Abstract: A pneumatic grinding tool having a blower feature that can be selectively employed to blow debris away from a work area. The tool has a valve that directs input air that can be used to drive an output of the tool to a blower air passage. The blower air passage terminates at a head of the near the output of the tool.

Abstract: A pneumatic rotary tool has a housing formed primarily from plastic so that the weight and price of the tool are substantially reduced. The air motor is formed for economic assembly while permitting greater structural stability should the housing deflect under an impact. The tool includes a torque selector which controls the amount of pressurized air allowed to enter the air motor, thereby controlling the torque output of the motor. The user may adjust the torque selector to a number of set positions which correspond to discrete torque values. The tool additionally incorporates early and late stage exhaust ports, so that backpressure within the air motor does not slow motor rotation or decrease tool power.

Abstract: A pneumatic tool includes a plastic grip. The grip includes an outer layer of soft material overmolded onto the plastic grip. The outer layer is of a one-piece construction and covers substantially an entirety of the grip. In a method of assembling a pneumatic rotary tool, a plurality of bolts are inserted through an end cover and a housing of the tool. The bolts are threaded into a clutch casing, wherein the bolts draw the end cover toward the housing and the housing toward the clutch casing so that the end caps and support sleeve of the air motor are compressed within the housing to fully seat the end caps onto the support sleeve so that the motor. The housing and the end cover cooperate to hold the air motor in proper alignment within the tool.

Abstract: A clutch mechanism for a rotary impact tool comprises a cam ball and a cam follower. The cam follower includes a raceway for allowing the cam ball to travel along a surface of the cam follower. The raceway includes a crest having a ramp with a concave slope for inhibiting the cam ball from passing over the crest when the tool is not loaded while allowing the cam ball to travel over the crest when the tool is loaded to thereby push the cam follower axially forward to cause a hammer to impact an output shaft.

Abstract: An automatic saw includes a serrated blade, a blade holder connected to the serrated blade at one end thereof, a plunger arranged at the other end of the blade holder and arranged inside a housing as slidable in the housing, an engagement piece secured to the plunger inside the housing having an engagement elongated hole formed at a side surface of the engagement piece, the engagement hole extending in a direction perpendicular to an extending direction of an axis of the plunger, an air motor rotatable of a crank shaft inserted in and engaged with the engagement hole via a side opening formed in the housing, and a motor housing covering the motor rotatably coupled to the side opening. The rotational force of the crank shaft according to operation of the air motor is converted to back and forth reciprocal movement of the serrated blade via the engagement hole and the engagement piece.

Abstract: A power driven tool useful for tightening and loosening a mechanical fastener includes an impact mechanism. Preferably, the tool is pneumatic and includes a ratchet head and an impact device for providing additional torque to the ratchet head. A planetary reduction gear reduces the high output speed of a pneumatic motor for input into the impact device and reduces wear on the impact device.

Abstract: A power driven tool useful for tightening and loosening a mechanical fastener includes an impact mechanism. Preferably, the tool is pneumatic and includes a ratchet head and an impact device for providing additional torque to the ratchet head. A planetary reduction gear reduces the high output speed of a pneumatic motor for input into the impact device and reduces wear on the impact device.

Abstract: Generally, a pneumatic rotary tool of the present invention comprises a housing formed of a plastic material and includes a motor receptacle having a front end and an open rear end. An air motor is disposed within the motor receptacle of the housing. An air inlet passage extends to the motor for delivering pressurized air to the motor to power the motor to drive an output shaft. An end plate of the motor has air passaging formed therein, at least part of the air passaging defining a portion of the air inlet passage. A torque selector is at least partially received in the end plate and includes a portion disposed in the air passaging defined in the end plate and at least partially blocking the flow of air in the air passaging except through the portion of the torque selector.

Abstract: A pneumatic rotary tool has a housing formed primarily from plastic so that the weight and price of the tool are substantially reduced. The air motor is formed for economic assembly while permitting greater structural stability should the housing deflect under an impact. The tool includes a torque selector which controls the amount of pressurized air allowed to enter the air motor, thereby controlling the torque output of the motor. The user may adjust the torque selector to a number of set positions which correspond to discrete torque values. The tool additionally incorporates early and late stage exhaust ports, so that backpressure within the air motor does not slow motor rotation or decrease tool power.

