Low-noise screwing tool coupling
US4947714A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1988 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Nov 16, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D43/2022
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A coupling for a motor operated screwing tool contains three coupling elements of which one is provided on an output shaft, another one on a drive shaft, and a intermediate, one of which is constructed as a coupling ring (8) which is longitudinally displaceable on the output shaft, whereby a spring (4) is arranged between the drive shaft and the coupling ring urges the latter into engagement with the coupling element on the output shaft. A disengagement without rattling and with low wear is achieved after reaching the limiting torque by means of sloping surfaces (2, 116) at the longitudinally displaceable coupling ring (8) and the output shaft, which sloping surfaces (2, 116) cooperate with the spring (4) and an adjustable depth stop on a tool housing (23), and wherein the movement of the coupling ring (8) is defined by means of two shoulders (10, 11) arranged on the output shaft (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.