Vehicle trailer hitch
US4678199A · kind A · utility
Inventor
Key dates
| Filing date | Nov 17, 1986 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Nov 17, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60D1/52
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A trailer hitch for a vehicle comprises a support tube structure which is to be mounted to a vehicle and which removably carries a hitch ball bar. An engagement structure is provided which firmly locks the ball bar to the support tube structure with the aid of a safety bolt which is axially movably disposed in the ball bar and adapted to project from its end within the support tube structure and to lock the ball bar in the support structure in rattle-free engagement therewith. Preferably, the safety bolt is operable by a mechanism extending through the ball bar and the hitch ball so that the safety bolt cannot be actuated when a trailer tongue is disposed on the hitch ball.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.