Purse ring having multiple rollers
US7743475B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 25, 2007 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Mar 14, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B45/027
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A purse ring for coupling a purse seine and a purse line to each other. The purse ring includes a frame, which is coupled at a first end thereof to the purse seine and passes the purse line through a second end thereof, and at least three rollers, which are rotatably provided in the frame at positions at which the purse line are brought into contact with the frame. The purse seine having the multiple rollers has a structure such that friction between the purse line and the purse ring is reduced, thus increasing the lifetime of the purse ring, thereby reducing costs of replacement of the purse ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.