Retractable blade knife
United States Patent D354900

Hirai, Kikuji (Osaka, JP)
Application Number:
Publication Date:
Filing Date:
NT Incorporated (Osaka, JP)
Primary Class:
Field of Search:
D8/98, D8/99, D8/107, D22/118, 30/162, 30/320, 30/329, 30/335, 30/337
View Patent Images:
US Patent References:
D324475Retractable blade knifeMarch, 1992Staubitz et al.D8/99
4615118Magazine type knifeOctober, 1986Ihata30/162
D264799Cutter knifeJune, 1982OsadaD8/99
D264800Cutter knifeJune, 1982OsadaD8/99
D264802Cutter knifeJune, 1982OsadaD8/99
D264803Cutter knifeJune, 1982OsadaD8/99
D263277Knife with breakable bladesMarch, 1982GregoireD8/99
4240202Replaceable blade knifeDecember, 1980Gilbert30/162
4233734Retractable blade knifeNovember, 1980Bies30/162
4226020Knife and blade advance and locking mechanism thereforOctober, 1980Quenot et al.30/320
3448518KNIFEJune, 1969Sklar30/162

Primary Examiner:
Ansher, Bernard
Assistant Examiner:
Hyder, Philip
Attorney, Agent or Firm:
Griffin Butler Whisenhunt & Kurtossy
1. The ornamental design for a retractable blade knife, as shown anddescribed.


FIG. 1 is a perspective view of a retractable blade knife showing my new design with the blade in a retracted position;

FIG. 2 is a top plan view thereof with the blade in an extended position;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a front elevational view thereof with the blade in an extended position; and,

FIG. 7 is a rear elevational view thereof with the blade in an extended position.