Buzz-proof solenoid

Details Buzz-proof solenoid Buzz-proof solenoid

1975-06-20

1976-11-16

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335248, 335262, H01F 712

Patent

active

039926877

ABSTRACT:
A slotted resilient wedging sleeve is slideably mounted on one end of a solenoid plunger in position to wedgingly coact with an inwardly chamfered edge on the adjacent axial end of the solenoid bobbin when the plunger is drawn into the bore of the bobbin by current flow through the coil. A compression spring on the end of the plunger urges the sleeve into wedging engagement with the chamfered edge and causes the inner periphery of the sleeve to take up any play between the bobbin and plunger, thereby eliminating buzzing of the plunger.

REFERENCES:
patent: 2651744 (1953-09-01), Acklin et al.
patent: 3117257 (1964-01-01), Stone
patent: 3119954 (1964-01-01), Bachi
patent: 3185902 (1965-05-01), Fecho et al.
patent: 3396354 (1968-08-01), Fisher
patent: 3510814 (1970-05-01), Nordfors
patent: 3593240 (1971-07-01), Garczynski

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