78results about How to "Increase stroke length" patented technology

A dual stage actuated (DSA) suspension includes a dam-like structure that holds epoxy along the outside lateral side of the PZT microactuators while that epoxy hardens. In the illustrative embodiment, the dam-like structure is in the form of a wing rail that is integrally formed with the suspension base plate, and extends parallel to the outside face of the PZT. The wing rail has an upturned edge to help contain the epoxy while it hardens. The wing rail has springs at its fore and aft ends so that the rail does not unduly limit movement of the PZTs and hence microactuator stroke length. The wing rail does not touch the PZT electrodes. The encapsulation dam allows epoxy to be dispensed after the PZT has been located on the suspension, so as to substantially cover all sides of the PZT and thus prevent the shedding of contaminating particles during operation.

An autonomous ground maintenance vehicle is capable of varying its operating parameters in response to environmental conditions. These operating parameters include maximum permitted acceleration, deceleration, velocity, rate of change of direction and rate of change of steering values. A rain sensor 50 and moisture sensor 51 may be mounted to the vehicle or be positioned on the ground. An inclinometer may also be provided such that the operating parameters may be varied according to the inclination of the ground to be maintained. If guidance means is provided to guide the vehicle along a specified path a variable operating parameter may be a minimum allowable specified path length.

The invention relates to a full closed-loop numerical control gear shaper for large-scale hydraulic main drive cutting, comprising a rotary table, a shaper body assembly, an intermediate shaper body assembly, a stand column, a cutter relieving mechanism, a cutter rest mechanism, a numerical control system, a hydraulic system, a lubricating system and a cooling chip removing system. Serve motors are arranged on both sides of the rotary table and are connected with a worm gear motion pair through a shaft coupler to form a dual-driving mechanism of the rotary table; a cutter shaft of the cutter rest mechanism is driven by a hydraulic cylinder to do reciprocating motion; a motor base of the cutter rest mechanism is provided with a servo motor; and the cutter relieving mechanism is provided with camshafts of a conjugate dual cams to connect and drive the servo motor. The invention has the advantages that the gear shaper adopts the servo hydraulic cylinder to drive to provide reciprocating motion of the cutter shaft, adopts a torque motor to provide the rotary motion of the cutter shaft and adopts the servo motor to drive the cutter relieving mechanism to meet the processing requirement of large-scale precise gears; the rotary table bears heavy load and has high operation stability; the processing range, the stroke length and the cutting force are enlarged; the processing precision is high; and the processing flexibility adaptability is strong.

Improved actuator apparatus and methodologies for manufacturing and using the same. In one exemplary embodiment, the actuator apparatus includes an SMA filament that: (1) minimizes size and increases stroke length via a serpentine-like routing of the SMA filament within the device itself; (2) reduces power consumption as a result of a relatively flat stroke force as a function of stroke displacement operating profile; (3) enables the actuator assembly to remain in a fully actuated state, at a consistent stroke force, for longer periods of time; and (4) is also fully reversible so as to be capable of use in both push-based and pull-based actuator applications. Methods of operation and manufacturing associated with the aforementioned actuator apparatus are also disclosed.

An exercise machine which includes an elongate frame which forms an enclosure, a resistance assembly located at least partly in the enclosure, a support member for supporting the frame at an inclined position with an upwardly facing front side and a downwardly facing rear side, a seat extending from the front side of the frame at a location at which part of the frame opposes a back of a user seated on the seat, and at least a first actuator which is movable by the user against a first resistance force which is generated by the resistance assembly.

The invention provides a key switch which realizes long strokes, without enlarging a cup rubber 4 in a key switch, in which the pressing operation on a key top 1 is converted into rotational motion and sliding motion in horizontal direction using a first linking member 2 and a second linking member 3, and the first linking member 2 is housed in the second linking member 3 so that they do not overlap in the vertical direction. A spring part 8 is composed of fixed parts 8a and 8b and a spring 8c, in which the fixed part 8a fixes one end of the first linking member 2 to between rotating support parts 1a and 1b which support it so that it can rotate; and the fixed part 8b fixes one end of the second linking member 3 to between sliding support parts 1c and 1d which slidably support it, and puts between the key top 1 and the cup rubber 4 as a whole.

