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:
Dec. 04, 1984
Filed:
Jan. 24, 1983
Robert Rasmussen, Minneapolis, MN (US);
Air-Mo Hydraulics Inc., Minneapolis, MN (US);
Abstract
A threaded coupling chuck device for use with a male threaded tube, including a body, a shaft for rotation, a sleeve and adaptor, nose cone, seal means, port means and a valve. The body is centered about an axis and has a sleeve rotably mounted inside the body. This sleeve is driven by the shaft means which rotates the sleeve in a first direction for coupling with the tube and the other direction to uncouple. Fixedly mounted in the sleeve is an adaptor means which has a nose cone supported on it. The nose cone has a threaded portion for forming a coupling with the male threaded tube upon rotation of the shaft in the first direction. The nose cone may also have a tapered surface adjacent the threaded portion to guide the tube into coupling contact with the threads. Seal means are provided generally at all junctions, and particularly for preventing passage of fluid between the tube and the nose cone coupling. The seal means includes means to activate the seal and pneumatic means for urging the seal against the tube threads in the coupling. The seal means may have a threaded annular portion positioned along the threaded portion of the nose cone which is adapted to expand to contact the tube via activation of the pneumatic means. Biasing means may also be provided to maintain the seal in an inactive or non-contacting position until activation to overcome the biasing means. Porting means may be provided to allow detecting means for identifying leaks from said expandable seal. Port means for defining a passage through the body are provided, including an inlet for connection to a source of fluid and an outlet through the adaptor means to the interior of the tube. Finally, valve means are positioned in the passage and are moveable from a first position to permit flow of fluid in the passage and a second position to prevent fluid flow. In one embodiment, the valve includes a pneumatically operated piston to move the poppet and cap from open to closed.