US 5,439,072 AGranted

Modular ladder system

OwnerJoseph R. Jenkins, Jr.inventor

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Abstract

A modular ladder system for climbing trees is provided, comprising at least two ladder modules, each ladder module comprising a hollow, primary support member having an upper end and a lower end; a secondary support member, telescopingly slidable within the primary support member, having an upper end and a lower end; a first step attached to the lower end of the secondary support member; a second step attached to the lower end of the primary support member; a top step attached to the upper end of the primary support member; a spring-loaded lock operatively disposed between the primary support member and the secondary support member for locking the position of the secondary support member relative to the primary support member; at least two stabilizer brackets attached to the primary support member and the secondary support member for stabilizing the ladder module against the tree; and a strap and quick-release buckle attached to the primary support member for holding the ladder module to the tree.

Claims6

Dependent claims

A portable ladder module for climbing trees, comprising:

(a) a hollow, primary support member having an upper end and a lower end;
(b) a secondary support member, telescopingly slidable within said primary support member between a retracted position and an extended position, having an upper end and a lower end;
(c) a bottom step attached to said lower end of said secondary support member;
(d) a top step attached to said upper end of said primary support member, wherein said top step is sufficiently wide to accept both shoes of a climber;
(e) an intermediate step attached to said primary support member between said bottom step and said top step;
(f) locking means operatively disposed between said primary support member and said secondary support member for selectively locking the position of said secondary support member in either a retracted position or an extended position relative to said primary support member;
(g) means attached to said primary support member and said secondary support member for stabilizing said ladder module against said tree;
and
(h) means attached to said primary support member for holding said ladder module to said tree.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/214,835Filed 17 Mar 1994
Granted: 8 Aug 1995
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

E06C 1/381
Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads,…:…
E06C 1/125
Extensible, e.g. telescopic: with tubular longitudinal members nested within each other
E06C 1/34
With rigid longitudinal member or members: ladders attached to structures, such as windows, cornices, poles, or the like
E06C 7/081
Special construction of longitudinal members, or rungs or other treads: rungs or other treads comprising anti-slip features