초록 ▼

An apparatus for pressurizing a pneumatic tire mounted on a vehicle wheel which includes a displacement type air pump having a spring loaded piston and cylinder combination for generating air under pressure. The air pump is axially attached to the vehicle wheel and an air pressure connection conduit

An apparatus for pressurizing a pneumatic tire mounted on a vehicle wheel which includes a displacement type air pump having a spring loaded piston and cylinder combination for generating air under pressure. The air pump is axially attached to the vehicle wheel and an air pressure connection conduit introduces air under pressure generated from the pump into the pneumatic tire. A cam and cam follower arrangement is mounted in the housing for the pump for creating relative cam actuated movement therebetween which is utilized for driving the air pump. A pendulum is mounted for free axial rotation relative to the pump housing and the pendulum is connected to one of the cam or cam follower, and the other is secured to the pump housing for rotation therewith to provide this cam actuated driving movement. The axis of piston reciprocation in its cylinder is substantially aligned axially with the wheel axis of rotation. In addition, the cam follower is provided with a ramp tracking surface having points of maximum and minimum rise which dictate the limits of reciprocation of the piston and a step in this cam follower surface is provided which connects the maximum and minimum points of rise for providing a rapid compression stroke of the piston under spring bias.

대표청구항 ▼

An apparatus for pressurizing a pneumatic tire mounted on a wheel adapted for axial rotation, said apparatus comprising: a displacement type air pump including a spring loaded piston and cylinder combination for generating air under pressure; a housing for said air pump adapted for axial attachment

An apparatus for pressurizing a pneumatic tire mounted on a wheel adapted for axial rotation, said apparatus comprising: a displacement type air pump including a spring loaded piston and cylinder combination for generating air under pressure; a housing for said air pump adapted for axial attachment to a wheel having a pneumatic tire mounted thereon; an air pressure connection conduit adapted for introducing air under pressure generated from said pump into the pneumatic tire; a cam mounted in said housing; a cam follower mounted in said housing and engaging said cam for relative cam actuated movement therebetween which is connected for driving said air pump; a pendulum mounted for free axial rotation relative to said housing; said pendulum connected to one of said cam and cam follower and the other thereof secured to said housing for rotation therewith to provide said driving movement; said piston and cylinder combination having an axis of piston reciprocation in said cylinder which is substantially aligned axially with the wheel axis of rotation.