Patent US4502566A successfully refreshed from Google Patents.
US4502566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall stand-off apparatus
Assignee: LITTLE GIANT INDUSTRIES Inc A CORP OF UT
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Filing: 1983-03-28
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Granted: 1985-03-05
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Expires: 2003-03-28
Abstract
Abstract A wall stand-off apparatus and method for supporting virtually any ladder adjacent to a substantially vertical surface. The novel wall stand-off apparatus of the present invention comprises a U-shaped support bar which forms two, substantially parallel legs. Each leg is provided with an extension member, such that the legs are individually adjustable in length. Two clamps are pivotally connected to the support bar. Each clamp comprises two movable, opposing jaws which are adapted to be attached to a portion of the ladder which is inserted therebetween. Each clamp includes a thumbscrew such that when a ladder's side rail or rung is inserted into the clamp, the thumbscrew may be tightened so as to firmly secure the clamp to the ladder. With both clamps properly secured to either the side rails or a rung of a ladder, the ladder may thereafter be leaned against a substantially vertical wall, with the legs of the support bar resting against the wall. The length of each leg may then be adjusted, as needed, by using the above-mentioned leg extension members.
Inventors
- 👤 Harold R. Wing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:44
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/48; E06C7/484
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
83 words
A wall stand-off apparatus for supporting a ladder adjacent to a substantially vertical surface, said ladder having a pair of side rails for supporting a plurality of ladder rungs therebetween, and said apparatus comprising: first means for supporting said ladder at a spaced distance from said surface; and second means, connected to said first means, for removably clamping said first means to said ladder; said second means being capable of selective clamping either to one of said ladder rungs or said side rails.
Claim 2
Dependent Claim
83 words
A wall stand-off apparatus for supporting a ladder adjacent to a substantially vertical surface, said ladder having a pair of side rails for supporting a plurality of ladder rungs therebetween, and said apparatus comprising: first means for supporting said ladder at a spaced distance from said surface; and second means, connected to said first means, for removably clamping said first means to said ladder; said second means being capable of selective clamping either to one of said ladder rungs or said side rails.
Claim 3
Dependent Claim
33 words
An apparatus as defined in claim 1 wherein said first means comprises: means for adjusting the width thereof; and means for adjusting said distance at which said ladder is spaced from said surface.
Claim 4
Dependent Claim
18 words
An apparatus as defined in claim 1 wherein said second means is pivotally mounted to said first means.
Claim 5
Dependent Claim
27 words
An apparatus as defined in claim 1 wherein said second means comprises means for adjusting the position where said second means is connected to said first means.
Claim 6
Dependent Claim
42 words
An apparatus as defined in claim 1 wherein said first means comprises a support member formed from two sections, each said section having a leg which extends therefrom so as to engage said surface, said sections being telescopically attached to one another.
Claim 7
Dependent Claim
34 words
An apparatus as defined in claim 5 wherein each said leg comprises an extensible member which may be adjusted for purposes of adjusting the distance at which said ladder is spaced from said surface.
Claim 8
Dependent Claim
31 words
An apparatus as defined in claim 5 wherein said second means comprises a pair of clamps, each said clamp being pivotally mounted to one of said sections of said support member.
Claim 9
Dependent Claim
41 words
An apparatus as defined in claim 7 wherein each said clamp comprises: a pair of opposing jaws; and means for securing selectively each said pair of opposing jaws to one of said ladder rungs or said side rails of said ladder.
Claim 10
Dependent Claim
26 words
An apparatus as defined in claim 7 wherein each said clamp comprises means for adjusting the position on said sections where each said clamp is mounted.
Claim 11
Dependent Claim
111 words
A wall stand-off apparatus for supporting a ladder adjacent to a substantially vertical surface, said ladder having a pair of side rails for supporting a plurality of ladder rungs therebetween, and said apparatus comprising: first means for supporting said ladder at a spaced distance from said surface, said first means comprising (a) means for adjusting the width thereof, and (b) means for adjusting said distance at which said ladder is spaced from said surface; and second means, pivotally mounted to said first means, for removably clamping said first means to said ladder; said second means being capable of selective clamping either to one of said ladder rungs or said side rails.
Claim 12
Dependent Claim
111 words
A wall stand-off apparatus for supporting a ladder adjacent to a substantially vertical surface, said ladder having a pair of side rails for supporting a plurality of ladder rungs therebetween, and said apparatus comprising: first means for supporting said ladder at a spaced distance from said surface, said first means comprising (a) means for adjusting the width thereof, and (b) means for adjusting said distance at which said ladder is spaced from said surface; and second means, pivotally mounted to said first means, for removably clamping said first means to said ladder; said second means being capable of selective clamping either to one of said ladder rungs or said side rails.
Claim 13
Dependent Claim
29 words
An apparatus as defined in claim 10 wherein said second means comprises means for adjusting the position at which said second means is pivotally mounted to said first means.
Claim 14
Dependent Claim
46 words
An apparatus as defined in claim 10 wherein said first means comprises a support member having a pair of sections, each said section having a leg which extends therefrom for engaging said surface so as to support said ladder at said spaced distance from said surface.
Claim 15
Dependent Claim
47 words
An apparatus as defined in claim 12 wherein said means for adjusting the width comprises means for telescopically engaging said sections one to another in a sliding fashion so that the width of said support member can be adjusted by sliding said sections relative to one another.
Claim 16
Dependent Claim
62 words
An apparatus as defined in claim 12 wherein said means for adjusting said distance at which said ladder is spaced from said surface comprises an extension member telescopically engaged to each said leg of said section, each said extension member being separately adjustable so as to be able to separately vary the distance at which said ladder is spaced from said surface.
