Trailer hitch architecture adaptable to multiple conventional drawbar sizes having drawbar adaptor size-reducing sleeve for attachment pin
US10202009B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2016 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | Nov 17, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60D1/58
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The disclosed inventive concept provides a trailer hitch arrangement for use with a drawbar that is adaptable to universally use a high strength conventional hitch pin. Particularly, a reducing pin sleeve is fitted into the hitch pin hole of the drawbar. The inner diameter of the reducing pin sleeve is less than the hitch pin hole conventionally formed in the drawbar while the inner diameter of the reducing pin sleeve is the same as that of the receiver. When the drawbar is fitted into the receiver, the reducing pin sleeve is captured therein, thus preventing side-to-side movement relative to the drawbar. The disclosed inventive concept allows vehicle owners having a standard 3″ receiver trailer hitch which conventionally includes a ⅝″ hitch pin hole to safely and effectively handle above 20,000 lbs. trailer rating by insertion of the hitch pin sleeve into the ¾″ hitch pin hole provided in the drawbar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.