Low-noise screwing tool coupling

Details Low-noise screwing tool coupling Low-noise screwing tool coupling

1988-11-16

1990-08-14

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

B25B 23157

Patent

active

049477145

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).

REFERENCES:
patent: 2634640 (1953-04-01), Pedersen
patent: 2724299 (1955-11-01), Amtsberg
patent: 4655103 (1987-04-01), Schreiber et al.

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