Ladder stabilizer
AssigneeA. C. Innovations, Inc.
InventorsAvraham Y. Levi, Craig D. Quarberg
Life of this patent
Estimating the term…
Abstract
Stabilizer apparatus for attachment to an extension ladder for inhibiting sideways tipping and downward/rearward slipping thereof. Attached to the opposed side rails of the ladder proximate the upper end of the lowermost section are hinge blocks for pivotally joining a pair of tubular, telescoping, extensible legs to the ladder. The hinge brackets are specially designed to permit the tubular legs to be swung parallel to and directly adjacent with the ladder's side rails when the ladder is to be stowed and which the legs to be rotated laterally outward and forward of the base of the ladder during use. An articulated brace extends between the pair of legs and their associated ladder side rails to limit the extent to which the legs may be splayed relative to the ladder.
Claims8
Stabilizer apparatus for supporting a two-legged ladder against lateral and rearward movement, comprising in combination:
- (a) first and second hinge blocks attachable to the outer side surfaces of the side rails of a two-legged ladder proximate the upper ends thereof, each of said hinge blocks including a planar plate surface for abutting said outer side surfaces of said side rails and with an integrally formed, generally U-shaped channel projecting outwardly from said plate surface at a predetermined acute angle, there being aligned apertures formed centrally through the opposed sides of said U-shaped channel;
- (b) first and second elongated, telescopingly extendible, tubular pole members individually connected at one end thereof to said first and second hinge blocks, respectively, by hinge pins passing transversely through said pole members and said aligned apertures;
- and
- (c) a folding brace member attached to said tubular pole members at a location immediate said one and other ends of said tubular pole members and to said side rails of said ladder for limiting the extent to which said first and second pole members can be spread relative to said side rails of the ladder to which said pole members are hinged.
A ladder assembly comprising:
- (a) a pair of longitudinally extending rails held together in parallel, spaced-apart relation by a plurality of parallel, transversely extending, spaced-apart rung;
- (b) a pair of hinge brackets secured to said rails, each including a U-shaped leg receiving channel oriented at a predetermined acute angle with respect to said rail;
- (c) a pair of elongated, multi-segment, telescopingly-extendable and retractable legs having one end of each pivotally secured in a respective one of said leg-receiving channels of said pair of brackets whereby said legs can be selectively collapsed against said rails for storage or extended laterally outward and forward of said rails at said predetermined angle to support said rails in a desired inclined vertical disposition resistent to lateral rotational movement of said rails during use.
Dependencies are inferred from the claim text.