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:
Feb. 28, 1989
Filed:
Apr. 18, 1988
Pritimay Sengupta, Berlin, DE;
Ewald Kornmayer, Berlin, DE;
Zeiss Ikon AG, , DE;
Abstract
Locking means for preventing displacement of a displaceable member relative to a stationary member by means of an armature operatively associated with an electromagnet, the armature having a bipartite structure: a locking pin member engageable with the displaceable member and a sleeve member coaxially surrounding the locking pin member located on an end of an armature extending from the electromagnet. A plurality of radially mobile balls interact within bores in a portion of the stationary member extending between the locking pin member and the sleeve member to engage grooves in the locking pin member to lock or secure same in a position in which the locking pin member is engaged with the displaceable member. Selective energization of the electromagnet selectively positions the sleeve member and a groove located within an interior wall of the sleeve member to selectively limit radial movement of the balls. In a deenergized state, the electromagnet permits axial displacement of the locking pin member.