Wrap spring brake
US7080719B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2004 |
| Grant date | Jul 25, 2006 |
| Priority date | — |
| Expiry date | Sep 7, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2127/005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A winch with a wrap spring brake is provided. The winch includes a rotatable drum configured to wind and unwind a cable. The cable may be connected to a load to be moved. A shaft is coupled to the drum such that rotation of the shaft causes rotation of the drum, thereby winding or unwinding the cable about the drum. The winch also includes an input hub capable of rotating and coupled to the shaft such that rotation of the input hub causes rotation of the shaft. The winch also includes a grounding hub. Finally, the winch includes a wrap spring wound about the grounding hub. The wrap spring has a first end and a second end. The first end of the wrap spring is coupled to the shaft such that the first end rotates with the shaft. The wrap spring is configured to be wrapped down on the grounding hub when the input hub is not rotated, thereby automatically locking the winch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.