Pneumatic rotating tool
AssigneeK-R Industry Company Limited
InventorToshiro Iritani
Life of this patent
Estimating the term…
Abstract
A pneumatic rotating tool is disclosed wherein the amount of air discharged is adjusted with a finger of the hand which holds the tool, thereby making it possible to adjust the rotational speed of the air motor incorporated in the tool. Rotation of a cylindrical regulator relative to a cylindrical housing is limited to an angle through a predetermined range centered on an axis of the cylindrical housing. The regulator is formed with a cutout portion and a depression both for opening exhaust holes formed in the motor body. The regulator is further formed with thick-wall portions for closing the exhaust holes.
Claims9
A pneumatic rotating tool comprising:
- a cylindrical housing;
- an air motor fixed within said cylindrical housing and having a plurality of exhaust holes, with a communication space between an inner wall surface of said housing and an outer wall surface of said air motor providing communication between said exhaust holes and an exterior of said housing;
- and
- a cylindrical regulator having a distal portion fitted inside of and supported by the inner wall surface of the housing, said cylindrical regulator having first retaining means for engaging second retaining means on the housing for limiting rotation of the regulator relative to the housing to within a predetermined rotational range, and said cylindrical regulator having opening/closing means for opening and closing said exhaust holes formed in said air motor in accordance with rotational position of the regulator relative to the housing.
A pneumatic rotating tool comprising:
- a cylindrical housing;
- an air motor fixed within said cylindrical housing and having a plurality of exhaust holes, with a communication space between an inner wall surface of said housing and an outer wall surface of said air motor providing communication between said exhaust holes and an exterior of said housing;
- and
- a cylindrical regulator having a distal portion fitted inside of and supported by the inner wall surface of the housing, said cylindrical regulator having first retaining means for engaging second retaining means on the housing for limiting rotation of the regulator relative to the housing to within a predetermined rotational range, and said cylindrical regulator having a stepped inner wall surface providing inner wall areas at different radial distances from said exhaust holes in order to vary the amount of air discharged from the exhaust holes depending on the rotational position of the regulator.
Dependencies are inferred from the claim text.