Patent ID: 7600796

Claim:
A vent stop for preventing and allowing relative movement of a sliding member, said vent stop comprising: a housing, said housing including a cavity, formed by a top plate, a front wall and a rear wall and a first and second sidewall joining said front and rear wall and extending from said top plate; a tumbler disposed in said cavity, said tumbler having a first end and a second end; a pivot means for pivotally securing said first end of said tumbler to said housing for movement between an extended position and a retracted position within said cavity; a spring for biasing said tumbler into said extended position; a release member that has a first position for causing said tumbler to be in said extended position, and a second position for causing said tumbler to be retained in said retracted position; said release member comprising a head piece and an arm piece extending from said head piece, said arm piece having a front surface and a rear surface, a protruding member on said front surface, said protruding member being received by a recess in said front face of said tumbler when said tumbler is in said retracted position to hold said tumbler in said retracted position, said rear surface having a pin extending therefrom; said release member maintained in said recess by a second spring, and wherein said release member is movable in a direction toward said sliding member to cause release of said tumbler from said retracted position.