Tti (macao Commercial Offshore) Limited

Techtronic Cordless Gp

Techtronic Power Tools Technology Limited

Ac (macao Commercial Offshore) Limited

Edward A Pomeroy

John Walter Schnell

Jie Liu

Essam Namouz

Zachary Scott

Elton Lee Watson

Tyler H Knight

Henry Johnson

Justin Clack

Jinlin Zhou

Liguo Ma

Xinghong Li

Hailing Lin

Ziqiang Cao

Brian D Mertel

Adam Gathers

M Grayson Jacoway

James A Patton

G Michael Hornick

Umesh Rajani

Essan Namouz

Henry T Johnson

Grayson M Jacoway

A method of manufacturing a pressure vessel includes forming an outer cylinder including an annular wall, positioning an inner cylinder within the outer cylinder, and deforming the annular wall of the outer cylinder to engage a portion of the inner cylinder to retain the inner cylinder within the outer cylinder and form the pressure vessel.

Cylinder assembly for gas spring fastener driver

A rotary tool including a tool body defining an axis extending between a rear end and an opposite working end, a motor configured to receive power from a power source, a drive shaft coupled to the motor with the motor, a chuck coupled to the drive shaft, and an axial adjustment mechanism. The axial adjustment mechanism includes an adjustment shaft having an axial end defining a floor of the chuck, where the floor limits an insertion depth within the chuck, and where the adjustment shaft is movable in a direction parallel to the axis between a first position defining a first insertion depth and a second position defining a second insertion depth.

Rotary tool with axial adjustment mechanism

A method for controlling a motor of a power tool including performing a load test on a battery pack of the power tool, determining, via a first controller, a first mechanism control scheme based on the load test, receiving, via the first controller, a user input indicative of beginning an operation cycle of the power tool, and isolating the first controller from a second controller. The method further including controlling, via the first controller, the motor based on the first mechanism control scheme, sensing a dataset indicative of a result of the operation cycle based on the first mechanism control scheme, receiving, via the second controller, the dataset, connecting the first controller to the second controller upon completion of the operation cycle, transmitting, via the second controller, the dataset to the first controller, and determining, via the first controller, a second mechanism control scheme based on the dataset.

Firmware control providing a soft stop on compression drive nailer

A rotary tool includes a housing, a drive shaft positioned within the housing, and a bit holder. The bit holder is positioned adjacent a distal end of the housing and is driven by rotation of the drive shaft. The rotary tool also includes a wrench assembly for adjusting the bit holder and a light source configured to emit light in a direction toward the bit holder. The wrench assembly is positioned adjacent the bit holder and is movable between a first position and a second position. The wrench assembly is coupled to the housing and disengaged from the bit holder assembly in the first position and is engaged with the bit holder assembly in the second position.

Rotary tool

A powered fastener driver includes a first cylinder, a first piston positioned within the first cylinder, a second cylinder in fluid communication with the first cylinder, and a second piston positioned within the second cylinder. The first piston is moveable between a top-dead-center position and at or near a bottom-dead-center position and the second piston is moveable between a top-dead-center position and a bottom-dead-center position to initiate a fastener driving cycle. A drive blade is coupled to the second piston for movement therewith and a drive mechanism is configured to drive the first piston between the top-dead-center position and at or near the bottom-dead-center position. The drive mechanism includes a crank arm that rotates less than 360 degrees for moving the first piston from at or near the bottom-dead-center position and the top-dead-center position and then back to at or near the bottom-dead-center position to complete the fastener driving cycle.

Powered fastener driver

A gas spring-powered fastener driver includes a cylinder, a moveable piston positioned within the cylinder, and a driver blade attached to the piston and moveable therewith from a retracted position to a driven position to drive a fastener into a workpiece. A fill valve is coupled to the cylinder and operable to selectively fill the cylinder with gas to a pressure.

