Power concrete hammer
Latest Ryobi Ltd. Patents:
Description
FIG. 1 is a front, top, and right side perspective view of a power concrete hammer showing our new design;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a front elevational view thereof; and
FIG. 7 is a rear elevational view thereof.
Referenced Cited
U.S. Patent Documents
Other references
D242427 | November 1976 | Wilsgaard |
2518395 | August 1950 | Sopris |
2533487 | December 1950 | Maurer et al. |
3837409 | September 1974 | Consoli et al. |
- Popular Mechanics, May 1987, p. 42, SKIL Concrete Buster.
Patent History
Patent number: D301967
Type: Grant
Filed: Jul 22, 1986
Date of Patent: Jul 4, 1989
Assignee: Ryobi Ltd. (Hiroshima)
Inventors: Masakazu Sakamoto (Tokyo), Toshiaki Saito (Tokyo)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: Clare E. Heflin
Law Firm: Sughrue, Mion, Zinn, Macpeak & Seas
Application Number: 6/887,853
Type: Grant
Filed: Jul 22, 1986
Date of Patent: Jul 4, 1989
Assignee: Ryobi Ltd. (Hiroshima)
Inventors: Masakazu Sakamoto (Tokyo), Toshiaki Saito (Tokyo)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: Clare E. Heflin
Law Firm: Sughrue, Mion, Zinn, Macpeak & Seas
Application Number: 6/887,853
Classifications
Current U.S. Class:
D 8/67;
D 8/61;
D 8/69