Geometrical instruments – Distance measuring – Sounding type
Patent
1990-04-17
1990-10-30
Shoap, Allan N.
Geometrical instruments
Distance measuring
Sounding type
33731, 116227, G01F 2304
Patent
active
049659421
ABSTRACT:
A dipstick handle of the invention includes a unitarily molded handle, such as a finger ring, having an integrally molded hollow shaft. The shaft has one or two pairs of opposed slots through its outside surface. A dipstick blade is received by one end of a hollow insert which has two pairs of tabs at its other end for snapping into the slots through the surface of the shaft. Pressure on the tabs engaged in the slots releases the tabs and enables the insert and dipstick blade to be withdrawn. The handle seals the tube into which the dipstick is fitted to avoid escape of noxious gases. The blade may be oriented in any of four directions with respect to a plane of the handle.
REFERENCES:
patent: 2449294 (1948-06-01), Bickle
patent: 3474884 (1969-10-01), Braun
patent: 4531293 (1985-07-01), Grinde
patent: 4622723 (1986-11-01), Krauss
patent: 4761886 (1988-08-01), Wilson et al.
patent: 4841597 (1989-06-01), Kolonia
Moeller Manufacturing Co., Inc.
Shoap Allan N.
Wirthlin Alvin
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