Disc brake piston installation tool
OwnerBasil R. Blakeinventor
Life of this patent
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Abstract
A pneumatically operated disc brake piston installation tool is disclosed for use in installing a piston into the piston bore of a disc brake caliper housing. The tool comprises a first piston engaging plate and a second plate positionable against the inside surface of an outer shoe bracket of the caliper housing. A cylinder extends from the second plate. A piston shaft is centrally attached to the first plate and extends perpendicularly therefrom, passing slidably through an opening in the second plate into the cylinder. In response to pneumatic pressure, the piston shaft is pushed outwardly against the piston to force the piston back into the piston bore of the caliper housing.
Claims8
A pneumatically operated disc brake piston installer comprising:
- A) a first plate positionable within a disc brake caliper housing in contact with an outer edge of an extended disc brake piston;
- B) a second plate in alignment with and spaced apart from the first plate and positionable against an inside surface of an outer shoe bracket of said disc brake caliper housing;
- C) a piston shaft attached to said first plate at a central point thereof and extending perpendicularly therefrom passing slidably through an opening in said second plate into a surrounding cylinder attached to said second plate;
- said piston shaft being controllably moveable in an axial direction in response to pneumatic pressure within said cylinder;
- D) a source of pneumatic pressure adapted for controllably moving said piston shaft out of said cylinder and pushing said first plate in a direction away from said second plate.
A pneumatically operated disc brake piston installer comprising:
- A) a first plate positionable within a disc brake caliper housing in contact with an outer edge of an extended disc brake piston;
- B) a second plate in alignment with and spaced apart from the first plate and positionable against an inside surface of an outer shoe bracket of said disc brake caliper housing;
- C) a piston shaft attached to said first plate at a central point thereof and extending perpendicularly therefrom, passing slidably through an opening in said second plate into a surrounding cylinder attached to said second plate;
- said piston shaft being controllably moveable in one axial direction in response to pneumatic pressure within said cylinder;
- and in an opposite axial direction in response to a spring means within said cylinder;
- said piston shaft comprising
- a first portion and a second portion threadably connected to permit changing of the length of said position shaft with a resultant change of distance between said first plate and said second plate;
- D) a controllable source of said pneumatic pressure adapted for moving said piston shaft out of said cylinder and pushing said first plate in a direction away from the second plate.
Dependencies are inferred from the claim text.