Adjustable length upper guide member
US4126057A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1977 |
| Grant date | Nov 21, 1978 |
| Priority date | — |
| Expiry date | Mar 21, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32451
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An adjustable length upper guide member for the hitch attachment of a tractor has an outer tubular guide element within which is telescopingly positioned an inner guide element so as to be relatively displaceable thereto. A housing on the outer guide element has a pair of jaws pivotally mounted therein and the jaws each have first arms which are engageable with annular grooves on the inner guide element and second arms which form actuating cams facing each other. A lever has an eccentric portion within the housing and one side of the eccentric portion is engageable against the housing and the other side of the eccentric portion engageable with the actuating cams so that pivoting of the lever causes the eccentric portion to act upon the cams and pivot the jaws to a disengaged position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.