The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 1984
Filed:
Apr. 27, 1981
Wolfgang Fehrenbacher, St. Georgen, DE;
Hans Heinzelmann, Schramberg, DE;
Erich Scheer, St. Georgen, DE;
Kieninger & Obergfell, St. Georgen, DE;
Abstract
An alarm clock has a cambered leaf spring traversed by a nest of clock-hand shafts projecting from a mounting plate designed as a printed-circuit board. The leaf spring is supported at opposite ends by posts rising from the mounting plate and is limitedly swingable about a centerline parallel to that plate and perpendicular to the axis of the nested shafts. A toothed control disk centered on the same axis, with a hub carrying an alarm hand, is axially shiftable under pressure of the cambered leaf spring upon alignment of a tooth on that disk with a notch in an adjoining hour wheel; two diametrically opposite metallic contacts formed by lateral tongues on that spring then engage respective countercontacts on the mounting plate to close a circuit for the emission of an acoustic alarm signal. The alarm circuit can be broken by a manually displaceable interrupter lifting one of these tongues off its countercontact; with a modified alarm circuit, closure of one or the other contact pair can be selectively inhibited to enable the alternative operation of a buzzer or of a radio receiver upon displacement of the control disk by the leaf spring.