Measuring and testing – Speed – velocity – or acceleration – With means for retaining reading
Patent
1976-07-02
1977-10-04
Ruehl, Charles A.
Measuring and testing
Speed, velocity, or acceleration
With means for retaining reading
G01L 1300
Patent
active
040517292
ABSTRACT:
The beam of an amplifier beam transducer is maintained on a support edge of a fulcrum for pivotal movement thereabout yet restrained against other movement by a U-shaped yoke which cooperates with means disposed near opposite ends of the beam forming a pair of parallel axes about which the beam pivots. A fulcrum adjusting screw positions the support edge of a fulcrum lengthwise in the beam chamber varying the beam lengths on opposite sides of the support edge. A single load input cell or pair of differentially acting load input cells are threadably received in an opening on the housing and exert a force on one end of the beam tending to pivot the beam about the support edge of the fulcrum. An output cell, also threadably received in an opening on the housing, contacts the opposite end of the beam and produces an output signal in response to deviations of the input end of the beam. In one embodiment, the load output cell comprises a control orifice in which the orifice size is varied by deflection of the beam causing a corresponding variation in a fluid stream. One side wall of the housing is removable allowing access to the beam chamber for installation and removal of the internal component parts. An indicator is provided on a side wall of the housing which shows the lengths of the beam portions on opposite sides of the fulcrum support edge.
REFERENCES:
patent: 2631599 (1953-03-01), Markson
patent: 2669129 (1954-02-01), Williams
patent: 3185168 (1965-05-01), Phillips
Ruehl Charles A.
Thordarson, Inc.
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