Weighing scales – Self-positioning – Fluid transmission to pressure gauge
Patent
1976-05-06
1977-10-25
Miller, Jr., George H.
Weighing scales
Self-positioning
Fluid transmission to pressure gauge
G01G 504
Patent
active
040552276
ABSTRACT:
A heavy duty hydraulic weighing apparatus includes an integral base having a piston mounted in and encircled by an annular ring, a cooperating cylinder which fits radially between the piston and ring to receive the piston in freely interfittable relatively reciprocally moveable relation, and a flexible diaphragm of fluid impervious material sealed in the cylinder and overlying the piston to form a pressure receiving chamber. A bearing arrangement, which facilitates free relative reciprocal movement between the piston and base and the cylinder to permit heavy loading, comprises a plurality of cylindrical raceways, a first portion of each being defined in the outer wall of the cylinder and a second portion of each being defined in the inner wall of the annular ring. First and second bearing inserts, which are highly resistant to wear and minimize bearing friction, at least partially line the first and second raceway portions respectively. These inserts are arcuate, having angular dimensions less than the angular dimensions of the raceway portion in which they are installed, and are recessed into the raceway portions to be firmly held therein. Ball bearings are disposed in each raceway and springs loosely position each ball bearing to contact the bearing inserts.
REFERENCES:
patent: 2392702 (1946-01-01), Saunders
patent: 2960113 (1960-11-01), Bradley
patent: 3339462 (1967-09-01), Bankowski
Miller Jr. George H.
The A. H. Emery Company
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