Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc.
Reexamination Certificate
2009-04-15
2011-11-08
Estremsky, Gary (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Impact driven fastener, e.g., nail, spike, tack, etc.
C411S922000
Reexamination Certificate
active
08052365
ABSTRACT:
A pushpin device of one embodiment preferably comprises a head adapted to allow a user to apply pressure to the head without discomfort. A longitudinally extending fastening member comprises a point at a distal end and is coupled to the head at a proximal end. A base comprises an aperture. The aperture is configured to allow the fastening member to pass through the base as the head moves proximate to the base. An outer member is coupled to the head and the base. The outer member comprises a first position in which the head is spaced from the base and the outer member encloses a longitudinal segment of the fastening member. In a second position the head is proximate to the base and the outer member is deformed, thereby allowing the fastening member to extend through the aperture. The outer member exerts a countering force on the base and the head. One of the head and the base comprises magnetically susceptible material and the other comprises magnetic material. A magnetic force between the head and the base maintains the outer member in the second position in opposition to the countering force.
REFERENCES:
patent: 1857158 (1932-05-01), Maloney
patent: 4005507 (1977-02-01), Yamazaki
patent: 7004705 (2006-02-01), Stanley
patent: 2008/0005873 (2008-01-01), Barton et al.
patent: 2010/0000057 (2010-01-01), Wang
Enlisted Design, LLC
Estremsky Gary
Knobbe Martens Olson & Bear LLP
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