Retractable blade utility knife
Description
FIG. 1 is a perspective view of a retractable blade utility knife, with the blade in a retracted position, showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a right end elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a left end elevational view thereof;
FIG. 7 is a bottom elevational plan view thereof; and,
FIG. 8 is a perspective view of a retractable blade utility knife, with the blade extended to a position of use relative to the knife handle.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
D240500 | July 1976 | Richards |
D249325 | September 12, 1978 | Kollband |
D286974 | December 2, 1986 | Veverka |
D290333 | June 16, 1987 | Pashley |
D293202 | December 15, 1987 | West et al. |
D296297 | June 21, 1988 | Weimann et al. |
D303089 | August 29, 1989 | Roberts |
D305096 | December 19, 1989 | Tench et al. |
D310475 | September 11, 1990 | Weimann |
D319378 | August 27, 1991 | Wilcox |
4005525 | February 1, 1977 | Gringer |
4139939 | February 20, 1979 | Crooks |
4320576 | March 23, 1982 | Beermann |
4517741 | May 21, 1985 | Castelluzzo |
4586256 | May 6, 1986 | Weimann |
4621425 | November 11, 1986 | Stoutenberg |
4761882 | August 9, 1988 | Silverstein |
4805304 | February 21, 1989 | Knoop |
4897920 | February 6, 1990 | Dunbar |
4930218 | June 5, 1990 | Jacoff |
4936014 | June 26, 1990 | Shaanan et al. |
4939839 | July 10, 1990 | Gorst |
4941260 | July 17, 1990 | Castelluzzo |
5005290 | April 9, 1991 | Gilbert |
2704019 | March 1978 | DEX |
Patent History
Patent number: D336029
Type: Grant
Filed: Sep 9, 1991
Date of Patent: Jun 1, 1993
Assignee: The Lutz File & Tool Co. (Cincinnati, OH)
Inventors: H. Nicholas Ragland (Cincinnati, OH), James F. Mariol (Cincinnati, OH)
Primary Examiner: Bernard Ansher
Assistant Examiner: Philip Hyder
Law Firm: Killworth, Gottman, Hagan & Schaeff
Application Number: 7/756,773
Type: Grant
Filed: Sep 9, 1991
Date of Patent: Jun 1, 1993
Assignee: The Lutz File & Tool Co. (Cincinnati, OH)
Inventors: H. Nicholas Ragland (Cincinnati, OH), James F. Mariol (Cincinnati, OH)
Primary Examiner: Bernard Ansher
Assistant Examiner: Philip Hyder
Law Firm: Killworth, Gottman, Hagan & Schaeff
Application Number: 7/756,773
Classifications
Current U.S. Class:
D 8/99