Push-to-release cable operating apparatus
US4872368A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 28, 1988 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | Jul 28, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20726
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A cable operating apparatus includes a pawl and ratchet arrangement for maintaining an operating lever in a cable-tensioning position. The pawl is bifurcated to define a pair of pawl tips, the pawl being pivotable in opposite directions for effecting alternate engagement of the pawl tips with the ratchet. The pawl contains a slot that receives the pawl pivot pin and which permits lateral movement of the pawl between a pair of end positions. An overcenter spring arrangement alternately pivotally biases the pawl in opposite directions when the pawl is displaced toward the end positions, respectively. A cam arrangement serves to effect lateral displacement and pivotal movement of the pawl when the operating lever is pivoted from the released position toward a cable tensioning position. When the operating lever is locked in a cable-tensioning position by the pawl and ratchet arrangement, further movement of the lever in the cable-tensioning direction causes release of the pawl from the ratchet, whereupon the operating lever may either be pivoted further in the cable-tensioning direction, or released for return to the cable-released or off position. According to a modification, a manual…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.