Backhoe-style boom

- Case Corporation
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Description

FIG. 1 is a perspective view of an elongated backhoe-style boom showing my new design which is embodied in less than all of the backhoe-style boom article of manufacture;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a fragmentary bottom plan view thereof;

FIG. 4 is a left side elevational view thereof, the right side elevational view thereof being a mirror image;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a cross-sectional view thereof taken generally along planes 6--6 in FIG. 6.

Referenced Cited
U.S. Patent Documents
D273384 April 10, 1984 Nasu et al.
D294032 February 2, 1988 Whiffin
D312468 November 27, 1990 Masumoto et al.
D319448 August 27, 1991 Ball et al.
3376984 April 1968 Long et al.
3987914 October 26, 1976 VanDerZyl et al.
4074821 February 21, 1978 Long
4272222 June 9, 1981 Davis
4329797 May 18, 1982 Shumaker
4392314 July 12, 1983 Albrecht et al.
4686782 August 18, 1987 Nagatomo
4715771 December 29, 1987 Hanson
4720234 January 19, 1988 Stralow
4735547 April 5, 1988 Wagner et al.
4906160 March 6, 1990 Kaufman et al.
5108253 April 28, 1992 Kobayashi et al.
Foreign Patent Documents
0365679 December 1962 CHX
0988844 April 1965 GBX
Other references
  • Case Accent on Loader/Backhoes Product Sheet dated Dec., 1987, J. I. Case Company, Racine, Wis. Advertisement entitled: "Cat Announces a Boom in Backhoe Loaders", p. 51 of Equipment Today, Aug. 1990. Advertisement of Ford 555C Xtra-Vator, p. 142 of "Equipment Today Showcase '90".
Patent History
Patent number: D339813
Type: Grant
Filed: Jun 18, 1991
Date of Patent: Sep 28, 1993
Assignee: Case Corporation (Racine, WI)
Inventor: Robert L. Houkom (Burlington, IA)
Primary Examiner: Bernard Ansher
Assistant Examiner: Sandra Morris
Law Firm: Rudnick & Wolfe
Application Number: 7/717,122
Classifications
Current U.S. Class: Scraper Blade Or Loader Element (D15/32)