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:
Nov. 07, 1989
Filed:
Oct. 19, 1988
Applicant:
Inventors:
Assignee:
Nifco Inc., Yokohama, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16B / ; F16B / ;
U.S. Cl.
CPC ...
411 55 ; 411 41 ; 411 59 ;
Abstract
A coupler for coupling together plates includes a male member having a head and a pin-like portion having male threads and depending from the lower surface of the head and a female member having a flange facing the head of the male member, a leg portion depending from the lower end of the flange and a bore extending from the upper surface of the flange into the leg portion and capable of receiving the pin-like portion of the male member. An upper portion of the inner periphery of the bore is provided with a helical ridge.