Claim
24 words
The structure of claim 1 wherein at least one of said storage collar elements includes locking means for locking one of said posts thereto.
Claim 5
Dependent Claim
73 words
The structure of claim 1 further including a brace fixedly secured between said leg portions of each said leg frame in vertically spaced-apart relationship to said top portion, a lower collar element having an opening therethrough secured to each of said braces with the opening thereof in axial alignment with the respective one of said openings of said upper collar elements, said lower collar element openings being dimensioned to receive said posts therein.
Claim 6
Dependent Claim
43 words
The structure of claim 4 wherein said upper and lower collar elements are tubular elements of rectangular cross-section, said posts having a rectangular cross-section dimension to be slidably received within said upper and lower collar elements, relative rotational movement therebetween being restrained thereby.
Claim 7
Dependent Claim
81 words
The structure of claim 4 wherein said post locking means includes a pair of holes formed in axial registry through opposite sides of one of said upper and lower collar members, a plurality of vertically spaced-apart holes through said posts in positions in registry with said collar holes at each vertically spaced-apart position of said platform frame, and a retaining pin having a length greater than the distance between said collar holes and a diameter dimensioned to be slidably received therein.
Claim 8
Dependent Claim
35 words
The structure of claim 6 wherein said retaining pins further include a spring clip having a U-shaped configuration and dimensioned to resiliently and lockingly engage said collar elements when said retaining pins are received therein.
Claim 9
Dependent Claim
40 words
The structure of claim 4 wherein said leg frames are formed of a single elongated member formed into an arch, said leg portions being the distal ends of said member, said top portion being the apex portion of said arch.
Claim 10
Dependent Claim
29 words
The structure of claim 8 wherein said posts are received through said upper and lower collar elements with said platform members disposed in a position above said top portions.
Claim 11
Dependent Claim
26 words
The structure of claim 8 wherein said posts are received through said upper and lower collar elements with said platform members disposed below said top portions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |