Patent ID: 7137359

Claim:
A pressure responsive estrus detector adapted to be secured to a first animal in a position to be contacted by a mounting animal for indicating when the first animal is in heat, the detector comprising: a housing having first and second oppositely disposed side walls; a first interior wall disposed within said housing and connected to said first side wall to create a first fluid chamber, said first side wall having a top and a bottom and an aperture disposed adjacent said top; a second interior wall disposed within said housing and connected to said second side wall to create a second fluid chamber, said second interior wall disposed adjacent to said first interior wall, said second interior wall having a top and bottom aligned with said top and said bottom of said first interior wall, and said second interior wall having an aperture disposed adjacent said bottom; and fluid disposed within said housing and flowable between said first and said second fluid chambers via said first and said second interior wall apertures by pressure applied to one of said side walls by the mounting animal.