In a vehicle, a size of an acute angle θL defined by a virtual plane perpendicularly or substantially perpendicularly intersecting with an upper axis and a lower axis of a cross member and a up-and-down direction of a vehicle body frame is smaller than sizes of an acute angle θTR and an acute angle θTL which are defined by an expansion and contraction direction of telescopic elements and the up-and-down direction of the vehicle body frame, and an acute angle θSR and an acute angle θSL which are defined by axes of side rods and the up-and-down direction of the vehicle body frame. The sizes of the acute angle θTR and the acute angle θTL are greater than the size of the acute angle θL defined by the virtual plane perpendicularly or substantially perpendicularly intersecting with the upper axis and the lower axis of the cross member and the up-and-down direction of the vehicle body frame, and are equivalent to or smaller than the sizes of the acute angle θSR and the acute angle θSL.

A hydraulic excavator is equipped with a bucket, a tilt cylinder, a fourth stroke sensor, and a bucket information computing unit. The bucket is able to rotate about the center of a tilt axis. The tilt cylinder causes the bucket to rotate about the center of the tilt axis. The fourth stroke sensor detects a stroke length of the tilt cylinder. The bucket information computing unit obtains a tilt angle of the bucket on the basis of the stroke length detected by the fourth stroke sensor.

An interdental brush comprises a brush member (2) having bristle filaments (5) attached to a spine (4) which projects from a handle part (3). The handle part (3) comprises a main body and a resilient transition portion (7). The handle part (3) further comprises a hollow cavity (20), in the transition portion (7). The hollow cavity (20) improves the cushioning effect of the transition portion (7),and increases the length of stroke of the interdental brush by allowing the transition portion (7) to be deformed.

The invention provides a handhold electric massage rod with a variable stroke. The handhold electric massage rod with the variable stroke comprises a machine core shell body and a simulation phallus, wherein the simulation phallus is arranged at the left part of the machine core shell body in a sleeved mode, a micro direct current motor and a single-chip microcomputer control circuit panel are arranged inside the right part of the machine core shell body from left to right, a movable sliding block is arranged inside the left part of the machine core shell body, a ball screw rod is arranged in the movable sliding block, the left end of the ball screw rod is arranged at the left side inside the movable sliding block, the right end of the ball screw rod extends out of the movable sliding block and is connected with a transmission shaft of the micro direct current motor, the inside of the right end of the movable sliding block is connected with the ball screw rod through a plurality of balls and ball screw rod nuts, a sliding block position indication magnet is arranged at the bottom of the movable sliding block, a position measurement circuit panel matched with the sliding block position indication magnet is arranged inside the machine core shell body, and a plurality of magnetic induction Hall elements are arranged on the position measurement circuit panel. The handhold electric massage rod with the variable stroke is small in size, has various movement modes, and is convenient to carry and place.

A sliding device for a vehicle seat is provided with an improved locking arrangement. The locking arrangement includes a pair of locking assemblies, each including one or more locking pins suitable for locking upper rails of the seat tracks to respective lower rails. The locking arrangement also includes a releasing assembly suitable for driving the locking pins to an unlocking configuration and comprising a releasing member and a pair of connecting members, which are in a force transmission connection with the releasing member and with the locking pins of a respective locking assembly. The connecting members are entirely received within the respective tracks, and the releasing assembly is configured to convert a rotational movement of the releasing member into a linear movement of the locking pins of the locking assemblies.

Machine with an electromechanical converter, where a linear movable piston (30) is placed in a tubular cylinder casing (20). The piston supports a row of centrally placed annular permanent magnets (38) which produce an electromagnetic field of force. This is effective towards a surrounding row of annular coils (21). Such a machine can be driven as a motor or as a generator with a minimum of movable parts. At the ends of the closed cylinder is formed a chamber (40, 50), which forms a gas spring. In its simplest form the machine acts as a vibrator or as a vibration-driven generator. Additionally, to the gas springs, and at least at one end of the cylinder casing, can be placed a helical spring which ensures the central position of rest of the piston in the case of vertical installation. The piston can be connected to an axial bar (34) which is lead out of the machine on its one end for transmission of kinetic energy to or from the machine.

The invention provides a hydraulic self-sealing plunger oil pump, for thoroughly solving the friction problem between sucker rod and oil pipe, comprising plunger, pump barrel and traveling valve, where central rod sieve tube of the plunger is jacketed with a seal elastomer layer, the seal elastomer is jacketed with rigid metal ring and elastic seal ring. In the up-stroke course of the oil pump, the high pressure in the plunger acts through the seal elastomer onto the wearable elastic seal ring to reduce clearance between the seal ring and the pump barrel, strengthening seal and reducing leakage; in the down-stroke course, the pressures at two ends of the plunger are the same, the wearable seal ring contracts, increasing the clearance and reducing down-going resistance of the plunger. And the seal ring structure of the invention is applied to all hydraulic-plunger or multi-plunger pumps, having advantages of reducing the leakage of pump, raising volume of pump and efficiency of pump, etc.