Socket assembly for ultrasound-controlled screwing device

Details Socket assembly for ultrasound-controlled screwing device Socket assembly for ultrasound-controlled screwing device

1999-12-17

2001-06-26

Smith, James G. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

C081S121100

Reexamination Certificate

active

06250182

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a socket assembly for an ultrasound-controlled screwing device.
Such a socket assembly is disclosed for example in the German patent document D-A 42 31 429. It has a coupling means for a rotary connection between a screw connection and a screw spindle of a screwing device. The socket assembly serves additionally for producing an electrical connection between the screw connections and the screwing device, so that the screwdriver due to its electrical conductivity provides a ground terminal of the screwing device. The voltage supply to, an ultrasound resonator arranged on the screw connection is performed through a contact pin engaging the socket assembly. A presumption for an error-free contacting of the ultrasound resonator is an interference-free ground contacting, which in the known screwdriver is not always provided in particular during the plugging on the screw connection.
For eliminating the above mentioned problem, it is proposed in the German patent document DE-A 44 31 675, to arrange on the screw spindle a ground conductor parallel to the contact pin, which similarly to the contact pin engages the socket assembly and contact the screw connection. The additional ground conductor eliminates the contact interferences, however, it makes necessary the provision of its own screw spindle. With the screw spindles having only one contact pin, the problem of electrical ground contacting further is caused.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a socket assembly which avoids the disadvantages of the prior art.
In keeping with these objects and with others which will become apparent hereinafter, one feature resides, briefly stated, in a socket assembly, in which the contacting means have an electrical conductor which is held in a springy manner on the socket.
When the socket assembly is designed in accordance with the present invention, an interference-free electrical mass contacting between the screw connection and the screwing device is guaranteed also during the placement of the socket assembly on the screw connection, without requiring simultaneously a specifically designed screw spindle.
The novel features which are considered as characteristic for the present invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.


REFERENCES:
patent: 5699703 (1997-12-01), Habele
patent: 5974919 (1999-11-01), Habele
patent: 42 31 429 C1 (1994-03-01), None
patent: 44 31 675 A1 (1996-03-01), None
patent: 2684585 A1 (1993-06-01), None

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