Electric tool

Details Electric tool Electric tool

1999-09-01

2000-10-03

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

173117, 173122, H02K 719

Patent

active

061277517

ABSTRACT:
An electric tool including a hammer mechanism (9), a drive motor (11) for driving the hammer mechanism (9), a gear (10) for connecting the drive motor (11) with the hammer mechanism (9), a ventilator wheel (7) provided in an end region of the drive motor (11) remote from the gear (10) and connected with an exhaust opening (8), and separate air channels (3,4) having each a suction opening (5,6) and ending at a side of the wheel (7) adjacent to the drive motor (11), with one of the air channels (3) being associated at least with the gear (10), and another of the air channels (4) being associated at least with the drive motor (11).

REFERENCES:
patent: 3517755 (1970-06-01), Badcock
patent: 3718193 (1973-02-01), Wanner
patent: 3926266 (1975-12-01), Dorgnon
patent: 4276941 (1981-07-01), Wanner et al.
patent: 4476941 (1984-10-01), Buck et al.
patent: 4609053 (1986-09-01), Ragnmark
patent: 4766963 (1988-08-01), Hartwig et al.
patent: 5052497 (1991-10-01), Houben et al.
patent: 5099160 (1992-03-01), Strozel et al.

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