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Spade-type boring bit having chamfered corner portions
D394663 Spade-type boring bit having chamfered corner portions
Patent Drawings:Drawing: D394663-3    Drawing: D394663-4    
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(2 images)

Inventor: Stone, et al.
Date Issued: May 26, 1998
Application: D/052,134
Filed: March 25, 1996
Inventors: Adams; Richard Alan (Timonium, MD)
McKenna; Chris (Baltimore, MD)
McKenzie; Timothy T. (Baltimore, MD)
Stone; Paul Andrew (Glen Rock, PA)
Thomas; Rickey James (Lineboro, MD)
Assignee: Black & Decker Inc. (Newark, DE)
Primary Examiner: Davis; Antoine Duval
Assistant Examiner:
Attorney Or Agent: The Bell Seltzer Intellectual Property Law Group of Alston & Bird LLP
U.S. Class: D15/139
Field Of Search: D15/139; 408/211; 408/213; 408/225; 408/230
International Class:
U.S Patent Documents: 85107; D240263; D278065; D372485; D376809; 606319; 1004902; 1483082; 1595588; 2332295; 2543206; 2627292; 2681673; 2692627; 2782824; 2883888; 2962066; 3824026; 3920350; 3997279; 4012970; 4050841; 4286904; 4620822; 4625593; 4682917; 4753558; 4759667; 4950111; 5056967; 5061127; 5099933; 5145018; 5149234; 5184689; 5193951; 5221166; 5286143; 5291806; 5433561; 5452970
Foreign Patent Documents: 1097104; 0118806; 2617-753A; 2636-182; 2130935; 2271948
Other References:









Abstract:
Claim: The ornamental design for a spade-type boring bit having chamfered corner portions, as shown and described.
Description: FIG. 1 is a front perspective view of a first embodiment of a spade-type boring bit having chamfered corner portions embodying our new design;

FIG. 2 is a rear elevational view thereof, taken from the side opposite that illustrated in FIG. 1;

FIG. 3 is a side elevational view thereof, taken from the side opposite that illustrated in FIG. 1;

FIG. 4 is a slightly enlarged top plan view thereof;

FIG. 5 is a slightly enlarged bottom plan view thereof;

FIG. 6 is a front perspective view of a second embodiment of our new design;

FIG. 7 is a rear elevational view thereof, taken from the side opposite that illustrated in FIG. 6;

FIG. 8 is a side elevational view thereof, taken from the side opposite that illustrated in FIG. 6;

FIG. 9 is a slightly enlarged top plan view thereof; and,

FIG. 10 is a slightly enlarged bottom plan view thereof.

The broken lines in the figures are shown for illustrative purposes only and form no part of the claimed design.

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