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, 1979
Filed:
Mar. 17, 1977
Fa. C. Stiefelmayer K.G., Esslingen, DE;
Abstract
A measuring and/or tracing device is of the kind having a vertical column, a transverse sliding unit secured to the column and movable in a vertical direction, a cross arm held by said unit and movable horizontally, a holder on the end of the said cross arm for a measuring and/or tracing tool, and a counterweight to balance the transverse sliding unit, said counterweight being disposed inside the column so that it can move freely and being attached to the transverse sliding unit by a cable passing over a guide roller at the upper end of the column. The improvement comprises a safety braking device attached to the transverse sliding unit and acting in conjunction with external surfaces of the column, to which braking device the cable is secured, and which in consequence of the cable tension exerted, is held in a disengaged position out of contact with the outer surfaces of the column, but which, when the cable tension falls, drops automatically into the braking position and engages with the outer surfaces of the column, thereby preventing movement.