Power hammer drill

- Ryobi Ltd.
Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a front, top and right side perspective view of a power hammer drill showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational 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
D301967 July 4, 1989 Sakamoto et al.
Foreign Patent Documents
660420 September 1985 JPX
Other references
  • Kango Electric Hammers Catalog, 10/85, p. 3, Model No. 422, "Drilling Hammer". Red Head Flyer, 10/75, Model No. 747, "Anchoring System". HAC New Products, one page, 2/71, top figure, Hilti Hammer Drill, "Model No. TE-17".
Patent History
Patent number: D310936
Type: Grant
Filed: Mar 8, 1988
Date of Patent: Oct 2, 1990
Assignee: Ryobi Ltd. (Hiroshima)
Inventors: Toshiaki Saito (Tokyo), Shintaro Hara (Hiroshima)
Primary Examiner: Winifred E. Herrmann
Assistant Examiner: John Warchol
Law Firm: Sughrue, Mion, Zinn, Macpeak & Seas
Application Number: 7/165,677
Classifications
Current U.S. Class: D 8/67; D 8/69