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. 18, 2000
Filed:
Sep. 15, 1998
Toru Kouda, Tokyo, JP;
Nitto Kohki Co., Ltd., Tokyo, JP;
Abstract
A pipe coupling improved in operational and functional characteristics is provided. As an outer sleeve 1 is moved backward, an inner sleeve 9 comes into engagement at its locking balls 62 with the outer sleeve 1 and retracts together with the outer sleeve 1. A slide holder 8 remains urged backward by the inner pressure until the inner pressure drops down to a specific level, thus holding the locking balls 61 in a socket 4 at their radial outward position. As the locking balls 61 interrupt the backward movement of the inner sleeve 9, the outer sleeve 1 is prevented from further moving backward. While the inner sleeve 9 is paused, it interrupts the radial movement of locking balls 63. This permits the locking balls 63 to partially project into the inner side of the socket 4 and come into engagement with an outer groove 200b provided in the outer surface of a plug 200 which is thus locked and not removed out.