Geometrical instruments – Gauge – Automotive
Patent
1997-07-31
1999-02-23
Fulton, Christopher W.
Geometrical instruments
Gauge
Automotive
33555, 33712, G01B 502
Patent
active
058731733
ABSTRACT:
A device for measuring length and vertical clearance of engine connecting rods comprising a base which is attached to an upstanding member in a hinged fashion. A vertical guide slot of substantial length is disposed within the upstanding member along a longitudinal center axis and distal to the base. A wrist pin mandrel comprising a guide slot receiving member is disposed on the upstanding member such that said guide slot receiving member is engaged in the vertical guide slot. Positioned at the top of the upstanding member is a dial indicator within a mount. A plunger projecting downward from said dial indicator rests upon the top of the mandrel's guide slot receiving member. Proximally to the base of the measuring surface is a standard mount which engages a standard. The standard is vertically slidable and adapted to be locked at adjusted elevations within said mount. A pair of self-centering pins extend perpendicularly from the measuring surface which are offset one to each side of the standard equal distance and on a horizontal line above the mount. A lever is pivotally attached beside a lower stop of the guide slot for urging the mandrel upward within the guide slot.
REFERENCES:
patent: 1436104 (1922-11-01), Husak
patent: 1569119 (1926-01-01), Feider
patent: 1575797 (1926-03-01), Shaw
patent: 2025008 (1935-12-01), Arp
patent: 2336860 (1943-12-01), Graham
patent: 2664643 (1954-06-01), Billeter
patent: 2933815 (1960-04-01), Czaplinski et al.
patent: 5375341 (1994-12-01), College et al.
Fulton Christopher W.
Moore Marvin L.
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