Geometrical instruments – Distance measuring – Single contact with a work engaging support
Patent
1988-04-28
1989-07-11
Haroian, Harry N.
Geometrical instruments
Distance measuring
Single contact with a work engaging support
G01B 702
Patent
active
048458554
ABSTRACT:
A measuring instrument having a column 2 mounted on a base and a sliding unit 3 adapted for vertical displacement on said column 2. The sliding unit 2 has a housing 9 and a plate 10. The housing 9 is suspended on the column 2 by means of a cable 7 which is provided with a balancing weight. The plate 10 carrying a gauging element 5 is operatively connected by a counterweight device 17 to the housing 9. The counterweight device 17 has a lever 16 which is mounted on the housing 9. Lever 16 has a weight mounted on one end thereof. The other end of the lever 16 accommodates ball bearings 21 which serve to support plate 10 through cams 22. The instrument has a latching device 23 for establishing a zero position between plate 10 and housing 9 and for enabling adjustment of a measuring force. A damping device 26 interposed between plate 10 and housing 9 enables to cushion jolts occurring on the gauging member 5.
REFERENCES:
patent: 2996806 (1961-08-01), Zieher
patent: 3845561 (1974-11-01), Elsdoerfer
patent: 4276696 (1981-07-01), Ernst
patent: 4432141 (1984-02-01), Marcyan
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