Geometrical instruments – Area integrators – Electrical
Patent
1981-10-26
1983-06-28
Little, Willis
Geometrical instruments
Area integrators
Electrical
33147F, 33174Q, C01B 334
Patent
active
043897894
ABSTRACT:
There is disclosed in the present application, a ring gage assembly comprising two interdigitated measuring elements slidably mounted and urged toward each other to embrace an external, generally cylindrical surface of a workpiece to provide a precise measurement of the dimension of the surface. For this purpose, the ring gage assembly is detachably mounted on a known amplifier/indicator device which includes mechanical amplification of the expansion and contraction of the ring gage and an indicator upon which there is shown by a pointer any deviation from the basic size of the dimension being measured at any given time by the ring gage. The ring gage assembly is coupled to the amplifier/indicator by a tapered plunger which enters a split socket in the measuring elements and, by being pressed into the socket, causes measuring surfaces of the two elements to approach each other and cooperates with the amplifier in magnifying pointer motion at the indicator for a given expansion or contraction of the ring gage.
REFERENCES:
patent: 1633807 (1927-06-01), Darlington
patent: 2424497 (1947-07-01), Nilsson
patent: 2472875 (1949-06-01), Adams
patent: 2563984 (1951-08-01), Witchger
patent: 2663942 (1953-12-01), Rudolph
patent: 3940856 (1976-03-01), Meyer, Jr.
Boiteau Maurice R.
Comtorgage Corporation
Little Willis
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