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:
Jul. 09, 1996
Filed:
Apr. 25, 1994
Nigel D Williamson, Fort Wayne, IN (US);
NWD International, Inc., Morencie, MI (US);
Abstract
The present invention relates to an improved hydraulic coupling which forms contact seals to fluidly connect a tapered port with a tube having a threaded connecting portion. The contact seals may be metal-to-metal seals, or alternatively may include a resin polymer element. The invention provides a fluid coupling for a tube which is transverse to the port, allowing for flow redirection in the coupling similar to the flow redirection in prior art 'banjo' couplings. The body of the port includes a lip which deforms on the inner tapered surface of the fitting, and the fitting also includes an inner tapered surface on which a rim of the bolt contacts, thereby providing a contact seal at both potential leak points. The lipped port may also be provided by a collar disposed between the port and the fitting. Optionally, o-rings may be added to provide additional seals. The present invention may be designed not to seal without the application of tool generated torques.