Tools – Wrench – screwdriver – or driver therefor – Responsive to torque on work
Patent
1999-09-01
2000-08-29
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Responsive to torque on work
81474, B25B 23151
Patent
active
061091499
ABSTRACT:
A screw setting tool including a housing (1), a tool spindle (8) located in the housing (1) and axially displaceable relative thereto, a bit stop (2) provided in the housing (1) for limiting an axial displacement of the tool spindle (8) in a direction opposite to the screw-in direction and adjustable in a direction parallel to a screw-in direction, a spring (10) for biasing the tool spindle (8) in the screw-in direction, and a torque clutch (3) for connecting the tool spindle (8) with a drive motor, the torque clutch (3) having a first clutch member (4) driven by the drive motor, a second clutch member (6) fixedly connectable with the tool spindle (8) for joint rotation therewith, and an intermediate clutch member (5) located between the first and second clutch members (4, 6) and supported on the tool spindle (8) for rotation therearound and an axial displacement relative thereto between an entraining position, in which the intermediate clutch member (5) transmits torque from the first clutch member (4) to the second clutch member (6), and an overload position in which no torque is transmitted from the first clutch member (4) to the second clutch member (6).
REFERENCES:
patent: 2126673 (1938-08-01), Smith, Jr.
patent: 4655103 (1987-04-01), Schreiber et al.
patent: 4809572 (1989-03-01), Sasaki
patent: 5094133 (1992-03-01), Schreiber
patent: 5138916 (1992-08-01), Sato et al.
patent: 5538089 (1996-07-01), Sanford
Hilti Aktiengesellschaft
Smith James G.
Thomas David B.
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