US4615412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder rest device
Assignee: Individual
•
Filing: 1984-05-18
•
Granted: 1986-10-07
•
Expires: 2004-05-18
Abstract
Abstract A ladder rest comprises interconnected yokes (12,13) which extend across the front or climbing side of an upper ladder section (8) and are mounted on rungs (18) of that ladder section by hooks (17). The yokes extend around the stiles (11) of the ladder and carry abutments (22) which engage a wall (24). The yokes are clear of the stiles of the ladder and of any guide furniture (10) on the lower ladder section, so as not to interfere with complete retraction of the ladder. The abutment portion (22) is below the level of the lower hook (17) at which load is applied from the ladder to the device to provide an advantageous geometry when the ladder is loaded and bows towards the wall.
Inventors
- 👤 James B. Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:42
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/48; E06C7/482
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
198 words
A device for use in resting an upper part of a ladder against a wall, the device comprising a frame which is provided with means for mounting the frame on at least one rung of the ladder at a position on the rung located between the ladder stiles, the frame having first parts extending away from one another, in use, transversely across respective ones of the ladder stiles on the front climbing side of the ladder and second parts extending rearwardly from the first parts, in use, at the sides of the ladder and carrying means for abutment with a wall; characterised in that the second parts of the frame are interconnected by a further part whereby, in use, the frame completely surrounds the ladder to which it is fitted, and the mounting means and first frame parts are so arranged that, in use, when the device is mounted a few rungs down from the top of an upper section of an extendible ladder at a position below guide furniture on a lower ladder section when the ladder is retracted, the frame can ride past the lower section and guide furniture upon extension and retraction of the ladder.
Claim 2
Independent Claim
198 words
A device for use in resting an upper part of a ladder against a wall, the device comprising a frame which is provided with means for mounting the frame on at least one rung of the ladder at a position on the rung located between the ladder stiles, the frame having first parts extending away from one another, in use, transversely across respective ones of the ladder stiles on the front climbing side of the ladder and second parts extending rearwardly from the first parts, in use, at the sides of the ladder and carrying means for abutment with a wall; characterised in that the second parts of the frame are interconnected by a further part whereby, in use, the frame completely surrounds the ladder to which it is fitted, and the mounting means and first frame parts are so arranged that, in use, when the device is mounted a few rungs down from the top of an upper section of an extendible ladder at a position below guide furniture on a lower ladder section when the ladder is retracted, the frame can ride past the lower section and guide furniture upon extension and retraction of the ladder.
Claim 3
Dependent Claim
26 words
A device according to claim 1 in which the second parts of the frame incorporate staging whereby, in use, a user may stand on the staging.
Claim 4
Dependent Claim
47 words
A device according to claim 1, in which the frame is arranged to be rigidly mounted on a ladder by means of mounting means in the form of two hooks which are fixed to the first frame parts and are engageable over different rungs of the ladder.
Claim 5
Dependent Claim
47 words
A device according to claim 3, in which the first and second frame parts comprise a pair of yokes which are arranged to extend across the front of the ladder, one above the other, and rearwardly where they are fixed together at the sides of the frame.
Claim 6
Dependent Claim
19 words
A device according to claim 4, in which the hooks are fixed to bars which interconnect the two yokes.
Claim 7
Dependent Claim
85 words
A device according to claim 1, in which at least the rearwardly projecting parts of the frame are pivotally mounted about a horizontal axis, in use, parallel to the rungs of a ladder on which the device is mounted, so that these parts may be folded towards the back of the ladder, and a tension member is connected to these parts and arranged to engage a part of the ladder above the device to restrain the pivotally mounted parts in their rearwardly projecting working position.
Claim 8
Dependent Claim
22 words
A device according to claim 1, in which the further part is indented to enable the frame to straddle a wall projection.
Claim 9
Dependent Claim
26 words
A device according to claim 1, in which the rearwardly projecting parts of the frame carry fixed frictional abutment means for working engagement with the wall.
Claim 10
Dependent Claim
26 words
A device according to claim 1, in which the rearwardly projecting parts of the frame carry wheel abutment means for running up and down the wall.
Claim 11
Dependent Claim
19 words
A device according to claim 8, in which the fixed frictional abutment means is above the wheel abutment means.
Claim 12
Dependent Claim
21 words
A device according to claim 10, in which the fixed frictional abutment means is engaged with the wall in normal use.
Claim 13
Dependent Claim
20 words
A device according to claim 10, in which the wheel abutment means is engaged with the wall in normal use.
Claim 14
Dependent Claim
95 words
A device according to claim 1, in which in normal use with the device fitted to a ladder which is under load and resting via the device at 15° to a vertical wall, the abutment means abuts the wall at a level below that at which the load of the ladder is applied to the device whereby, when the part of the ladder below the device flexes, in use, convexly towards the wall, the device rocks downwardly on the abutment means to increase the spacing of the adjacent part of the ladder from the wall.
Claim 15
Dependent Claim
49 words
A device according to claim 13, in which, as seen in side section, a line adjoining the lowest point of abutment with the wall and the point at which the load of the ladder is applied to the device is at substantially 90° to the length of the ladder.
Claim 16
Dependent Claim
18 words
An extendible ladder, the upper section of which is fitted with a device according to claim 1 .
References Cited (Backward Citations)
US960565A
Cited
US2597902A
Cited
FR1193183A
Cited
US3072218A
Cited
US4121692A
Cited
US4311207A
Cited
US4280590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-06 | 1990-04-07 | 1990-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-06 | 1994-04-07 | 1994-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-06 | 1998-04-07 | 1998-10-07 | $7700.00 | Window Closed / Lapsed |