Feed safety apparatus for movable member

Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof

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Details

511658, 511659, B24B 4908

Patent

active

043685960

ABSTRACT:
A feed safety apparatus for a movable member slidably supported on a stationary bed of a machine tool. A feed device moves the movable member at various speeds. A hydraulic cylinder is fixedly mounted on the movable member and includes a piston slidably received therein. A reference plate member is secured to the bed and operatively connected to the piston for permitting bodily movement of the hydraulic cylinder and the piston within a predetermined distance, but restraining movement of the piston beyond the predetermined distance to cause relative movement between the hydraulic cylinder and the piston. A fluid flow regulating device is disposed between the pair of cylinder chambers of the hydraulic cylinder for restrictively controlling relative movement between the hydraulic cylinder and the piston.

REFERENCES:
patent: 2254784 (1941-09-01), Silven
patent: 2561004 (1951-07-01), Wilson
patent: 3124910 (1964-03-01), Deser
patent: 3827190 (1974-08-01), Moriguchi
patent: 4115958 (1978-09-01), Englander

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