Tool shank and chuck combination for a hammer drill

Details Tool shank and chuck combination for a hammer drill Tool shank and chuck combination for a hammer drill

1977-10-11

1978-10-31

Weidenfeld, Gil

Chucks or sockets

Socket type

Lost motion

B25D 1708

Patent

active

041230744

ABSTRACT:
A hammer drill has a chuck forming a tool receptacle defining a chuck axis and provided with a tool-holding element radially displaceable into a position protruding into the tool receptacle. The tool has a shank defining a tool axis receivable axially in the receptacle. This shank is formed with a radially outwardly open recess closed at both of its axial ends and shaped to receive the tool-holding element, and with an axially extending groove separate from the recess and open axially at a free end of the shank. At least a section of the shank has a conical shape decreasing in a direction towards the free end of the shank. The shank may be provided with at least one cylindrical guiding section located adjacent to the above conical section.

REFERENCES:
patent: 2572840 (1951-10-01), Curtis
patent: 3458210 (1969-07-01), Whitehouse

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