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US 4,380,758 AGranted
Motor actuated bell
AssigneeKobishi Electric Co., Ltd.
InventorTadashi Ishii
Life of this patent
Estimating the term…
Abstract
A motor actuated bell comprises a crank member operatively connected to a motor drive shaft. An elongated connecting plate is connected at one end thereof to the crank member for being reciprocally moved along its axis. A pivotal lever is connected at one end thereof generally perpendicularly to the other end of said connecting plate for being subjected to swinging movement. A hammer means has a resilient means resiliently supporting a hammer element on the lever.
Claims1
A motor actuated bell which comprises:
- (a) a gong;
- (b) a base mounted with said gong;
- (c) a motor mounted on said base and having a rotatable drive shaft;
- (d) a crank member fixedly secured to said motor drive shaft for rotation therewith, said crank member having an eccentric pin extending away from said motor in eccentric relation to the axis of said motor drive shaft;
- (e) a rectangular connecting plate disposed generally in parallel relation to said base and lying in a plane generally perpendicular to the axis of said eccentric pin, said connecting plate having a slot formed therethrough at one end thereof and extending perpendicular to the longitudinal axis thereof, and said eccentric pin being received in said slot for sliding movement therealong, whereby said connecting plate is reciprocally moved along its axis through said eccentric pin upon rotation of said motor drive shaft;
- (f) a rigid lever pivotally mounted on said base intermediate opposite ends thereof, said lever being fixedly secured at one end thereof generally perpendicularly to the other end of said connecting plate for swinging movement in parallel spaced relation to said base;
- and
- (g) a hammer means having a hammer element for striking against the inner wall of said gong, said hammer means having a leaf spring fixedly secured at one end thereof to the other end of said lever and extending therefrom along the axis of said lever, and said leaf spring carrying said hammer element at the other end thereof.
5 more elements
Dependencies are inferred from the claim text.