Friction rock stabilizer
Description
FIG. 1 is a perspective view of a friction rock stabilizer showing my design;
FIG. 2 is a right side elevational view of the design of FIG. 3;
FIG. 3 is back elevational view of the design of FIG. 1;
FIG. 4 is a left side elevational view of the design of FIG. 3;
FIG. 5 is a front elevational view of the design of FIG. 1;
FIG. 6 is a top plan view of FIG. 3; and,
FIG. 7 is a bottom plan view of FIG. 3.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
4069677 | January 24, 1978 | Yamada et al. |
4316677 | February 23, 1982 | Ciavatta |
4322183 | March 30, 1982 | Ciavatta |
4650373 | March 17, 1987 | Seegmiller |
4661022 | April 28, 1987 | Seegmiller |
4666345 | May 19, 1987 | Seegmiller |
4954017 | September 4, 1990 | Davis et al. |
514153 | December 1980 | ATX |
Patent History
Patent number: D340176
Type: Grant
Filed: Dec 9, 1991
Date of Patent: Oct 12, 1993
Inventor: Thomas J. Landsberg (Princeton, NJ)
Primary Examiner: Alan P. Douglas
Assistant Examiner: J. H. Musgrove
Attorney: John J. Selko
Application Number: 7/805,709
Type: Grant
Filed: Dec 9, 1991
Date of Patent: Oct 12, 1993
Inventor: Thomas J. Landsberg (Princeton, NJ)
Primary Examiner: Alan P. Douglas
Assistant Examiner: J. H. Musgrove
Attorney: John J. Selko
Application Number: 7/805,709
Classifications
Current U.S. Class:
D 8/70