Metal working – Method of mechanical manufacture – Electrical device making
Patent
1981-03-30
1982-12-28
Woodiel, Donald O.
Metal working
Method of mechanical manufacture
Electrical device making
29407, 29610R, 73 4R, 73746, 338 39, G01L 2700, G01R 300
Patent
active
043654061
ABSTRACT:
A hydraulic pressure transducer comprises a cylindrical housing having a plurality of circumferential inwardly and outwardly directed ribs which axially position and retain coaxially aligned operative components within the transducer. These components include a hydraulic piston and cylinder, a restoring spring disposed between two centering and retaining stabilizer cups, and a biasing spring which maintains the components in compressed juxtaposition to ensure accurate and immediate response while minimizing axial dimensional stack up. The transducer senses hydraulic pressure in, for example, a brake line and provides a variable resistance output which may be used in an auxiliary electric brake system controller commonly used on recreational trailers and the like.
REFERENCES:
patent: 596581 (1898-01-01), Edson
patent: 2525095 (1950-10-01), Coxon et al.
patent: 4042899 (1977-08-01), Tomczak et al.
patent: 4279162 (1981-07-01), Neill et al.
Neill Daniel L.
Tribe Leonard T.
Kelsey Hayes Company
Murray David D.
Oberholtzer Steven L.
Skinkiss Ralph J.
Woodiel Donald O.
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