Patent ID: 6120258
Filing Date: 2000-09-19
Classification: F04B

Abstract:
A tire pump adapted to be secured on one of a crossbar, a down tube and a seat tube of a bicycle, comprising:an elongated mounting frame adapted to be secured to and extending in a longitudinal direction parallel to at least a portion of said one of the crossbar, the down tube and the seat tube, said mounting frame having first and second ends that are spaced apart from each other in said longitudinal direction;a cylinder having a rear end provided with an outlet and pivotally secured to said second end of said mounting frame, and a front end which is spaced apart from said rear end in a first direction of a first axis and disposed to be proximate to said first end of said mounting frame and with said axis parallel to said longitudinal direction, said outlet being adapted to be fluidly connected to a tire of the bicycle;a piston disposed to reciprocate within said cylinder in said first direction so as to pump air out of said outlet for inflating the tire of the bicycle;a piston rod having a fixed end secured to said piston in said cylinder and a coupling end extending axially and outwardly of said front end of said cylinder;a fixed knuckle member disposed on said coupling end of said piston rod;a movable knuckle member having a proximate end hingedly coupled with said fixed knuckle member about a hinging axis oriented radial to said first axis, and a distal end disposed to swing towards and away from said rear end of said cylinder so as to move said piston to reciprocate within said cylinder; anda lever including a connecting end pivotally mounted on said first end of said mounting frame about a pivoting axis parallel to said hinging axis, a grip portion disposed to be actuated manually to swing towards and away from said second end of said mounting frame about said pivoting axis, and an intermediate portion disposed between said connecting end and said grip portion and coupled with said distal end of said movable knuckle member so as to transmit swinging movement of said grip portion to said movable knuckle member.