Hand-held pneumatic rotary drive device
AssigneeS.P. Air Kabusiki Kaisha
InventorOsamu Izumisawa
Life of this patent
Estimating the term…
Abstract
A hand-held pneumatic rotary drive tool having an adjustable exhaust. The tool has an elongate housing containing a pneumatic motor. The housing has an inlet passage for pressurized air at the rearward end of the housing and air delivery passaging for flow of pressurized air to the motor. A rotary connector on the housing at the inlet passage permits connection to an air hose. The housing also has an air exhaust passage for exhausting air from the motor. An air deflector for exhausting air exiting the exhaust passage is rotatable around the connector for deflecting exhaust air laterally outward in a selected direction away from a user holding the tool.
Claims19
A hand-held pneumatic rotary drive device comprising:
- a generally elongate housing sized and shaped to be held in the hand having a forward end and a rearward end as so held and having an axis extending longitudinally endwise thereof;
- said housing having a chamber adjacent its forward end and a pneumatic motor having a rotor rotary in said chamber on said axis;
- a drive shaft driven by said rotor extending out of said forward end of the housing;
- said housing having an inlet passage for pressurized air at said rearward end thereof extending in generally longitudinal direction relative to said housing;
- an air hose connector rotary in sealed relation to said housing on an axis extending in generally longitudinal direction relative to said housing, said connector being of tubular form having a bore for flow of pressurized air to said inlet passage, said connector being for connection of an air hose for supplying pressurized air from a source thereof to the bore of said connector and allowing swivelling of the housing relative to the hose and connector;
- said housing having air delivery passaging for flow of pressurized air from said inlet passage to the motor;
- said delivery passaging having a valve therein;
- said housing having a member thereon operable by the hand holding the device for operating the valve;
- said housing having air exhaust passaging therein for exhausting air from the motor chamber extending from the chamber to an outlet at said rearward end of the housing laterally outward of said connector;
- and
- an air deflector for exhaust air exiting said exhaust passaging outlet rotatable around said connector for deflecting exhaust air laterally outward in a selected direction away from the user holding the device.
A hand-held pneumatic rotary drive device comprising:
- a generally elongate housing sized and shaped to be held in the hand having a forward end and a rearward end as so held and having an axis extending longitudinally endwise thereof, said housing having a chamber adjacent its forward end and an inlet passage for receiving pressurized air at said rearward end thereof;
- a drive shaft;
- a pneumatic motor having a rotor rotary in said chamber for rotating the drive shaft;
- an air hose connector in sealed relation with said housing, said connector having a bore for flow of pressurized air to said inlet passage, said connector being for connection of an air hose for supplying pressurized air from a source thereof to the bore of said connector;
- said housing having air delivery passaging for flow of pressurized air from said inlet passage to the motor, said delivery passaging having a valve therein and said housing having a member thereon operable by the hand holding the device for operating the valve;
- said housing having air exhaust passaging therein for exhausting air from the motor chamber extending from the chamber to an outlet at said rearward end of the housing outward of said connector;
- and
- an air deflector for exhaust air exiting said exhaust passaging outlet rotatable around said connector for deflecting exhaust air outward in a selected direction.
A pneumatic rotary drive device having a forward end and a rearward end, the device comprising:
- a generally elongate housing having an axis extending between the forward end and the rearward end thereof, said housing having a motor chamber adjacent its forward end in which said pneumatic motor is located, an air hose connector in the rearward end thereof for connection of an air hose supplying pressurized air, an inlet passage within said housing for directing the flow of pressurized air from said connector to said motor chamber, and an air exhaust passage for directing exhaust air away from said motor chamber;
- a drive shaft;
- a pneumatic motor in the motor chamber for rotating the drive shaft;
- and
- an air deflector coaxial with said housing and rotatable about said axis, for directing exhaust air outward in a selected direction, said air deflector being mounted for rotation about said connector.
A pneumatic rotary drive device according to claim 17 wherein the annular wall defines an annular space for receiving exhaust air from said exhaust passage.
A pneumatic rotary drive device according to claim 18 wherein said annular wall is in rotary sealing engagement adjacent its forward end with the housing, said connector having an annular flange, and said annular wall further having an inwardly directed flange at its rearward end in engagement with the annular flange on the connector closing off said annular space.
Dependencies are inferred from the claim text.