Pneumatic jack
OwnerAnthony R. Fratoni, Jr.inventor
Life of this patent
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Abstract
A pneumatic jack energized from a container having a pressurized gas therein for rapidly and effortlessly lifting an object such as a motor vehicle including an automobile, a van, and a truck for one purpose of changing a tire that has gone flat is disclosed. The pneumatic jack has a housing with a piston slideably disposed in a chamber therein cooperating with a lifting element, a hose connected between the housing and the container, a gas fill valve and a throttle valve for controlling the pressure to the piston for raising and for maintaining the lifted object in an elevated position and a handle pivotally connected to the housing for manipulating the pneumatic jack for placement under the motor vehicle.
Claims9
A pneumatic jack comprising:
- a housing having a passageway operationally cooperating with a chamber therein;
- a cover removably attached to said housing;
- a piston slideably disposed within the chamber;
- a lifting element disposed above said cover for engagement with an object to be lifted;
- a rod attached to said piston and to said lifting element;
- said rod freely passing through and guided by a bushing disposed on said cover;
- a handle pivotally attached to and cooperatively engaged with said housing for manipulatively placing said pneumatic jack in an operative position relative to the object to be lifted and for removing said pneumatic jack from the operative position after the object has been lowered;
- and
- means for pneumatically actuating said pneumatic jack to raise and to maintain the object in an elevated position wherein said actuating means includes a container with a gas fill valve and said container having a pressurized gas therein and a nipple connected between said gas fill valve and a throttle valve for introducing the pressurized gas into the passageway and into the chamber via a hose disposed between said throttle valve and said housing adjacent to the passageway.
A pneumatic jack for changing a tire on a motor vehicle, said pneumatic jack comprising:
- a housing having a passageway operationally cooperating with a chamber therein;
- a cover removably attached to said housing;
- a piston slideably disposed within the chamber;
- a lifting element disposed above said cover for engagement with an object to be lifted;
- a rod disposed between said piston and said lifting element;
- said rod fixed to said piston and to said lifting element;
- said rod freely passing through and guided by a bushing disposed on said cover;
- a handle pivotally attached to and cooperatively engaged with said housing for manipulatively placing said pneumatic jack in an operative position relative to the motor vehicle to be lifted so that the tire may be changed and for removing said pneumatic jack from the operative position after the motor vehicle has been lowered and the tire has been changed;
- and
- means for pneumatically actuating said pneumatic jack to raise and to maintain the motor vehicle in an elevated position while the tire is being changed wherein said actuating means includes a container with a gas fill valve and said container having a pressurized gas therein and a nipple connected between said gas fill valve and a throttle valve for introducing the pressurized gas into the passageway and into the chamber via a hose disposed between said throttle valve and said housing adjacent to the passageway.
Dependencies are inferred from the claim text.