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Class Information
Number: 411/493
Name: Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener > Impact driven fastener, e.g., nail, spike, tack, etc. > Shank or penetrating end structure > End structure
Description: Subject matter wherein significance is attributed to the piercing end of the fastener.

Sub-classes under this class:

Class Number Class Name Patents
411/496 Chisel point 10
411/498 Conical point 9
411/499 Having a curved surface 11
411/494 Pyramidal point 3
411/495 Slotted end 9
411/497 Stepped end 2

Patents under this class:

Patent Number Title Of Patent Date Issued
8616817 Screw nail Dec. 31, 2013
8375549 Method for establishing a nail connection between two non-prepunched components Feb. 19, 2013
7736110 Wire staple for attaching metal sheets Jun. 15, 2010
7398623 Deck board fastener with concave prongs Jul. 15, 2008
6089808 Angled chisel point brad and method therefor Jul. 18, 2000
5826391 Concrete joint and method Oct. 27, 1998
5788444 Fastener assembly for use with a power actuated gun Aug. 4, 1998
5785476 Fastener with soft tip Jul. 28, 1998
5658109 Steel pin and method for its manufacture Aug. 19, 1997
4927309 Wire nail May. 22, 1990
4235148 Connector plate Nov. 25, 1980
4231280 Interpenetrating nailable fastener for sheet metal Nov. 4, 1980
4157677 Self-drilling dowel with drill head Jun. 12, 1979

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