Spread-style coupler with supplemental lock system
US7744301B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2007 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Dec 10, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/593
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A coupler includes a first hook assembly comprising a first hook adapted to receive a first associated attachment pin and a second hook assembly comprising a second hook adapted to receive a second associated attachment pin. The second hook assembly selectively pivots under force of an actuator relative to the first hook assembly by an actuator. The actuator comprises a screw jack that includes a locking sleeve to prevent unintended rotation of the screw member. The actuator can be a hydraulic cylinder and the coupler can include a locking cam that moves between a retracted position and an extended position, with a supplemental lock that selectively prevents movement of the locking cam from the extended position to the retracted position. In such case, the actuator is operatively coupled to the second hook assembly and the locking cam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.