Gravel scarifying and levelling device

Details Gravel scarifying and levelling device Gravel scarifying and levelling device

1991-06-13

1993-11-30

Bui, Thuy M.

Road structure, process, or apparatus

Apparatus

With surface marking

404 76, 299 38, 172197, E01C 1912, E01C 1922, E21B 4902, E21C 4700

Patent

active

052659755

ABSTRACT:
A scarifier comprises a plurality of supported, downwardly depending, axially secured scarifying teeth supported on a scarifying-tooth supporting frame connected in loose fitting relation to a tractor to thereby operatively impart a first component of lateral play at respective scarifying tip ends. The frame also includes a bracket engaging respective shank portions of the scarifying teeth en axially secured relation with sufficient degrees of lateral freedom to provide a second component of lateral play to spaced apart scarifying points of respective ones of those teeth.

REFERENCES:
patent: 2116468 (1938-05-01), Cost
patent: 3430703 (1969-03-01), Richey
patent: 3448814 (1969-06-01), Bentley et al.
patent: 3470964 (1969-10-01), West et al.
patent: 3638539 (1972-02-01), Lewis
patent: 3685404 (1972-08-01), Rich et al.
patent: 3870427 (1975-03-01), Allen
patent: 4041623 (1977-08-01), Miller et al.
patent: 4359103 (1982-11-01), Heitman
patent: 4601605 (1986-07-01), Damp et al.
patent: 4924945 (1990-05-01), Mork

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