Portable swiveling lift device
US5738185A · kind A · utility
Inventor
Key dates
| Filing date | Sep 17, 1996 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Sep 17, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C7/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lifting apparatus having a frame with a first bracing member and a second bracing member pivotally connected together with a ladder receptacle means affixed to an end of the second bracing member opposite the pivotal connection, and a pulley affixed to the frame so as to receive a cable therein such that a portion of the cable extends vertically downwardly between the first and second bracing member. At least one wheel is connected to an end of the first bracing member opposite the pivotal connection with the second bracing member so as to allow and end of the first bracing member to be moved toward and away from the second bracing member. A winch is attached to the first bracing member and a cable extends outwardly from the winch and over the pulley. A stop plate is connected to the frame at a location below the pivotal connection so as to limit an angle of pivotal movement of the first bracing member with respect to the second bracing member. The ladder sheath is pivotally connected to an end of the second bracing member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.