71results about How to "Balanced force" patented technology

A clamping system (10 / 110) for holding, supporting or lifting a heavy work piece (200; e.g. a pipe section of pipe line of hundreds of pounds) located below a girder (100) using rigging (210) attached to the clamp at attachment openings (27 / 37, 127 / 137) equally spaced from the center-line web (103) of the girder, which clamping system is attached to opposed, side edges of the top flange member (102) of the girder (vis-a-vis the bottom flange member 101), or in a second embodiment (FIGS. 9+) to either the top or the bottom. In the second embodiment a straight bar (150) with a series of spaced, locking cavities (151a / b) is used in place of the threaded rod, threaded engagement of the first embodiment, with the cavities working with spring-biased pin latches on the side gripping elements. When used on the bottom flange, a slidable, load supporting, centrally located accessory (160) is used.

Present invention relates a suspendable magnetic brush for cleaning an aquarium with curved window surface, characterized in that an upper cover with an air chamber is attached tightly to a bottom cover with a cleaning material layer underneath, and an inner cover with a magnet located therein is provided inside the air chamber, said inner cover being attached to the bottom cover while isolated from the air chamber. Said upper cover having through holes connecting the air chamber to the exterior of the device. It is possible to adjust the air or liquid in the air chamber through the holes connecting the upper cover and the air chamber so that the weight of the interior magnetic brush can be adjusted so as to balance all the forces exerted upon the interior magnetic brush. As a result the interior elements of the brush can suspend in the water and move smoothly on the aquarium window upon the manipulation of the exterior brush. With the convex edge(s) of the bottom cover matching the curved window surface of the aquarium the magnetic brush can clean both curved window surface and the planar window surface as well.

A rotatably alternating air or water cooled two-stroke internal combustion engine comprising a cylindrical casing, and a rotor comprising two radially extending vanes affixed to a shaft rotatably mounted within the casing upon two end plates. Two longitudinally extending walls affixed to the casing. Sealing strips provided between said walls, the shaft, the vanes, the casing and the end plates respectively. Working and supercharging interior chambers between the vanes and the walls. The casing and / or the end plates equipped with ports which communicate with the interior chambers, allowing for intake of combustible air-fuel mixture and exhaust thereafter. Ignition means delivering a spark at the end of each working cycle. An extendable and adjustable connecting rod assembly converting the oscillating bi-directional rotary motion of the output shaft into a continuous unidirectional motion of the main shaft. A self lubricating mechanism incorporated into the engine.

An improved rotary servovalve system employs a rotary magnetic solenoid having an armature that includes at least one permanent magnet. The armature is rotatable relative to a stator formed as an electromagnet which is energizable to create alternative electromagnetic fields having opposite polarities from each other. When deenergized, the stator allows the armature to return to a neutral, null position from positions of extreme rotation in opposite angular directions due to the magnetic force of the permanent magnet of the armature. The armature is coupled to carry a movable valve element in angular rotation therewith, so that flow through the servovalve of the system can occur in alternative directions. Also, the valve element is biased toward a position in which all of the valve ports are closed when power is removed from the rotary solenoid. The control circuit employed in the rotary servovalve system expands the bandwidth of response of the solenoid actuator by compensating for frequency variations in the input command signal and in the feedback signal. This compensation is achieved utilizing a combined proportional, integral, and differential amplification circuit. Also, imbalance of fluid forces within the servovalve mechanism can be avoided by utilizing a pair of inlet orifices, a pair of outlet orifices, a pair of first fluid control orifices, and a pair of second fluid control orifices. The orifices within each pair are located on opposite sides of the valve housing from each other.

The invention relates to a flat steel bifurcated pipe and a manufacturing method thereof. The flat steel bifurcated pipe comprises a main pipe, a left branch cone and a right branch cone, wherein one end of the left branch cone is communicated with one end of the main pipe; one end of the right branch cone is communicated with one end of the main pipe; one side of the left branch cone leans against and is welded with one side of the right branch cone; another end of the left branch cone and another end of the right branch cone are respectively communicated with a left branch pipe and a right branch pipe; bottoms of the main pipe, the left branch cone, the right branch cone, the left branch pipe and the right branch pipe are located at the same one altitude. The flat steel bifurcated pipe has the advantages that the shape of the flat steel bifurcated pipe is different from the principle of the same one altitude of axial lines of various pipe joints of the other steel bifurcated pipes and ensures the same one altitude on the bottom of the various pipe joints; the same one altitude on the bottom of the pipe has independent goodness; water can flow freely to be discharged when high-pressure pipes are maintained without pumping the water by a water pump or arranging holes on the steel bifurcated pipe and connecting with a special drainage system; the drainage time is shortened greatly, and the effective work time for maintenance is prolonged; the flat steel bifurcated pipe has the advantages of regular shape, no deformity portions, reasonable force and no stress concentration phenomenon.

