Hydraulic torque impulse motor

Details Hydraulic torque impulse motor Hydraulic torque impulse motor

1985-12-12

1987-08-04

Kazenske, E. R.

Tool driving or impacting

Impacting devices

With anvil arranged to transmit torsional impact to tool

464 25, B25D 1502

Patent

active

046839615

ABSTRACT:
A hydraulic torque impulse tool, comprising an inertia drive member (10) which is rotated by a motor and which includes a fluid chamber (19), and a seal and torque transmitting mechanism (30) which is arranged to divide the fluid chamber (19) into two compartments (38, 39) during a short interval of the relative rotation between the drive member (19) and the output spindle (11). An annular leaf spring valve (82) is arranged to control the flow through a bypass passage (70,81, 79) interconnecting the two fluid chamber compartments (38, 39). The leaf spring valve (82) which by its shape is pretensioned toward open condition automatically occupies the open condition as the difference is pressure between the fluid chamber compartments (39, 39) is low and a closed condition as this difference exceeds a certain level.

REFERENCES:
patent: 3283537 (1966-11-01), Gillis
patent: 3289407 (1966-12-01), Brown
patent: 3319723 (1967-05-01), Kramer
patent: 3717011 (1973-02-01), Vana
patent: 4533337 (1985-08-01), Schoeps

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