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:
Oct. 04, 1977
Filed:
Aug. 13, 1976
Applicant:
Inventors:
Bengt Gunnar Egerstrom, Danderyd, SW;
Bror Lennart Sternhoff, Stockholm, SW;
Assignee:
Nitro Nobel AB, Gyttorp, SW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ;
U.S. Cl.
CPC ...
226162 ; 166 77 ; 86 2 / ;
Abstract
The apparatus includes two clamping devices mounted for vertical reciprocation one above the other, and having registering central apertures through which a flexible tube is adapted to be advanced. Each clamp contains a flexible sleeve disposed to surround the tube and selectively to be pressed into gripping engagement with it by means of a fluid pressure medium. This medium is also used to reciprocate the clamps alternately toward and away from each other, with only one clamp at a time being actuated so that the tube is advanced (e.g. fed upwardly) first by one and the other of the clamps.