Pushbutton locking attachment with tolerance compensating latch

Details Pushbutton locking attachment with tolerance compensating latch Pushbutton locking attachment with tolerance compensating latch

1977-07-20

1980-03-04

Scott, Samuel

Machine element or mechanism

Control lever and linkage systems

Elements

200 42R, G05G 506

Patent

active

041910664

ABSTRACT:
A latching and locking arrangement for pushbutton controls is disclosed. A latch carries a plunger resiliently biased by a compression spring having a stronger rating than a pushbutton return spring. The latch is pivoted so that the plunger engages and depresses the pushbutton, after which the latch is translationally moved along its pivotal axis to a latched position wherein a pivot stop prevents rotation of the latch whereby the pushbutton is retained in a depressed position by the plunger. The resiliently biased plunger compensates tolerance deviations between the latched position of the latch and the depressed position of the pushbutton, which deviations were not compensated by an integral solid arm portion of the latch formerly used to hold the pushbutton in a depressed position. An improved pivot stop for the latch is also disclosed. Provision is made for padlock hasp insertion when the latch is in its latched position whereby the pushbutton may be locked in its depressed position.

REFERENCES:
patent: 1550031 (1925-08-01), Kovar et al.
patent: 2523125 (1950-09-01), Ley
patent: 2876302 (1959-03-01), Flocken
patent: 3267245 (1966-08-01), Vincent
patent: 3283608 (1966-11-01), Davis et al.
patent: 3321589 (1967-05-01), Persia et al.
patent: 3511954 (1970-05-01), Di Pilla
patent: 3514564 (1970-05-01), Di Pilla
patent: 3604868 (1971-09-01), Batcheller et al.

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