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:
Aug. 30, 1983
Filed:
Apr. 13, 1981
Klaus Arndt, Zurich, CH;
Contraves AG, Zurich, CH;
Abstract
An apparatus for the locking of a component or part free of play, especially a drive shaft in a null position, but also other elements, such as a machine part. The drive shaft can be rotated about its lengthwise axis and positioned in a predetermined rotational position. In the null position the drive shaft provided with an impact or contact element is locked by means of a first locking element constructed as a hard layer and a second locking element constructed as a resilient contact or impact member, each of which locking elements are rotatable into the rotational plane of the drive shaft. The drive shaft is locked by the locking elements in such a manner that the first locking element and the contact or impact element attached to the drive shaft as well as the second displaceably mounted locking element are successively acted upon or contacted by the action of the restoring force of a spring which is effective at the second locking element. The locking apparatus renders possible, particularly for adjusting the optical axes, an axactly reproducible essentially play-free locking of the drive shaft provided, for instance, for the azimuth or elevational movement of a sighting or aiming device of an observation periscope arranged above a armoured vehicle roof or cover arrangement of a combat vehicle or the like.