Apparatus for washing and dewatering pulp comprising rotatable press rolls including permeable outer surfaces and a casing comprising a vat in which the rolls are installed are disclosed. A feed for feeding the pulp through the gap between the vat and the outer surfaces of the press rolls is provided and the vat includes a vat segment providing at least one compartment between the vat segment and the casing, the at least one compartment extending along the longitudinal extension of one of the first and second rotatable press rolls and a pressure device to maintain the pressure in the at least one compartment corresponding to the pressure in the gap.

A door panel position control mechanism for a multiple panel horizontal sliding door assembly of a freight elevator landing. The mechanism comprises a multiple node scissors linkage that is configured to be easily installed and initially adjusted and which has its parts symmetrically balanced about a vertical plane such that excessive eccentric loading on the components is reduced and a long service life is obtained with reduced wear and a reduced need for periodic adjustment.

A formation and rotation apparatus for use in forming and rotating interconnected sections of a cylindrical workpiece, including a frame and a head arranged within the frame, the head defining two slots and being operatively rotated via an integral drive assembly. A first slide block is slidably disposed within one of the two slots, and a second slide block is disposed within another of the two slots, each of the first and the second slide blocks include a cutting wheel and a beading wheel for successively forming each of the interconnected sections. An armature having an axis of rotation is also provided, along with a gripping mechanism being operatively connected to the armature. A drive mechanism selectively rotates the armature about the axis of rotation after the gripping means has closed about one of the interconnected sections.

A rotatably alternating air or water cooled two-stroke internal combustion engine comprising a cylindrical casing, and a rotor comprising two radially extending vanes affixed to a shaft rotatably mounted within the casing upon two end plates affixed to the casing. Two longitudinally extending walls unitary or affixed to the casing. Sealing strips provided between said walls and the shaft and between the vanes, the casing and the end plates respectively. The casing and, or the end plates equipped with plurality of ports which communicate with interior chambers formed between the vanes and the walls, allowing for intake of combustible air-fuel mixture and exhaust thereafter. Ignition means delivering a spark at the end of each working cycle. An extendable connecting rod assembly converting the oscillating bidirectional rotary motion of the output shaft into a continuous unidirectional motion of the main shaft.

A surgical tensioning assembly providing a means to apply a variable and selective force to tissues, such as replacement ligaments, during a ligament reconstruction surgery. The assembly provides a means to apply a selective, measurable and a generally balanced force on multiple tissues. One embodiment of the tensioning assembly includes a set of subassemblies, namely an engagement subassembly, a variable force subassembly and an equalizing subassembly. These subassemblies are operably connected to each other such that they are able to provide tension on tissues connected to the assembly. In one embodiment the tensioning assembly further includes a mounting subassembly that provides a means to connect the tensioning assembly to a person's body. Methods of use of the surgical tensioning assembly are also disclosed to include novel methods of cycling and conditioning tissue used in a knee ligament replacement surgery.

Apparatus for washing and dewatering pulp comprising rotatable press rolls including permeable outer surfaces and a casing comprising a vat in which the rolls are installed are disclosed. A feed for feeding the pulp through the gap between the vat and the outer surfaces of the press rolls is provided and the vat includes a vat segment providing at least one compartment between the vat segment and the casing, the at least one compartment extending along the longitudinal extension of one of the first and second rotatable press rolls and a pressure device to maintain the pressure in the at least one compartment corresponding to the pressure in the gap.

Radial loads and vibrations and axial loads on a rotor are balanced by a fluid bearing controlled by a self-regulating system that supplies fluid flow or pressure to the gap between the rotor and stator in response to signals of imbalance generated in the machinery itself. The resulting balancing force is thus created by fluidics, and in certain embodiments the sensing circuit is fluidics-based as well. This system provides enhanced flexibility and response time relative to conventional fluid bearings.

A semi-condylar artificial knee joint includes a femoral prosthesis and a tibial prosthesis, and the cross-section of said tibial prosthesis is of a kidney-like type. The tibial prosthesis is disposed at one side of the tibial plateau intercondylar eminence and is located below the femoral prosthesis. The artificial knee joint further includes a locating pin for fixing the tibial prosthesis. The bottom surface of said tibial prosthesis is provided with a prosthetic notch, and below said tibial prosthesis is provided with a tibial notch. Said prosthetic notch corresponds to said tibial notch, and together forming a limiting hole for accommodating the locating pin. The cooperation between the locating pin and the limiting hole can ensure relative position stability and balance between the tibial prosthesis and the tibial plateau intercondylar eminence.