Drilling and/or chiselling tool

Details Drilling and/or chiselling tool Drilling and/or chiselling tool

1998-04-07

1999-11-30

Smith, Scott A.

Tool driving or impacting

Impacting devices

Hammer head driven by pulsating fluid pressure

173 48, 173109, B25D 1104

Patent

active

059925418

ABSTRACT:
A tool for drilling and/or chiselling has an axially extending guide tube (9) with at least one radially extending air passage (10) and a control body for selectively closing the air passage. The control body has the stop (30) interacting with a first stop shoulder (18) on a driving anvil (17). The control body can be displaced relative to the guide tube (9) opposite to the working direction of the tool against the biasing action of a spring (12) supported on a connecting sleeve (13) of the control body. The driving anvil (17) has a second stop shoulder (19) facing opposite to the working direction and interacting with a stop surface (20) facing in the working direction. The stop surface (20) is secured axially with the guide tube (9).

REFERENCES:
patent: 4442906 (1984-04-01), Simpson
patent: 4567951 (1986-02-01), Fehrle et al.
patent: 4657088 (1987-04-01), Grossman et al.
patent: 5111890 (1992-05-01), Ranger et al.
patent: 5435397 (1995-07-01), Demuth
patent: 5775440 (1998-07-01), Shinma

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