Motors: expansible chamber type – Working member position feedback to motive fluid control – Valve locking means
Patent
1989-08-02
1991-01-29
Ostrager, Allen M.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Valve locking means
91 1, 91DIG4, F16D 3306
Patent
active
049878220
ABSTRACT:
A linear actuator comprising a linear motor, more especially in the form of a pneumatic motor, which has a housing containing an axially moving piston which is connected with an actuating rod extending out of the motor housing at a working end thereof, a control device, for instance in the form of valve means, for operation of the motor, and a sensor means responsive to certain positions of the actuating rods. In order to simplify and cheapen production of such an actuator while facilitating and speeding up installation of the linear motor, the control device and sensor device are permanently connected to form a readily handled working unit, and the control device and the sensor device are arranged on the control end, opposite to the working end, of the linear motor.
REFERENCES:
patent: 3452645 (1969-07-01), Barltrop
patent: 4889035 (1989-12-01), Goodnow
Festo KG
Ostrager Allen M.
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