Patent US1520004A successfully refreshed from Google Patents.
US4031981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable work platform
Assignee: LITTLE GIANT IND Inc
•
Filing: 1976-06-01
•
Granted: 1977-06-28
•
Expires: 1996-06-01
Abstract
Abstract An improved foldable work stand and platform having an upper work support surface with wooden inserts therein to protect saws and the like from being damaged by accidental contact with the metal structure of the platform. The foldable work platform also includes improved structure for elevating the working surface and an adjustable stabilizer leg to maintain the work surface generally horizontal on uneven terrain. Lateral extensions of the work surface provide versatility in the work surface configuration and are easily secured in a selected orientation.
Inventors
- 👤 Edward Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:51
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/34
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
120 words
A foldable work platform comprising in combination: a base comprising two upright, hollow legs rigidly interconnected by a cross piece and a support stand rotatably attached to the cross piece for selectively giving stability to the base when in upright position; a scaffold adjustably cooperating with the base and comprising two downwardly depending hollow members rigidly interconnected by an open cross channel, each member being telescopically received by a leg, and means for securing each leg and hollow member together; an arm configurated as an open U-shaped channel rotatably and extensibly carried upon the scaffold at at least one end thereof; and wooden inserts nested within the cross channel and arms, the inserts extending above the sides of the channels.
Claim 2
Dependent Claim
120 words
A foldable work platform comprising in combination: a base comprising two upright, hollow legs rigidly interconnected by a cross piece and a support stand rotatably attached to the cross piece for selectively giving stability to the base when in upright position; a scaffold adjustably cooperating with the base and comprising two downwardly depending hollow members rigidly interconnected by an open cross channel, each member being telescopically received by a leg, and means for securing each leg and hollow member together; an arm configurated as an open U-shaped channel rotatably and extensibly carried upon the scaffold at at least one end thereof; and wooden inserts nested within the cross channel and arms, the inserts extending above the sides of the channels.
Claim 3
Dependent Claim
25 words
A foldable work platform as defined in claim 1 wherein said support stand is vertically extensible to give stability to the base on uneven terrain.
Claim 4
Dependent Claim
20 words
A foldable work platform as defined in claim 1 wherein said wooden inserts are removably mounted upon the cross channel.
Claim 5
Dependent Claim
19 words
A foldable work platform as defined in claim 1 wherein said wooden inserts are removably mounted upon the arm.
Claim 6
Dependent Claim
30 words
A foldable work platform as defined in claim 1 wherein said means for securing each leg and hollow members together comprises means for positively interlocking the leg and hollow member.
Claim 7
Dependent Claim
38 words
A foldable work platform as defined in claim 1 wherein said scaffold comprises laterally extending support means for receiving the arms in nesting relationship in at least two orientations in which lateral displacement of the arm is limited.
References Cited (Backward Citations)
US1159299A
Cited
US1450869A
Cited
US1659113A
Cited
GB327045A
Cited
US2572928A
Cited
US3934676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |