Methods of modifying a trailer kingpin in situ
US7762167B2 · kind B2 · utility
3Cited by
6References
20Claims
0Family size
Inventor
Key dates
| Filing date | Apr 20, 2007 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Apr 22, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T82/2522
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of enlarging a kingpin which attaches a trailer to a fifth wheel on a tractor includes the step of providing a collar having a base, shank and head with the shank having a desired diameter. The collar also has an internal aperture having a first portion of a certain diameter and a second portion of lesser diameter. An existing kingpin is machined in situ on the trailer to a dimension commensurate with the internal apertures of the collar. The collar and machined kingpin are then joined to form a new kingpin having the desired diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.