Claim 17
Dependent Claim
89 words
An apparatus as defined in claim 12 wherein said second means comprises a pair of clamps, each said clamp comprising: a clamp base connected to one of said sections of said support member; a rigid clamp body pivotally connected to said clamp base; two opposing jaws which are pivotally connected to said clamp body, said jaws being adapted to be attached selectively to one of said ladder rungs or said side rails; and means for securing said jaws selectively to one of said ladder rungs or said side rails.
Claim 18
Dependent Claim
32 words
An apparatus as defined in claim 15 wherein each said clamp further comprises means for adjusting the position at which said clamp base is connected to said section of said support member.
Claim 19
Dependent Claim
107 words
A wall stand-off apparatus for supporting a ladder adjacent to a substantially vertical surface, said ladder having a pair of side rails for supporting a plurality of ladder rungs therebetween, the apparatus comprising: two adjustable clamps capable of selective clamping either to one of said ladder rungs or said side rails, each said clamp comprising: two opposing jaws which are adapted to be attached to a portion of said ladder; and means for securing said portion of the ladder between said jaws; and a support member connected to said clamps such that when said clamps are attached to said ladder the support member extends from the ladder.
Claim 20
Dependent Claim
107 words
A wall stand-off apparatus for supporting a ladder adjacent to a substantially vertical surface, said ladder having a pair of side rails for supporting a plurality of ladder rungs therebetween, the apparatus comprising: two adjustable clamps capable of selective clamping either to one of said ladder rungs or said side rails, each said clamp comprising: two opposing jaws which are adapted to be attached to a portion of said ladder; and means for securing said portion of the ladder between said jaws; and a support member connected to said clamps such that when said clamps are attached to said ladder the support member extends from the ladder.
Claim 21
Dependent Claim
58 words
A wall stand-off apparatus as defined in claim 17 wherein each said clamp further comprises a clamp body and a clamp base and wherein the jaws of said clamps are connected to the clamp body, said clamp body being pivotally mounted on the clamp base, and said support member being connected to the clamp base of each clamp.
Claim 22
Dependent Claim
20 words
A wall stand-off apparatus as defined in claim 17 wherein said securing means of the clamps comprises a thumb screw.
Claim 23
Dependent Claim
27 words
A wall stand-off apparatus as defined in claim 17 wherein said support member has two extensible legs which are adjustable in a direction toward said vertical surface.
Claim 24
Dependent Claim
28 words
A wall stand-off apparatus as defined in claim 17 wherein said support member is substantially U-shaped so as to form two legs which extend towards said vertical surface.
Claim 25
Dependent Claim
129 words
A wall stand-off apparatus for supporting an inclined ladder adjacent a substantially vertical wall, the apparatus comprising: two clamps, each such clamp comprising: a rigid clamp body; two, opposing jaws which are pivotally connected to the clamp body, said jaws being adapted to simultaneously hook around a portion of the ladder which is inserted therebetween; a securing means for securing said portion of the ladder between the jaws; and a clamp base rotatably connected to the clamp body; and a support member having two legs, said support member being connected to the clamp base of each clamp such that, when the clamps are connected to a ladder which is inclined toward said wall, said legs extend from the ladder to the wall, thereby supporting the ladder adjacent the wall.
Claim 26
Dependent Claim
129 words
A wall stand-off apparatus for supporting an inclined ladder adjacent a substantially vertical wall, the apparatus comprising: two clamps, each such clamp comprising: a rigid clamp body; two, opposing jaws which are pivotally connected to the clamp body, said jaws being adapted to simultaneously hook around a portion of the ladder which is inserted therebetween; a securing means for securing said portion of the ladder between the jaws; and a clamp base rotatably connected to the clamp body; and a support member having two legs, said support member being connected to the clamp base of each clamp such that, when the clamps are connected to a ladder which is inclined toward said wall, said legs extend from the ladder to the wall, thereby supporting the ladder adjacent the wall.
Claim 27
Dependent Claim
29 words
A wall stand-off apparatus as defined in claim 22 wherein the securing means comprises a thumb screw threadably extending through said clamp body in a direction toward said jaws.
Claim 28
Dependent Claim
22 words
A wall stand-off apparatus as defined in claim 22 wherein said portion of the ladder is a side rail of the ladder.
Claim 29
Dependent Claim
21 words
A wall stand-off apparatus as defined in claim 22 wherein said portion of the ladder is a rung of the ladder.
Claim 30
Dependent Claim
24 words
A wall stand-off apparatus as defined in claim 22 wherein said clamps further comprise a clamp base which is formed as an inverted U-channel.
Claim 31
Dependent Claim
63 words
A wall stand-off apparatus as defined in claim 26 wherein the clamp body has a hole therein and the clamp base has an upstanding tube thereon and wherein the hole in the clamp body is placed over the upstanding tube on the clamp base, with the upstanding tube being thereafter flared such that the clamp body is rotatably mounted on the clamp base.
Claim 32
Dependent Claim
32 words
A wall stand-off apparatus as defined in claim 22 wherein said support member is an elongated tube-like structure having a U-shaped configuration, the ends of the support member forming the two legs.
Claim 33
Dependent Claim
21 words
A wall stand-off apparatus as defined in claim 28 wherein the support member comprises two sections, each section having one leg.
References Cited (Backward Citations)
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US1579136A
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US2327317A
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US2903086A
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US3288249A
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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) | 1988-03-04 | 1988-09-03 | 1989-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-04 | 1992-09-03 | 1993-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-04 | 1996-09-03 | 1997-03-05 | $7700.00 | Window Closed / Lapsed |