Back to results
US 8,875,839 B1Granted
Fall restraint system for telescoping ladders
OwnerWilliam Licea, John Rojasinventors
Life of this patent
Estimating the term…
Abstract
A fall restraint system having a retractor assembly including a housing assembly that is mounted onto an aerial apparatus. A base pulley assembly is also mounted onto the aerial apparatus. A cable having first and second ends is partially stored within the housing assembly, whereby the first end is fixed within the housing assembly. The second end is threaded around the base pulley assembly and is also fixed onto the aerial apparatus. Tensioning means keep a predetermined tension on the cable while the aerial apparatus extends from a retracted position to an extended position and vice-versa.
Claims17
A fall restraint system comprising:
- A) a retractor assembly having a housing assembly mounted onto an aerial apparatus;
- said aerial apparatus being a ladder capable of extending and retracting;
- B) a base pulley assembly;
- C) a cable having first and second ends, said cable partially stored within said housing assembly, whereby said first end is fixed within said housing assembly;
- and
- D) tensioning means configured to keep a predetermined tension on said cable while said cable extends and retracts with said aerial apparatus as said aerial apparatus extends and retracts between a retracted position and an extended position respectively, said tensioning means comprises at least one spring member mounted onto a first supporting pin within said housing assembly, said at least one spring member is secured to a first pulley assembly, a second pulley assembly is mounted onto a second supporting pin within said housing assembly, said second end of said cable is threaded around said first and second pulley assemblies, said cable passes through said housing assembly, wherein said cable is threaded around said base pulley assembly, and is fixed onto said aerial apparatus.
3 more elements
Dependencies are inferred from the claim text.