Keyless drill chuck

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FIG. 1 is a front perspective view of the keyless drill chuck of the present invention;

FIG. 2 is a rear perspective view;

FIG. 3 is a side elevational view, the top and bottom views being identical and the rear side elevation view a mirror image thereof;

FIG. 4 is a front end view; and,

FIG. 5 is a rear end view.


The ornamental design for a keyless drill chuck, as shown and described.

Referenced Cited
U.S. Patent Documents
D366052 January 9, 1996 Barton et al.
5765839 June 16, 1998 Rohm
D402675 December 15, 1998 Long
D416461 November 16, 1999 Long
6007071 December 28, 1999 Middleton
D421615 March 14, 2000 Argo et al.
D423527 April 25, 2000 Sakamaki
D426760 June 20, 2000 Schultz
D427216 June 27, 2000 Miles et al.
D433909 November 21, 2000 Long
D434629 December 5, 2000 Long
D436511 January 23, 2001 Hayakawa et al.
Patent History
Patent number: D472443
Type: Grant
Filed: Nov 5, 2001
Date of Patent: Apr 1, 2003
Assignee: TechTronic Industries Co., LTD (Hong Kong)
Inventors: Daniel A. Chunn (Hong Kong), Meily Siu Mei Chan (Hong Kong), Felix Hei Shun Leung (Hong Kong)
Primary Examiner: Doris V. Coles
Assistant Examiner: T. Chase Nelson
Attorney, Agent or Law Firms: John B. Hardaway, III, Nexsen Pruet Jacobs & Pollard, LLC
Application Number: 29/150,470
Current U.S. Class: D8/70
International Classification: 0805;