A method of operating a fastener driver comprises initiating a fastener driving operation by moving a driver blade from a retracted position toward a driven position, and detecting that the driver blade has become jammed in an intermediate position between the retracted position and the driven position. The method further includes moving a latch from a locked position, in which a lifter assembly is maintained in an engaged position by the latch for moving the driver blade from the driven position toward the retracted position, to a released position, in which the lifter assembly is movable away from the driver blade. The method further includes driving a motor to rotate a lifter of the lifting assembly, thereby moving the lifter assembly away from the driver blade, then, returning the lifter assembly to the engaged position, and moving the latch from the released position to the locked position.

Jam release and lifter mechanism for gas spring fastener driver

A fastener driver includes a first nosepiece and a second nosepiece coupled to the first nosepiece with a fastener driving channel formed between the first nosepiece and the second nosepiece. A workpiece contact element is movable with respect to the first nosepiece and the second nosepiece between an extended position and a retracted position. A quick-release latch secures the first nosepiece and the second nosepiece together. The workpiece contact element is positioned between the quick-release latch and the first nosepiece.

Depth of drive adjustment mechanism for gas spring fastener driver

A powered fastener driver includes a cylinder and a drive piston within the cylinder being acted on by a driving force resulting from a pressure differential. The powered fastener further includes a drive blade coupled to the drive piston and operable to drive a fastener, and an adjustable valve for selectively introducing air from ambient atmosphere into the cylinder, thereby changing the pressure differential acting on the drive piston. By adopting a self-contained vacuum generating means as described above, the present invention does not rely on any external vacuum source and powered fastener driver can be used and carried with conveniently.

Powered fastener driver and operating method thereof

A fastener driver comprises a drive blade movable from a retracted position to an extended, driven position for driving a fastener into a workpiece and a gas spring mechanism for driving the drive blade from the retracted position to the driven position. The gas spring mechanism includes a drive cylinder and a drive piston attached to the drive blade for movement therewith. The drive piston is acted on by a driving force resulting from a pressure differential created by the gas spring mechanism. The fastener driver also includes an adjustable valve for selectively limiting a flow of gas into the drive cylinder above the drive piston, or a flow of ambient air at atmospheric pressure from the drive cylinder beneath the drive piston, thereby changing the pressure differential acting on the drive piston, as the drive piston and the drive blade move from the retracted position to the extended position.

Gas spring fastener driver including shutter valve

A fastener driver comprises a driver blade movable from a retracted position to an extended, driven position for driving a fastener into a workpiece, a gas spring mechanism for driving the driver blade from the retracted position to the driven position, the gas spring mechanism including a storage chamber cylinder containing a pressurized gas, means for determining a pressure in the storage cylinder chamber, and an indicator activated in response to the determined pressure in the storage cylinder chamber being less than a predetermined pressure value.

Control system for gas spring fastener driver

A fastener driver includes a housing, a cylinder disposed within the housing, a piston positioned and movable within the cylinder, a driver blade attached to the piston and movable with the piston, a motor for driving movement of the piston, a battery removably coupled to the housing for supplying power tot the motor, a nosepiece at least partially defining a fastener driving track through which fasteners are driven by the driver blade, and a magazine operable to supply the fasteners to the nosepiece. The magazine is removable from the nosepiece only in response to prior removal of the battery from the housing.

Gas spring fastener driver

A fastener driver comprises a driver blade movable from a retracted position to a driven position and a lifter assembly for moving the driver blade from the driven position toward the retracted position. The fastener driver also includes a first sensor to detect the driver blade in the driven position, a latch which, in a locked position, maintains the lifter assembly in an engaged position, an actuator coupled to the latch for moving the latch between the locked position and a released position, in which the lifter assembly may move away from the driver blade, and a controller electrically connected with the first sensor and the actuator. In response to an absence of a signal from the first sensor after a predetermined time following initiation of a fastener driving operation, the controller triggers the actuator to move the latch from the locked position to the released position.

Growing community of inventors

Piedmont, SC, United States of America

Edward A Pomeroy