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:
May. 15, 1979
Filed:
Jan. 16, 1978
Thomas J Briar, Trafford, PA (US);
Walter J Reese, North Huntington, PA (US);
PPG Industries, Inc., Pittsburgh, PA (US);
Abstract
A collet for winding strand material, such as glass strands, is disclosed. The collet is capable of expanding under fluid pressure to firmly grasp a tube on which the strand material is wound. The collet comprises a sealed chamber into which the fluid enters under pressure, a piston which is movable by the fluid pressure, expandable rings and inexpandable spacers between the rings and at the end of the set of rings opposite the piston; the piston, rings, and spacers being located along a common shaft and arranged such that fluid entering the chamber forces the piston towards the rings and spacers creating pressure on the expandable rings and expanding them to firmly grasp the covering tube.