Metal working – Means to assemble or disassemble – Means comprising hand manipulatable tool
Patent
1995-05-19
1997-12-02
Watson, Robert C.
Metal working
Means to assemble or disassemble
Means comprising hand manipulatable tool
269234, B23P 1904
Patent
active
056922841
ABSTRACT:
A tool for installation of freeze plugs in automotive internal combustion engines comprising an elongated hollow member having a wedge in cooperative relationship with a hammer which is slidably mounted in an end of the elongated member to move in a direction orthogonal to the direction of travel of the wedge. In one embodiment, the sliding hammer is itself wedge-shaped and is cooperatively aligned with the wedge. In others, the wedge impacts a ball which in turn impacts the hammer. A driving rod extends through the end of the elongated member such that an impact force applied to the end of the driving rod is transmitted to the wedge, then through the wedge to the hammer. The hammer impacts a driving cap which imparts force to a freeze plug, driving it into position in an aperture in the engine block.
REFERENCES:
patent: D282814 (1986-03-01), Smith
patent: 2424090 (1947-07-01), Gordinier
patent: 3064342 (1962-11-01), Wagner
patent: 4229870 (1980-10-01), Tate
patent: 4286368 (1981-09-01), Magana
patent: 4341004 (1982-07-01), Echols
patent: 4459730 (1984-07-01), Echols
patent: 4514890 (1985-05-01), Stewart
patent: 5020205 (1991-06-01), Wridt
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