Refining plate

Description

FIG. 1 is a perspective view of a refining plate showing our new design;

FIG. 2 is a right side elevational view;

FIG. 3 is a left side elevational view;

FIG. 4 is a radially outer end elevational view;

FIG. 5 is a radially inner end elevational view;

FIG. 6 is a top plan view; and,

FIG. 7 is a bottom plan view.

Referenced Cited
U.S. Patent Documents
D232460 August 1974 Sandstrom
D232462 August 1974 Sandstrom
D232463 August 1974 Sandstrom
D232464 August 1974 Sandstrom
D232468 August 1974 Sandstrom
D232470 August 1974 Sandstrom
D232471 August 1974 Sandstrom
827059 July 1906 Davis
874764 December 1907 Halstead
4274602 June 23, 1981 Johansson
4635864 January 13, 1987 Peterson et al.
4953796 September 4, 1990 Virving
Foreign Patent Documents
8806490 September 1988 WOX
Patent History
Patent number: D342745
Type: Grant
Filed: Jul 27, 1992
Date of Patent: Dec 28, 1993
Assignee: Sunds Defibrator Industries Aktiebolag
Inventors: Christer Nastren (Upplands Vasby), Lennart Rohden (Enskede)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Antoine D. Davis
Law Firm: Lerner, David, Littenberg, Krumholz & Mentlik
Application Number: 7/920,045
Classifications
Current U.S. Class: Element Or Attachment (D15/126)