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Title:
BLADES FOR DIGGING ASSEMBLIES, RELATED APPARATUSES AND METHODS FOR USE THEREOF
Document Type and Number:
WIPO Patent Application WO2001033158
Kind Code:
A3
Abstract:
A blade (12) for a digging assembly comprises a base portion (24) and a terminal portion (26) remote from the base portion (24). The base portion (24) is wider than the terminal portion (26), and the blade tapers in width between the base and terminal portions (24, 26). First, second and third sharpened edges (28, 30, 32) are provided on the blade (12), each having flanks (34) that subtend an angle of at least 90 DEG . Each of the flanks (34) are skewed in relation to the respective flanks (34) of the other edges. The orientation of the flanks (34) of the sharpened edges (28, 30, 32) enables the blade (12) to exhibit a lifting effect when it is rotated through material on an axis in a digging assembly.

Inventors:
FRENCH JOHN ROBERT (GB)
Application Number:
GB0004203W
Publication Date:
September 20, 2001
Filing Date:
November 02, 2000
Export Citation:
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Assignee:
J R FRENCH LIMITED
FRENCH, JOHN, ROBERT
International Classes:
B02C13/04; B02C21/02; B03C1/16; B07B1/10; B65G15/30; B65G39/08; E02F3/24; E02F3/815; E02F5/08; E02F7/02; E02F7/06; E02F9/28; F41H11/16; (IPC1-7): F41H11/16
Domestic Patent References:
WO2000045119A12000-08-03
WO1996037751A11996-11-28
Foreign References:
GB827999A1960-02-10
EP0288024A21988-10-26
GB2066698A1981-07-15
DE19724753A11998-12-10
DE4439617C11996-02-15
EP0420731A11991-04-03
US2679200A1954-05-25
US2467619A1949-04-19
US4324056A1982-04-13
GB1207400A1970-09-30
US1648637A1927-11-08
GB2269410A1994-02-09
DE19626668A11998-01-08
DE29519133U11996-04-25
Other References:
PATENT ABSTRACTS OF JAPAN vol. 010, no. 242 (M - 509) 21 August 1986 (1986-08-21)
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