Patent ID: 8156901

Claim:
A pet restraint system, comprising: a flexible collar having first and second ends and a plurality of holes therebetween; a fastener configured to selectively secure together said first and second collar ends to present an adjustable circumference for encircling a portion of a pet, said fastener including: a pin configured to respectively interact with said holes to secure said adjustable collar circumference in a plurality of respective positions; a clasp configured to secure said pin when at a first position and release said pin when at a second position; and an outer casing movable between a closed configuration enclosing said clasp and an open configuration exposing said clasp; a lock configured to restrict separation of said first and second collar ends, said lock being operatively coupled to said outer casing to restrict movement of said outer casing from said closed configuration to said open configuration; wherein said clasp is movable to said second position only when said outer casing is at said open configuration; a radio transmitter coupled to said collar that emits a signal at a predetermined frequency; a handheld unit separated from said collar and including: a radio receiver configured to receive a radio signal; a GPS receiver adapted to receive signals from global positioning satellites; a signal indicator; a central processing unit (CPU) in data communication with said radio receiver, said GPS receiver, and said signal indicator; wherein said CPU includes programming for evaluating a relative strength of signals received by said radio receiver; wherein said CPU includes programming to output said relative strength to said signal indicator indicative of a position of said signal transmitter relative to said handheld unit.