Composite box wrench with ratchet module insert
US5713251A · kind A · utility
15Cited by
41References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1997 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Jan 17, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S81/90
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A double-ended ratcheting box end wrench includes a body formed entirely of glass-fiber-reinforced plastic material with box-type ratcheting inserts molded at opposite ends of the body. The body includes layers of random discontinuous glass-fiber-reinforced plastic material and a band of unidirectional continuous glass-fiber-reinforced plastic material. The body is subjected to a compression molding process embedded within which are the ratcheting inserts to form a composite wrench structure. Each insert includes a two-part housing in which are disposed a ratchet gear, a pawl and a bias spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.