Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Patent
1982-03-26
1984-09-04
Cohan, Alan
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
137 85, 137596, 1376275, F16K 3700, F15B 500
Patent
active
044691270
ABSTRACT:
The signal generating device provides both an electrical signal as well as a vacuum signal in response to the degree of opening of a throttle valve in a single body which has a vacuum inlet port and a vacuum outlet port as well as a atmospheric inlet port and which includes a movable diaphragm positioned within the body to define a vacuum chamber in communication with the vacuum outlet port and an atmospheric chamber in communication with the atmospheric inlet port with the movable diaphragm being responsive to the vacuum pressure within the vacuum chamber. The movable diaphragm is controlled by biasing springs and a valve member is associated with a diaphragm to control fluid communications between the vacuum inlet port and the vacuum chamber as well as fluid communication between the vacuum chamber and the atmospheric chamber. A cam, which is connected to the throttle valve, is rotatably positioned in the body of the device to both control the movable diaphragm and a potentiometer, which is situated on the cam, for outputting an electrical signal proportional to the throttle opening.
REFERENCES:
patent: 2678661 (1954-05-01), Roper et al.
patent: 3739797 (1973-06-01), Caldwell
patent: 3938329 (1976-02-01), van Basshuysen
patent: 3978175 (1976-08-01), Stoltman
patent: 4134418 (1979-01-01), Woodcock
patent: 4315521 (1982-02-01), Anderson et al.
patent: 4316479 (1982-02-01), Franz et al.
patent: 4347699 (1982-09-01), Kitamura
patent: 4366670 (1983-01-01), Kitamura
Aisin Seiki Kabushiki Kaisha
Cohan Alan
Rivell John A.
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