Apparatus and method for forming a retaining ring on a wheel for a ratchet wrench
US6422053B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2001 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Aug 31, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49474
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of forming a ratchet wheel adapted to be disposed in at least one end of the ratchet wrench for engaging an element to be turned, includes the step of providing a wheel blank having a generally hollow, cylindrical body formed with a radially projecting rib located midway between an upper hub portion and a lower hub portion, the upper hub portion being integrally formed with an upstanding lip having a diameter equal to or slightly smaller than the diameter of the upper hub portion. The method also includes the step of bending the lip inwardly to form a retention ring adapted to engage the upper surface of the element to be turned and prevent the element from slipping through the wheel of the ratchet wrench.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.