Detector for top dead center position of a piston for automobile

Details Detector for top dead center position of a piston for automobile Detector for top dead center position of a piston for automobile

1979-04-11

1981-04-28

Yasich, Daniel M.

Signals and indicators

Alarms

Fluid-pressure variation

73116, 116280, G01M 1500, G08B 300

Patent

active

042638682

ABSTRACT:
The present invention is directed to a detector for detecting the top dead center position of a piston by resiliently installing a check valve within a cylinder body and having a threaded part disposed at the lower part of the cylinder body to fit a threaded hole which is for inserting an ignition plug of an engine cylinder.
For detecting the top dead center position of the piston, the foregoing threaded part is attached to the threaded hole of the automobile engine and compressed air which is produced within the cylinder by an ascent of the piston is exhausted outside the cylinder body through the check valve and, when the piston attempts to descend, airtightness is maintained within the cylinder by means of the check valve and the piston is held at the top dead center position.

REFERENCES:
patent: 777538 (1904-12-01), Puckett
patent: 1535688 (1925-04-01), Sauer
patent: 2098058 (1937-11-01), Morgan
patent: 2698000 (1954-12-01), Rainsbury
patent: 2759448 (1956-08-01), Pitts
patent: 3091213 (1963-05-01), Maskell et al.
patent: 3779081 (1973-12-01), Holtzman

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