US4339020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder support
Assignee: Individual
•
Filing: 1980-10-23
•
Granted: 1982-07-13
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Expires: 2000-10-23
Abstract
Abstract A ladder support which is attached to the top portion of ladder rails, the support having a large bearing surface which is covered with soft fabric and being adapted to fit ladders of various sizes and made of various materials.
Inventors
- 👤 Donald H. Wiseman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:11
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
231 words
A ladder support comprising: a plate, one side of which is covered with a soft fabric; a first L-shaped bar the horizontal leg of which is attached to the plate; a flat bar, one end of which is attached to the top surface of the horizontal leg of the first L-shaped bar and having a pair of feet on the other end, the feet being attached to the plate and displaced with respect to the bottom surface of the flat bar so that a pocket is formed between the bar and the plate; a second L-shaped bar, the horizontal leg of which is inserted in the pocket, and which is slidably attached to the plate; a first column, the bottom end of which is pivotably attached to the vertical leg of the first L-shaped bar; a first U-bracket which is attached to the upper portion of the first column; a second column, the bottom end of which is pivotably attached to the vertical leg of the second L-shaped bar; a second U-bracket which is attached to the upper portion of the second column; first and second clamp screws which are threaded through the first and second columns respectively and may be advanced into the space circumscribed by the first and second U-brackets; and adjustable pipe means connected between the columns for maintaining the position of the columns relative to each other.
Claim 2
Dependent Claim
231 words
A ladder support comprising: a plate, one side of which is covered with a soft fabric; a first L-shaped bar the horizontal leg of which is attached to the plate; a flat bar, one end of which is attached to the top surface of the horizontal leg of the first L-shaped bar and having a pair of feet on the other end, the feet being attached to the plate and displaced with respect to the bottom surface of the flat bar so that a pocket is formed between the bar and the plate; a second L-shaped bar, the horizontal leg of which is inserted in the pocket, and which is slidably attached to the plate; a first column, the bottom end of which is pivotably attached to the vertical leg of the first L-shaped bar; a first U-bracket which is attached to the upper portion of the first column; a second column, the bottom end of which is pivotably attached to the vertical leg of the second L-shaped bar; a second U-bracket which is attached to the upper portion of the second column; first and second clamp screws which are threaded through the first and second columns respectively and may be advanced into the space circumscribed by the first and second U-brackets; and adjustable pipe means connected between the columns for maintaining the position of the columns relative to each other.
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) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |