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US 4,286,258 AGranted
Motor actuated bell
OwnerTadashi Ishiiinventor
Life of this patent
Estimating the term…
Abstract
A motor actuated bell comprises an elongated resilient means for urging a hammer into striking contact with a gong. The hammer is secured to the central portion of the resilient means. A cam means is connected to the motor drive shaft and acts on the hammer to intermittently urge the same away from the gong against the bias of the resilient means.
Claims8
A motor actuated bell which comprises:
- (a) a base;
- (b) a motor mounted on said base and having a rotatable drive shaft;
- (c) a gong mounted on said base;
- (d) a hammer for striking against said gong;
- (f) an elongated resilient means for urging said hammer into striking contact with said gong, said resilient means mounted on said base, and said hammer being supported on the central portion of said elongated resilient means;
- and
- (g) a cam means connected to the motor drive shaft and acting on said hammer to intermittently urge the same away from said gong against the bias of said resilient means.
4 more elements
Dependencies are inferred from the claim text.