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:
Jun. 27, 1978
Filed:
Nov. 17, 1976
Claus Prochnow, Brunswick, DT;
Rollei-Werke Franke & Heidecke, Brunswick, DT;
Abstract
A device for displacing a body along a guiding column which is particularly suitable for the projection head of an enlarging or reproducing apparatus. The device comprises in a conventional manner a guiding column and, on the body, a friction wheel which presses against the column and which is disposed on a shaft. The shaft of the friction wheel is mounted in the sleeve-like body which surrounds the column except in the vicinity of the friction wheel. The friction wheel is sub-divided into two wheel portions and means are provided for exerting a force upon the wheel portions along the axis of the friction wheel. These means act upon a guiding surface of the column disposed at an angle of up to 90.degree. with respect to the friction wheel axis.