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. 12, 1979
Filed:
Feb. 02, 1978
Andre Ruegg, Zurich, CH;
Contraves AG, Zurich, CH;
Abstract
An apparatus for the dosed dispensing of a liquid by means of an injection device equipped with a motor-driven spindle mechanism, a cylinder and a piston, one end of the piston being axially displaceable in the cylinder and the other end being operatively connected with one end of a spindle shaft of the spindle mechanism. At the opposite end of the spindle shaft there is provided a first scale ring connected with the spindleshaft and a second scale ring which engages with the first scale ring. A coupling element connects the second scale ring with an adjustment device, the second scale ring being rotatable and thus adjustable with respect to the first scale ring by axially disengaging or declutching the same. Both of the scale rings are equipped with at least one stop means for limiting the adjustment path of the second scale ring for setting the volume of the liquid to be dispensed or dosed.