Games using tangible projectile – Playing field or court game; game element or accessory... – Practice or training device
Reexamination Certificate
2007-02-20
2007-02-20
Aryanpour, Mitra (Department: 3711)
Games using tangible projectile
Playing field or court game; game element or accessory...
Practice or training device
C473S454000, C473S422000, C273S371000
Reexamination Certificate
active
11119194
ABSTRACT:
An air mattress has a resilient front panel, an opposed rear panel and at least one interior panel extending therebetween dividing the mattress into ball and strike chambers. A ball air valve attached to the rear panel at the ball chamber activates in response to a predetermined pressure increase in the chamber occurring in response to deflection of the front panel at the ball chamber. A strike air valve attached to the rear panel at the strike chamber activates in response to a predetermined pressure increase in the chamber occurring in response to deflection of the front panel at the strike chamber. Signaling devices alert when a strike or ball air valve activates informing a user whether a pitch is a ball or a strike.
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Aryanpour Mitra
James John L.
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