Torque responsive release clutch mechanism

Details Torque responsive release clutch mechanism Torque responsive release clutch mechanism

1994-12-21

1996-10-29

Marmor, Charles A.

Interrelated power delivery controls, including engine control

Clutch control

Condition responsive control

192 5452, 192 5657, 192150, 173178, F16D 43206

Patent

active

055691188

ABSTRACT:
A torque responsive release clutch mechanism for a pneumatic power nutrunner having a housing (16) with an air inlet passage (11) and an air motor (12). The clutch mechanism includes a driving clutch half (22) with pockets (33) for two or more torque transferring balls (24), a bias spring (38), and an axially displaceable thrust element (34) for transferring the bias spring load to the balls (24), and a driven clutch half (23) having cam surfaces (25) for cooperation with the balls (24), wherein the driving clutch half (22) includes means (36, 44, 45) for feeding pressure air to the cylinder chamber (30), and the thrust element (34) has a cylindrical skirt portion (43) for sealing guidance in the cylinder chamber (30). A valve (44, 45, 48, 49) is arranged to accomplish a bias spring (38) compressing air force on the thrust element (34) as the latter has been initially displaced a certain distance by the balls (24) at release of the clutch.

REFERENCES:
patent: 2683512 (1949-11-01), Boice
patent: 3205986 (1965-09-01), Kramer
patent: 3487901 (1967-11-01), Kulman
patent: 4842078 (1989-06-01), Hansson
patent: 4951756 (1990-08-01), Everett et al.
patent: 5129465 (1992-07-01), Rahm

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