Retractable surgical knife

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Description

FIG. 1 is a front and top perspective view of a rectractable surgical knife showing my 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;

FIG. 7 is a back elevational view thereof; and,

FIG. 8 is a front and top perspective view thereof, with the blade in retracted position.

Referenced Cited
U.S. Patent Documents
D263020 February 16, 1982 Rau, III
D333418 February 23, 1993 Thompson et al.
2446044 July 1948 Davis
2905146 September 1959 Johmann
3144005 August 1964 Johmann
3217410 November 1965 Matwijcow
3657812 April 1972 Lee
3885308 May 1975 Gordin
3906626 September 1975 Riuli
4660287 April 28, 1987 Decker
5071426 December 10, 1991 Dolgin et al.
5116351 May 26, 1992 Frassetti
5139507 August 18, 1992 Dolgin et al.
5141517 August 25, 1992 Shutt
5250063 October 5, 1993 Abidin et al.
5292329 March 8, 1994 Werner
Patent History
Patent number: D359356
Type: Grant
Filed: Dec 3, 1993
Date of Patent: Jun 13, 1995
Inventor: Richard S. Werner (Minneapolis, MN)
Primary Examiner: A. Hugo Word
Assistant Examiner: I. Simmons
Law Firm: Merchant, Gould, Smith, Edell, Welter & Schmidt
Application Number: 0/16,028