Drilling device

Details Drilling device Drilling device

1988-01-22

1989-05-02

Yost, Frank T.

Tool driving or impacting

Impacting devices

With means for rotating tool

173 47, B25D 904

Patent

active

048259616

ABSTRACT:
In a drilling device, a tool mounted in the device can be selectively switched from right-hand rotation to left-hand rotation. The tool can be connected to an output shaft on which two conical gear wheels are mounted in spaced relation so that they can be rotated in opposite directions around the output shaft. The teeth on the conical gear wheels face one another and are in meshed engagement with gear teeth on a drive shaft. A coupling part is slidably displaceably mounted on the output shaft and can be engaged with one or the other of the conical gear wheels. The coupling part is secured on the output shaft so that as it is rotated by one or the other conical gear wheels, in turn, it rotates the output shaft in the desired direction.

REFERENCES:
patent: 991094 (1911-05-01), Schneider
patent: 1170041 (1916-02-01), Brennan
patent: 1170171 (1916-02-01), Lane
patent: 1475982 (1923-12-01), Buhr
patent: 1936108 (1933-11-01), Edwards
patent: 2473816 (1949-06-01), Perkins
patent: 2591516 (1952-04-01), Darnell
patent: 2793305 (1957-05-01), Gerentes
patent: 3114423 (1963-12-01), Nuslund
patent: 3828863 (1974-08-01), Bleicher et al.
patent: 4217964 (1980-08-01), Eaton
patent: 4619162 (1986-10-01), Van Laere

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