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.

Abstract: Generally, a pneumatic rotary tool of the present invention comprises a housing formed of a plastic material and includes a motor receptacle having a front end and an open rear end. An air motor is disposed within the motor receptacle of the housing. An air inlet passage extends to the motor for delivering pressurized air to the motor to power the motor to drive an output shaft. An end plate of the motor has air passaging formed therein, at least part of the air passaging defining a portion of the air inlet passage. A torque selector is at least partially received in the end plate and includes a portion disposed in the air passaging defined in the end plate and at least partially blocking the flow of air in the air passaging except through the portion of the torque selector.

Abstract: A pneumatic rotary tool has a housing formed primarily from plastic so that the weight and price of the tool are substantially reduced. The air motor is formed for economic assembly while permitting greater structural stability should the housing deflect under an impact. The tool includes a torque selector which controls the amount of pressurized air allowed to enter the air motor, thereby controlling the torque output of the motor. The user may adjust the torque selector to a number of set positions which correspond to discrete torque values. The tool additionally incorporates early and late stage exhaust ports, so that backpressure within the air motor does not slow motor rotation or decrease tool power.

Abstract: A pneumatic rotary tool has a housing formed primarily from plastic so that the weight and price of the tool are substantially reduced. The air motor is formed for economic assembly while permitting greater structural stability should the housing deflect under an impact. The tool includes a torque selector which controls the amount of pressurized air allowed to enter the air motor, thereby controlling the torque output of the motor. The user may adjust the torque selector to a number of set positions which correspond to discrete torque values. The tool additionally incorporates early and late stage exhaust ports, so that backpressure within the air motor does not slow motor rotation or decrease tool power.

Abstract: A pneumatic ratchet drive wrench of the present invention includes a pair of single springs that each bias a corresponding pawl into engagement with an output member and inhibit counter-rotation of the output member opposite the corresponding pawl. The pawl and spring construction allows the wrench head to be smaller than conventional pneumatic ratchet drive wrenches, providing better wrench access into small spaces. The spring is inexpensively formed as one piece of spring wire having independent spring coils for biasing the pawl and inhibiting counter-rotation of the output member.

Abstract: A pneumatic ratchet drive wrench of the present invention includes a pair of single springs that each bias a corresponding pawl into engagement with an output member and inhibit counter-rotation of the output member opposite the corresponding pawl. The pawl and spring construction allows the wrench head to be smaller than conventional pneumatic ratchet drive wrenches, providing better wrench access into small spaces. The spring is inexpensively formed as one piece of spring wire having independent spring coils for biasing the pawl and inhibiting counter-rotation of the output member.

Abstract: A pneumatic rotary tool including a housing and an output shaft projecting from the housing for transmitting torque to an object. An air motor drives rotation of the output shaft in the forward and reverse directions. Air passages extend from an air inlet to the motor for delivering pressurized air to the motor. A spring biases the lower portion of a valve within the air passage in a closed position, to restrict the flow of air through the air passage. The upper portion of the valve comprises a stem. When an operator squeezes a trigger on the pneumatic rotary tool, a deflector connected to the trigger deflects the stem to a first angularly deflected position, the valve thereby allows a relatively low rate of air flow to the motor for low-speed operation thereof. As the operator continues to squeeze the trigger, the stem is deflected to a second angularly deflected position, allowing a relatively high rate of air flow to the motor for high-speed operation thereof.

Abstract: A power ratchet wrench has a handle for gripping and holding the wrench and a head pivotally connected to the handle for pivoting movement relative to the handle about a pivot axis. A locking mechanism comprising a pivot assembly pivotally connects the head to the handle. The locking mechanism is configured to permit selective angular positioning of the head relative to the handle on the pivot axis and is operable between an adjusting mode in which the head is angularly positionable relative to the handle and a locking mode in which the head is locked in an angular orientation relative to the handle. The locking mechanism is rotatable about an axis transverse to the handle between the adjusting mode and locking mode of the locking mechanism.

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.