Patent US4276957A successfully refreshed from Google Patents.
US4276957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable scaffold assembly with movable anchor
Assignee: Individual
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Filing: 1980-01-08
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Granted: 1981-07-07
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Expires: 2000-01-08
Abstract
Abstract An improvement in portable scaffold assemblies which enables a scaffold to be securely hung upon a vertical portion of the building, without the need for permanent anchoring means, either on the building or on the scaffolding frame itself. The portable scaffold assembly is preferably constructed of square tubing, with a main pair of open-ended vertically extending tubular members comprising the main structural member for a permanent walkway, and also for hanging an auxillary walkway, therebelow. The scaffold may be positioned, in a vertical sense, very close to the top of the vertical building portion which supports the assembly, or telescoped downwardly therefrom to any desired extent. This is allowed by a pair of L-shaped upper arms which telescopically engage both the main scaffold holder assembly, and also the removable L-shaped anchors, which are movably fitted against the vertical supports of the building structure.
Inventors
- 👤 H. Lee Kilgore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:06
CPC Classifications
E; E04; E04G; E04G3/00; E04G3/22; E04G5/00; E04G5/04; E04G5/046; E04G5/048
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
160 words
A portable scaffold assembly adapted to be engaged and supported upon a vertically extending portion of a building structure, said scaffold assembly comprising a pair of vertically extending, open-ended tubular members, each member having at least one horizontally extending walkway support for supporting a superposed walkway thereon, an upper arm which is adjustably fitted, at a proximate end, for a telescopic engagement within said tubular member, said each upper arm further comprising, at its distal end, a horizontally extending portion which is adjustably fitted to enter a first end and engage within a horizontally extending, open-ended tubular member which extends horizontally to a second end and comprises an anchor said anchor further comprising a vertically extending portion proximate said first end, and adapted to be adjustably and removably fit against a vertically extending first portion of a building structure, whereby each of said vertically extending scaffold tubular members will thereby engage the opposite side of said vertically extending structure portion.
Claim 2
Dependent Claim
160 words
A portable scaffold assembly adapted to be engaged and supported upon a vertically extending portion of a building structure, said scaffold assembly comprising a pair of vertically extending, open-ended tubular members, each member having at least one horizontally extending walkway support for supporting a superposed walkway thereon, an upper arm which is adjustably fitted, at a proximate end, for a telescopic engagement within said tubular member, said each upper arm further comprising, at its distal end, a horizontally extending portion which is adjustably fitted to enter a first end and engage within a horizontally extending, open-ended tubular member which extends horizontally to a second end and comprises an anchor said anchor further comprising a vertically extending portion proximate said first end, and adapted to be adjustably and removably fit against a vertically extending first portion of a building structure, whereby each of said vertically extending scaffold tubular members will thereby engage the opposite side of said vertically extending structure portion.
Claim 3
Dependent Claim
72 words
A portable scaffold assembly according to claim 1 further comprising an auxillary scaffold hanger assembly which is suspended below said walkway through a first vertically extending member which is hung from at least one horizontally extending walkway support, with a walkway being supported, by the bottom end of said hanging support, and a horizontal member which extends over to a connection with a portion of each of said vertically extending tubular members.
Claim 4
Dependent Claim
60 words
A portable scaffold assembly according to claim 1 wherein further said vertically extending tubular member comprises a steel tubing of square cross-section, and the telescoping adjustable fit of said each arm in each of said anchors and vertically extending tubular members further comprises pins which engage corresponding apertures in each of said anchors, upper arms, and vertical extending tubular members.
Claim 5
Dependent Claim
112 words
A portable scaffold assembly according to claim 1 wherein each of said upper arms further comprises a square tubing which fits within accepting square tubing comprising each of said anchor and vertically extending tubular members, wherein further the horizontal and vertically extending portions of each upper arm meet at a substantial right angle, so that the cooperation among said each tubular member, said each upper arm and said each anchor further comprises a J-shaped engagement with both vertical opposite sides of a building structure, and also a top portion of the building structure which is between the vertically extending portion of said anchor, and the vertically extending portion of said upper arm.
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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) | 1984-07-06 | 1985-01-05 | 1985-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-06 | 1989-01-05 | 1989-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-06 | 1993-01-05 | 1993-07-07 | $7700.00 | Window Closed / Lapsed |