Weighing scales – Self-positioning – Repositioning in response to deflection under load
Patent
1982-03-24
1983-10-25
Hartary, Joseph W.
Weighing scales
Self-positioning
Repositioning in response to deflection under load
177178, 177237, G01G 129
Patent
active
044113285
ABSTRACT:
A weighing device is disclosed which comprises a frame, a pan element for supporting a load to be weighed, a channel member connected to the pan for retaining a plurality of weight elements in a vertically movable manner, a motor supported within the frame and a shaft member operatively connected to and extending from the motor, the shaft member including a spring for supporting the pan element. A plurality of collapsible support members are secured at one end thereof to the frame and each have at their opposite ends a device that is adapted to receive and lift one of the weight elements when the support member is in an extended and non-collapsed position. A camming arm is secured to the shaft member and extends in a direction toward the support members. A switch is provided for energizing the motor when the pan is depressed by a load. The motor turns the shaft member and guides the camming arm into contact with successive collapsed support members in a step-by-step manner to place a number of the support members in an extended position and lift a corresponding number of the weights substantially equal to the weight of the load.
REFERENCES:
patent: 1944071 (1934-01-01), Essmann
patent: 2716546 (1955-08-01), Stelzer
patent: 2764400 (1956-09-01), Mettler
patent: 3055444 (1962-09-01), Chyo
patent: 3111180 (1963-11-01), Johnson
patent: 3842925 (1974-10-01), Crespi
patent: 4106580 (1978-08-01), DeMasters
Hartary Joseph W.
Pitney Bowes Inc.
Scolnick Melvin J.
Scribner Albert W.
Soltow, Jr. William D.
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