Device for stopping or fixing moving or mobile components

Details Device for stopping or fixing moving or mobile components Device for stopping or fixing moving or mobile components

1978-07-27

1980-10-14

Hayes, Monroe H.

Optics: motion pictures

Camera and/or projector drive mechanisms

With film engaging claws reciprocally driven to engage film

352177, 352225, G03B 122

Patent

active

042277833

ABSTRACT:
Thin walled components, which are moving or capable of movement, are stopped or clamped by the cooperation between an electromagnet core and an independent short-circuit component. The mobile component is always in contact with the core of the electromagnet and with the short-circuit component such that no noise is produced when the mobile component is stopped or clamped.

REFERENCES:
patent: 1125662 (1915-01-01), Corbin et al.
patent: 1197568 (1916-09-01), Weeks
patent: 1350548 (1920-08-01), Darby
patent: 3397937 (1968-08-01), Schrader
patent: 3533345 (1970-10-01), Starp
patent: 3637125 (1972-01-01), Freudenschuss
patent: 3694065 (1972-09-01), Roth
patent: 3702730 (1972-11-01), Russell
patent: 3779633 (1973-12-01), Ichiyanagi
patent: 3907413 (1975-09-01), Morell et al.
patent: 3908882 (1975-09-01), Wakahara
patent: 4078765 (1978-03-01), Bogli

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