US4425984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable handrail for ladders
Assignee: Individual
•
Filing: 1982-08-09
•
Granted: 1984-01-17
•
Expires: 2002-08-09
Abstract
Abstract Parallel tubular arms removably slide into the openings through the openings in the side rails and the hollow rungs of aluminum ladders. A swivel on at least one arm protruding through both ladder rails turns to secure the handrail to the ladder. Orthogonal extensions of the arms support the handrail in a fixed position away from the ladder. Depending on the relative lengths of the supports the handrail may be in parallel or sloping alignment with the ladder. Handrails may be installed on both sides of the ladder and a restraining means secured between the handrails.
Inventors
- 👤 Paul Lachance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:55
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/14; E06C7/143; E06C7/18; E06C7/181; E06C7/183; E06C7/185
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
139 words
A single removable self-securing and side-reversible handrail for ladders comprising: a ladder provided with at least one pair of horizontally aligned openings, and at least one separate opening spaced apart from the pair, all through the side rails of the ladder; an elongated rigid straight handrail portion for manual grasping; a rigid support portion permanently secured to and extending from each end of the handrail member to maintain the railing, in a fixed position spaced apart from the ladder; a rigid elongated attaching portion permanently secured to each support away from the handrail portion, at least one of which attaching portions extends through both of the paired openings and the other of which attaching portions extends through at least one side rail opening; and a movable permanently attached means of removably securing the attaching portion within the paired openings.
Claim 2
Dependent Claim
139 words
A single removable self-securing and side-reversible handrail for ladders comprising: a ladder provided with at least one pair of horizontally aligned openings, and at least one separate opening spaced apart from the pair, all through the side rails of the ladder; an elongated rigid straight handrail portion for manual grasping; a rigid support portion permanently secured to and extending from each end of the handrail member to maintain the railing, in a fixed position spaced apart from the ladder; a rigid elongated attaching portion permanently secured to each support away from the handrail portion, at least one of which attaching portions extends through both of the paired openings and the other of which attaching portions extends through at least one side rail opening; and a movable permanently attached means of removably securing the attaching portion within the paired openings.
Claim 3
Dependent Claim
23 words
The invention of claim 1 wherein the entire removable handrail is constructed of one continuous piece of material bent into the desired shape.
Claim 4
Dependent Claim
136 words
A single removable self-securing and side-reversible handrail for ladders comprising: a ladder provided with at least one pair of horizontally aligned openings, and at least one other separate opening spaced apart from the pair, all through the side rails of the ladder; a single rigid elongated member formed into a straight handrail portion, a support portion extending from each of two ends of the handrail portion, an attaching portion extending from each support portion which attaching portions are inserted through the openings in the side rails of the ladder, wherein at least one of the attaching portions extends through both ladder rails within paired openings and the other of which attaching portions extends through at least one side rail opening; and a movable permanently attached means of removably securing the attaching portion within the paired openings.
Claim 5
Dependent Claim
136 words
A single removable self-securing and side-reversible handrail for ladders comprising: a ladder provided with at least one pair of horizontally aligned openings, and at least one other separate opening spaced apart from the pair, all through the side rails of the ladder; a single rigid elongated member formed into a straight handrail portion, a support portion extending from each of two ends of the handrail portion, an attaching portion extending from each support portion which attaching portions are inserted through the openings in the side rails of the ladder, wherein at least one of the attaching portions extends through both ladder rails within paired openings and the other of which attaching portions extends through at least one side rail opening; and a movable permanently attached means of removably securing the attaching portion within the paired openings.
Claim 6
Dependent Claim
102 words
The invention of claims 1 or 3 wherein the securing means is an elongated swivel pin bent inwardly at an end and rotatably secured to a side of the end of the attaching portion so that when the swivel pin is aligned parallel with the attaching portion, the bent pin end stays in front of the attaching portion, and the two pass through openings in the ladder support and after passing through the opening the swivel rotates orthogonally to the attaching portion with the bent end drawn down by the pull of gravity, and prevents it from being withdrawn through the opening.
Claim 7
Dependent Claim
88 words
The invention of claims 1 or 3 wherein the securing means comprises a tensioned member permanently attached to the interior of the attaching portion; an end portion of which tensioned member normally protrudes under tension beyond the perimeter of the attaching portion, and which end portion may be moved temporarily within the perimeter of the attaching portion and after passing beyond the side rail opening the end portion protrudes beyond the side rail opening and the handrail is held within the ladder by the permanently attached tensioned member.
Claim 8
Dependent Claim
44 words
The invention of claims 1 or 3 wherein the attaching portions are of equal length permanently secured to the supports and both pass through paired openings in the ladder and each attaching portion is provided with a movable attached securing means at its extremity.
Claim 9
Dependent Claim
33 words
The invention of claims 1 or 3 wherein the support portions are of equal lengths and the straight handrail portion is in parallel alignment with the ladder at a safe distance for grasping.
Claim 10
Dependent Claim
42 words
The invention of claims 1 or 3 wherein the support portions are of unequal lengths so that the straight handrail portion slopes relative to the ladder to position the straight handrail equidistant from a user standing at an angle to the ladder.
Claim 11
Dependent Claim
43 words
The invention of claims 1 or 3 wherein one handrail is inserted on one side of the ladder and a second handrail is inserted on an opposite side of the ladder in alternate openings to provide a double set of straight parallel handrails.
Claim 12
Dependent Claim
31 words
The invention of claim 9 wherein a flexible retaining means is secured by a releasable means from one handrail to the other to restrain the user from falling off the ladder.
Claim 13
Dependent Claim
46 words
The invention of claims 1 or 3 wherein the openings through the ladder rails comprise hollow ladder rungs which open through each rail, one attaching portion passes completely through both side rails and the other attaching portion is shorter and passes through only one side rail.
Claim 14
Dependent Claim
29 words
The invention of claims 2 or 3 wherein the invention is fabricated of rigid cylindrical light weight tubing for ease of moving the single piece handrail on the ladder.
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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) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |