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. 16, 2002
Filed:
May. 31, 2000
Gail M. Cunningham, Oxford, MI (US);
Dana Corporation, Toledo, OH (US);
Abstract
A pressure fluid conduit coupling fitting and method of making same, wherein the nipple tube fitting shank is made of specially grooved rigid material. A conventional elastomeric hose conduit having an open end telescopically receives the grooved fitting shank, and a conventional crimp-collar is sleeved over and shrunk-deformed onto the hose open end to permanently sealably secure the coupled conduit connection. An external circumferential surface of the fitting shank has one or more circumferentially continuous sharp edge external grooves of a shallow depth and predetermined width that are defined by the shank ribs formed between the grooves. The junction of the groove sidewalls with the respectively adjacent shank rib surface defines a circumferentially continuous sharp edge formed generally as a 90° junction of these groove sidewalls and rib surface, plus or minus a few degrees. These specially contoured sharp edge, shallow depth external grooves enhance the fluid sealing capacity (pressure rating) of the coupling connection while reducing the magnitude of collar shrink crimping required, and minimize the chances of hose damage because of over-crimping.