Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1986-09-19
1987-08-04
Parker, Roscoe V.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
511345F, 408710, 192135, 83DIG1, B24B 5504
Patent
active
046836829
ABSTRACT:
A powered hand tool as a housing containing an air pressure driven motor with an output spindle extending from a work side of the housing and a work device such as a grinding wheel mounted thereon. A guard is mounted with the work side of the housing and at least partially surrounds the work device or grinding wheel. A handle mounted with the housing is provided for an operator to hold the tool. An air pressure flow control valve is mounted in the handle and includes a valve actuator member extending from the handle. An actuating lever is secured to the housing by a removable lever mount located in a locking groove in the housing and held in place by a portion of the guard. With the guard in place the actuating lever mount is positioned for hand actuation upon grasping the handle. Removal of the guard from the housing releases the lever mount and disables the tool by allowing the lever mount to slide freely from the locking groove thus removing the actuating lever from the tool and discouraging unsafe operation of the powered hand tool with the work device guard removed.
REFERENCES:
patent: 2422755 (1947-06-01), Strother
patent: 4103460 (1978-08-01), Law
patent: 4145848 (1979-03-01), Hutchins
patent: 4558539 (1985-12-01), Hansson
Dresser Industries Inc.
Parker Roscoe V.
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