Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1987-12-04
1990-11-13
Broome, H.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
29890122, 29890127, 251357, 335280, 335255, H01F 708, H01F 300
Patent
active
049704842
ABSTRACT:
A composite elastomer-tipped tubular metallic device for armature and check valve applications has a hollow tubular metal body and a generally spherical elastomer ball fitted into an end of the body so as to project outwardly beyond the body end. Also, the body of the device has a seat structure provided internally at the end thereof which is adapted to capture and retain the ball in the body end. In several embodiments of the device, the seat structure is defined by a pair of axially spaced annular ribs formed internally in the body at the end thereof, with the ribs projecting radially inwardly toward a central axis of the tubular body. In one embodiment, one of the ribs may be formed as a split ring received in an annular groove in an interior surface of the hollow body.
REFERENCES:
patent: 586038 (1897-07-01), Hope
patent: 1420306 (1922-06-01), Cigol et al.
patent: 2364107 (1944-12-01), Svirsky
patent: 2505428 (1950-04-01), Pope
patent: 3559325 (1971-02-01), Webster
patent: 4368754 (1983-01-01), Roberts
Boehmer Dennis A.
Nijland Peter L. J.
Broome H.
Vernay Laboratories, Inc.
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