Tool driving or impacting – Impacting devices – With anvil arranged to transmit torsional impact to tool
Patent
1988-03-18
1990-06-26
Watts, Douglas D.
Tool driving or impacting
Impacting devices
With anvil arranged to transmit torsional impact to tool
173163, 81463, B25B 2300, F16B 2510
Patent
active
049363956
ABSTRACT:
A fastening device comprises a screw (2) and a pulsating tool in which the pulsating tool has a driving part which applies pulsations to a driven part in such a way that the resulting pulsating force is exerted tangentially to the direction of thread. For this purpose the driving part and driven part are in each case provided with bodies striking against one another and whose shape is adapted to produce the appropriately direction pulsations. The screw preferably has a hexagonal head which fits within a hexagonal socket in the pulsating tool. The tip of the screw may also be constructed to act as a drill. For inserting the screw, generally a hole is drilled and the screw inserted into it. The screw can be screwed into virtually all materals, such as concrete, brick, wood and wooden slats. As no dowels are required, the fastening method is more reliable and durable.
REFERENCES:
patent: 1954620 (1934-04-01), Connell
patent: 2126673 (1938-08-01), Smith, Jr.
patent: 2724299 (1955-11-01), Amtsberg
patent: 3319723 (1967-05-01), Kramer
patent: 4572720 (1986-02-01), Rockenfeller et al.
Pat AG.
Rad Rinaldi
Watts Douglas D.
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