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:
Jan. 06, 1987
Filed:
Oct. 29, 1985
Darwin L Ellis, Richmond, IN (US);
Frank M Kelly, Richmond, IN (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
A capping head for screwing a prethreaded closure onto a container provided with a screw thread. The capping head includes a housing adapted to be secured to a rotatable drive spindle and having a bore formed therein which is open at one end. A quill is mounted in the housing for free rotation therewith. The quill contains two radial bores which house a pair of poppet valves. The capping head also includes a torque-dependent clutch having a drive plate secured to the housing and a driven plate secured to the quill. The clutch is constructed such that it will stop screwing a prethreaded closure onto a container once a desired, predetermined torque value is reached. A chuck is attached to the driven plate and is fluidly activated between an open and closed position by the poppet valves. An activating arm is also present which is attached to the quill and cooperates with a cam formed on an inner peripheral surface of the housing to selectively operate the poppet valves when the torque value between the drive plate and the driven plate exceeds the desired, predetermined value.