Lock device for semitrailers and the like
US6705137B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2002 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Jun 21, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5982
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A lock device is provided for use with a truck semi-trailer. The semitrailer has a dolly wheel or landing gear system alternately configurable between a trailer support configuration and a trailer travel configuration. The lock device comprises a rigid, one-piece hollow box adapted to fit over and enclose portions of both a crankshaft and a drive shaft of a dolly wheel or landing gear system so as to prohibit movement of a crank into a crank operating position. The box has first and second adjacent but mutually perpendicular closed sides which are adapted to be located adjacent to portions of the crankshaft and the drive shaft. Third and fourth adjacent but mutually perpendicular box sides are at least partially open and are adapted to permit the crankshaft and the drive shaft to extend therethrough. Fifth and sixth mutually parallel sides are located perpendicularly to and at the edges of the first, second, third and fourth sides. These fifth and sixth sides define mutually aligned holes through which a shackle lock can be passed to secure the lock box over portions of the crankshaft and drive shaft assembly so as to prohibit the dolly wheel or landing gear system from being opera…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.