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:
Sep. 07, 1976
Filed:
Mar. 14, 1975
Larry N Pearce, Oak Park, IL (US);
Arthur E Neumann, Winnetka, IL (US);
Ralph K Wyssling, Glenview, IL (US);
Cotton Incorporated, New York, NY (US);
Abstract
A thin sheet metal orifice plate is disclosed having at least one orifice therethrough with a rounded inlet to improve flow and an outlet defined by an encircling projection whose axis accurately conforms to a predetermined direction. Apparatus for the production of such an orifice plate is disclosed and includes a forming tool operable to form a spherical boss in a flat intermittently advanced thin metal sheet of orifice blank material. The apparatus includes an orifice plate blank trimming tool having a punch and die assembly for accurately trimming the spherical boss from a continuous strip such that an annular flange is provided therearound. An orifice punching apparatus is provided having a chuck for holding an orifice plate blank adjacent to a resilient backing material. The chuck is supported by an angular adjustment apparatus which, in turn, is rotatably supported on a base and provided with a pair of detent mechanisms. The detent mechanisms secure the angular position of the adjustment apparatus. A horizontally reciprocable punch is aligned with its longitudinal axis passing through a locus of curvature of an orifice blank when carried by the chuck. The punch is provided with a vertical adjustment apparatus to locate the punch with respect to the orifice plate blank and a punch penetration adjustment to stop the reciprocable movement of the punch at a predetermined point while determining the diameter of the orifice punched.