| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 081570420 | Direct drive | 14 |
| 20080314204 | SCREW TIGHTENING APPARATUS - The screw tightening apparatus includes a motor, an output shaft to which a bit for screw tightening is connected so as to be rotatable integrally with the output shaft and which is axially movable, the output shaft being driven to be rotated by the motor, a spring whose one end contacts a member constituting a main body of the screw tightening apparatus, and a spring receiving member which the other end of the spring contacts and transmits a biasing force of the spring to the output shaft. The screw tightening apparatus further includes a conductive member which contacts the output shaft and the spring receiving member. This configuration enables static electricity generated on the bit to certainly flow into the main body of the apparatus (ground) via the output shaft, the conductive member, the spring receiving member, and the spring. | 12-25-2008 |
| 20100224034 | Compression Nut Removal Device - The present invention is an embodiment of a machine-enabled compression nut and ferrule removal device. The compression nut puller of the present invention features a shaft attachment for insertion into a mechanized hand drill to enable swift and easy removal of heavily torqued compression nuts. The invention also includes a base support plate with the enhanced compression removal assistance of a metal support housing for the shaft, and a pipe attachment sleeve. This allows for powered rotation of the axle of the shaft while the supports remain stationary, which enables the quick removal of a tightly compressed nut and ferrule, whether it is deformed, corroded, or otherwise damaged. | 09-09-2010 |
| 20110259155 | COMPACT ONE TOUCH PNEUMATIC WRENCH - A compact one touch pneumatic wrench includes a cylinder having an improved air passage to achieve one touch function and a housing mad of engineering plastic material. Compared to a conventional pneumatic wrench which needs one hand to hold the handle and the other hand to operate the clockwise/counterclockwise rotation of the motor, the present invention improves the air passage of the cylinder to provide a simple and convenient operation with only one hand, providing a convenient operation and enhancing the work efficiency. | 10-27-2011 |
| 20150343579 | NUT RUNNER WITH CORE RUNOUT PREVENTING MECHANISM - A nut runner which comprises a socket holder attached to a tip end of an output shaft, a slide mechanism unit for extending and retracting the output shaft in the axial direction, a pushing unit for pushing the output shaft toward the tip end side in the axial direction, during a screw tightening operation, in cooperation with the slide mechanism unit, and a supporting unit for supporting a socket retained by the socket holder while allowing a nut runner driving unit to rotate and axially move the socket. | 12-03-2015 |
| 081570440 | Fluid | 9 |
| 20080289452 | Adjusting device for a hand-held tool - A hand tool device incorporates a fluid operated mechanism actuable by a plunger pressurizing a reservoir to force fluid past a resiliently biased valve to a fluid filled cylinder accommodating a piston carrying a contact member for clamping a work piece in the manner of an adjustable wrench or pliers. Continued operation of the plunger increases the pressure applied to the work piece. | 11-27-2008 |
| 20090107298 | Power Wrench - The invention relates to a hydraulic power wrench comprising a ratchet lever ( | 04-30-2009 |
| 20130239754 | SQUEEZING HEAD TORQUE TOOL - A uniquely designed torque wrench having a torque body, the torque body attached to a drive head, the drive head entering a contracted stated during extension of a rod of a hydraulic cylinder, and entering an expanded state during the retraction of the rod of a hydraulic cylinder. | 09-19-2013 |
| 20130255448 | PNEUMATIC DRIVEN RATCHET WRENCH CAPABLE OF PREVENTING MIS-SWITCHING OF ROTATIONAL DIRECTIONS OF A SPINDLE - A pneumatic driven ratchet wrench comprises: a wrench housing; a spindle-engaging unit including a ratchet wheel; a rotation-driving unit for driving rotation of the spindle; a direction-driving unit; a reverse gear unit driven by the direction-driving unit to engage the ratchet wheel so as to switch rotational directions of the spindle; a first valve unit operable to permit fluid communication between a first fluid passage and one of a chamber and a second fluid passage while preventing fluid communication between the first fluid passage and the other of the chamber and the second fluid passage; and a second valve unit operable to permit fluid communication between the second fluid passage and a selected one of third and fourth fluid passages. | 10-03-2013 |
| 20130319183 | Apparatus and Methods for threading a nut along an elongate member - Apparatus and methods for threading a nut along a stud or similar elongate member include use of a contact member within a first orifice that engages the nut, and a torque transfer member within a second orifice that engages both the contact member and a power source, such as an air ratchet. Torque from the power source causes movement of the torque transfer member, which in turn causes movement of the contact member, thereby threading or unthreading the nut along the stud or other elongate member. The first orifice includes a through bore for accommodating passage of the elongate member, while the body of the apparatus can include ferromagnetic members for preventing loss of the nut and additional structures for limiting undesired movement of the power source or apparatus through contact. | 12-05-2013 |
| 20140033876 | AUTO CYCLE PUMP AND METHOD OF OPERATION - A hydraulic flow sensing apparatus is provided. The apparatus includes: a manifold; a hole in the manifold in fluid communication with a fluid pathway; a poppet valve in the hole in the manifold configured to move when fluid in the pathway flows; and a proximity switch configured to detect movement of the poppet valve. A method of operating a hydraulic circuit may also be provided. | 02-06-2014 |
| 20150107421 | Quadrilobe connector for transmitting torque - A quadrilobe connector defined by a cross-sectional shape derived from a square, where each of the corners of the square is replaced with an arc of a circle, and ends of two adjacent arcs meet to form a depression between the arcs. Further, each of the four arcs is equal in radius and intersects tangentially to each other arc. | 04-23-2015 |
| 20150375375 | SQUEEZING HEAD TORQUE TOOL - A uniquely designed torque wrench having a torque body, the torque body attached to a drive head, the drive head entering a contracted stated during extension of a rod of a hydraulic cylinder, and entering an expanded state during the retraction of the rod of a hydraulic cylinder. | 12-31-2015 |
| 20160178013 | APPARATUS FOR TIGHTENING THREADED FASTENERS | 06-23-2016 |
| 081570460 | Tangential engagement | 1 |
| 20110290081 | RATCHET PULLEY SYSTEMS - The general purpose of the ratchet pulley system is to provide the user with a tool capable of greater speed, convenience, and torque in loosening or tightening fasteners. The torque multiplying ratchet pulley preferably comprises an extruded drive lug; a grippable housing disk; at least one pulley (rotatable/non-rotatable); a pawl; and a recoilable pull-cable (or non-recoilable version in certain embodiments) with a handle (T-shaped) wherein the extruded drive lug is preferably connected to a recoilable pull-cable such that when a user pulls the recoilable pull-cable via the handle, the extruded drive lug is rotated allowing a fastener to be turned (tightened or loosened.) | 12-01-2011 |
