Power nutrunner with torque release clutch and a setting tool
US6076438A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1998 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Sep 10, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A power nutrunner includes a planetary reduction gearing (12) and a torque limiting release clutch (13) disposed between a ring gear (25) of the reduction gearing (12) and the tool housing (11), wherein the ring gear (25) is tubular in shape and has an outer annular shoulder (41) at its one end carrying cam teeth (42) for cooperation with a spring biased thrust element (45) via balls (43) and cam surfaces (44). The thrust element (45) encircles the ring gear (25) and is biased by a pretensioned spring (53) which is backed by an adjustable support (52) including a rotatable screw element (70) connected to the housing (11) and provided with gear teeth (74) to be engaged by a setting tool (80) inserted through a front opening (79) in the housing (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.