US4917217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable folding staging
Assignee: Stageright Corp
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Filing: 1989-01-23
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Granted: 1990-04-17
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Expires: 2009-01-23
Abstract
Abstract A stage panel support assembly including four corner stanchions or posts permanently cross braced in one transverse direction and connected in a longitudinal direction by double jointed arms centrally pivoted at an apex on a base frame upright. A cross brace joins respective arms at points spaced from the apex. The corner stanchions are movable from a storage position above the base frame to the operative position spaced from the base and in a vertical position relative to a supporting surface. Projections at the top of the stanchions cooperate with removable horizontal panels which further stabilize the structure in operative position.
Inventors
- 👤 Orley D. Rogers
- 👤 Kenneth E. Staten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:11
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/34; E04H; E04H3/00; E04H3/10; E04H3/22; E04H3/24; E04H3/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
260 words
A stage panel support for portable staging comprising: (a) a relatively narrow base frame, (b) roll away casters on said frame, (c) four vertical stanchions for supporting four corners of a square or rectangular stage panel, and (d) a plurality of collapsible braces mounted at one end on said base frame and at the other end to said stanchions to move said stanchions from a storage position above said base frame to a support position spaced from said base frame to engage corners of said stage panel, said base frame comprising a horizontal frame, and spaced uprights at each end of said frame, (e) said collapsible braces including upper and lower braces on each side of said base frame secured to an upright of said base frame at a localized pivot area above said base frame and secured to said stanchions at upper and lower spaced pivot points adjacent the top end and the lower end of said stanchions, (f) said collapsible braces including collapsible upper braces with a long brace pivoted to the base upright and a shorter brace pivoted to said upper longer brace and to stanchions at one side adjacent the upper end, and collapsible lower braces with a long brace pivoted to stanchions at the other side adjacent the lower end and a shorter brace pivoted to said lower longer brace and to said base upright, whereby in a support position said upper and lower braces form triangular supports with two diverging sides connected to the stanchions and the apex connected to a base support upright.
Claim 2
Dependent Claim
260 words
A stage panel support for portable staging comprising: (a) a relatively narrow base frame, (b) roll away casters on said frame, (c) four vertical stanchions for supporting four corners of a square or rectangular stage panel, and (d) a plurality of collapsible braces mounted at one end on said base frame and at the other end to said stanchions to move said stanchions from a storage position above said base frame to a support position spaced from said base frame to engage corners of said stage panel, said base frame comprising a horizontal frame, and spaced uprights at each end of said frame, (e) said collapsible braces including upper and lower braces on each side of said base frame secured to an upright of said base frame at a localized pivot area above said base frame and secured to said stanchions at upper and lower spaced pivot points adjacent the top end and the lower end of said stanchions, (f) said collapsible braces including collapsible upper braces with a long brace pivoted to the base upright and a shorter brace pivoted to said upper longer brace and to stanchions at one side adjacent the upper end, and collapsible lower braces with a long brace pivoted to stanchions at the other side adjacent the lower end and a shorter brace pivoted to said lower longer brace and to said base upright, whereby in a support position said upper and lower braces form triangular supports with two diverging sides connected to the stanchions and the apex connected to a base support upright.
Claim 3
Dependent Claim
42 words
A stage panel support as defined in claim 1 in which a short spacer link is pivotally interposed between the longer lower braces and the lower end of the stanchions to space the stanchion in a nested position on the base frame.
Claim 4
Dependent Claim
42 words
A stage panel support as defined in claim 1 in which a kick brace pivotally connects to the upper longer brace and the shorter lower brace to assist in the collapsing of said braces from a support position to a storage position.
Claim 5
Dependent Claim
192 words
A stage panel support for portable staging comprising: (a) a relatively narrow base frame, (b) roll away casters on said frame, (c) four vertical stanchions for supporting four corners of a square or rectangular stage panel, and (d) a plurality of collapsible braces mounted at one end on said base frame and at the other end to said stanchions to move said stanchions from a storage position above said base frame to a support position spaced from said base frame to engage corners of said stage panel, said base frame comprising a horizontal frame, and single spaced vertical uprights at each end of said frame, (e) said collapsible braces including upper and lower braces on each side of said base frame secured to an upright of said base frame at a localized pivot area above said base frame and secured to said stanchions at upper and lower spaced pivot points adjacent the top end and the lower end of said stanchions, and whereby in a support position said upper and lower braces form triangular supports with two diverging sides connected to the stanchions and the apex connected to a base support upright.
Claim 6
Dependent Claim
192 words
A stage panel support for portable staging comprising: (a) a relatively narrow base frame, (b) roll away casters on said frame, (c) four vertical stanchions for supporting four corners of a square or rectangular stage panel, and (d) a plurality of collapsible braces mounted at one end on said base frame and at the other end to said stanchions to move said stanchions from a storage position above said base frame to a support position spaced from said base frame to engage corners of said stage panel, said base frame comprising a horizontal frame, and single spaced vertical uprights at each end of said frame, (e) said collapsible braces including upper and lower braces on each side of said base frame secured to an upright of said base frame at a localized pivot area above said base frame and secured to said stanchions at upper and lower spaced pivot points adjacent the top end and the lower end of said stanchions, and whereby in a support position said upper and lower braces form triangular supports with two diverging sides connected to the stanchions and the apex connected to a base support upright.
References Cited (Backward Citations)
US2669117A
Cited
US2978754A
Cited
US3199518A
Cited
US3212605A
Cited
US3354596A
Cited
US4638604A
Cited
US4779542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-16 | 1993-10-16 | 1994-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-16 | 1997-10-16 | 1998-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-16 | 2001-10-16 | 2002-04-17 | $7700.00 | Window Closed / Lapsed |