Rotary impact tool with involute profile hammer

Details Rotary impact tool with involute profile hammer Rotary impact tool with involute profile hammer

1997-10-02

1999-05-25

Smith, Scott A.

Tool driving or impacting

Impacting devices

With anvil arranged to transmit torsional impact to tool

B25D 1500

Patent

active

059062444

ABSTRACT:
The invention is an improved rotary impact tool that uses a motor driven mechanism well known in the art as the Maurer mechanism comprising a hammer anvil frame and pins to cause impact loads applied through a rotary output shaft. The improvement is an improved striking surface geometry formed on the impact delivering jaw surface forming an involute profile generated from a base circle having an axis that is parallel to the axis of rotation of the output shaft.

REFERENCES:
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patent: 2580631 (1952-01-01), Whitledge
patent: 2802556 (1957-08-01), Schmid
patent: 3072232 (1963-01-01), Martin et al.
patent: 3321043 (1967-05-01), Vaughn
patent: 3533479 (1970-10-01), Madsen et al.
patent: 3552499 (1971-01-01), Maurer
patent: 3661217 (1972-05-01), Maurer
patent: 4487272 (1984-12-01), Bleicher et al.
patent: 5595251 (1997-01-01), Cook, Jr.
patent: 5738177 (1998-04-01), Schell et al.
"Ingersoll-Rand Impactools"--Marketing Brochure, Authored by various Ingersoll-Rand employees, Pertinent pp. 2-3, Published 1996.

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