Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Reexamination Certificate
2000-01-04
2001-07-31
Hail, III, Joseph J. (Department: 3723)
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
C029S264000, C029S259000, C029S278000
Reexamination Certificate
active
06266859
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a power steering pump pulley removal tool for removing a pulley attached by a splined or non-splined drive shaft to a automotive power steering pump. More particularly, the present invention is directed to a power steering pulley removal tool including two halved capable of clamping on an annular pulley extension on the outer face of the pulley while a threaded drive bolt is compressed against the splined or non-splined drive shaft so as to pull the pulley off of the drive shaft.
BACKGROUND OF THE INVENTION
Power steering pumps are in wide use to provide for a power assist in the steering of motor vehicles. These pumps typically have a pump through which power steering fluid is pumped, the pump being driven by a drive belt which engages a pulley on the pump. The pulley is attached to the pump drive shaft either by splines formed on the exterior of the drive shaft and the interior of the pulley, or by a set screw which passes through the pulley and engages a non-splined shaft.
The present invention relates to the removal of pulleys from pumps having splined or non-splined drive shafts, in which event the pulley outer face has an axially disposed disc with an annular groove formed thereon, which is gripped by a pair of jaws to extract the pulley from the drive shaft as the drive bolt is rotated. The prior art devices used for this purpose have suffered from two principal deficiencies: the jaws have tended to separate under the extraction force, and the jaws have tended to rotate with the rotation of the drive bolt.
SUMMARY OF THE INVENTION
According to the present invention, a power steering pump pulley removal tool has a pair of jaws mounted by mounting fasteners on opposite faces of a hub which has a threaded passageway extending axially therethrough, the jaws being in longitudinal alignment with one another and the passageway, the jaws having complementary arcuate gripping elements formed thereon so as to be remote from the hub with a pair of laterally aligned grip-holding fasteners extending through one of the jaws adjacent its gripping element and engaging the other jaw adjacent to its gripping element, the hub having a handle extending laterally therefrom, and a complementarily threaded drive bolt disposed in the hub passageway and having a power steering pump drive shaft engaging end adjacent the jaw gripping elements and a drive end remote therefrom.
REFERENCES:
patent: 2562419 (1951-07-01), Ferris
patent: 4955130 (1990-09-01), Bricker et al.
patent: 5119556 (1992-06-01), Hseu
patent: 5887328 (1999-03-01), Rydin et al.
patent: 5894650 (1999-04-01), Barenburg
patent: 5996201 (1999-12-01), Ringle
Alltrade Inc.
Hail III Joseph J.
Thornton Robert R.
Wilson Lee
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