Flexible plastic return way for conveyor chains

- Valu Engineering, Inc.
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Description

FIG. 1 is a partial isometric view of a flexible plastic return way for conveyor chains, embodying my new design;

FIG. 2 is an end view of either end thereof;

FIG. 3 is a side view of either side thereof; and,

FIG. 4 is a bottom view thereof.

The claimed article is partially shown to indicate indeterminate length.

Referenced Cited
U.S. Patent Documents
D27757 October 1897 Bradley
D135948 July 1943 Caplan
D231592 May 1974 Vihma
D274559 July 3, 1984 Rosner
D285685 September 16, 1986 Winegard et al.
D287082 December 9, 1986 Gambon
D327747 July 7, 1992 Wilkening
3964800 June 22, 1976 Grimes et al.
4325480 April 20, 1982 Butt
4492303 January 8, 1985 Foster
5054605 October 8, 1991 Bovis
Other references
  • 1989 Catalog No. 10 by Marbett.RTM. entitled "Conveyor Components," relating to wear strips and spacers. Engineering Manual by Rexnord relating to table top chains. WP Series Moulding Patterns, 1967, p. 7, Moulding item WP 217 on right side of page. Sweets Catalog, 1984, p. 3, Mouldings, item 28, located at top of page. Sweet Catalog, 1984, p. 2, Mouldings item 13, located near bottom of page. Methods & Materials of Residential Construction, 1981, p. 238, moulding, item 1, located at top of page. New Equipment Digest, Jun. 1990, p. 103, plastic guide rails, located at right side of page.
Patent History
Patent number: D336712
Type: Grant
Filed: Nov 9, 1990
Date of Patent: Jun 22, 1993
Assignee: Valu Engineering, Inc. (Irvine, CA)
Inventor: Stuart J. Ledingham (Coto de Caza, CA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: H. Baynham
Law Firm: Knobbe, Martens, Olson & Bear
Application Number: 7/611,362
Classifications
Current U.S. Class: Belt Or Roller Conveyor (D34/29)