465 results about "Artificial muscle" patented technology

A flexible actuator assembly (20) including a flexible bladder device (22) having an expandable sealed chamber (23) adapted to substantially directionally displace between a deflated condition and an inflated condition, displacing a proximal portion (25) of the bladder device (22) away from a distal portion (26) thereof. An elongated tendon member (27) includes a distal portion (28) oriented outside the chamber (23), while an anchor portion (30) extends into the chamber (23) through a distal opening (31) in the bladder device (22). The tendon anchor portion (30) is further coupled proximate to the bladder proximal portion (25) in a manner adapted to: selectively invert displaceable portions (32) of the bladder device (22) when urged toward the deflated condition to position the anchor portion (30) and the bladder proximal portion (25) relatively closer to the bladder distal portion (26); and selectively evert the inverted displaceable portions (32) of the bladder device (22) when displaced toward the inflated condition which positions the anchor portion (30) and the bladder proximal portion (25) relatively farther away from the bladder distal portion (26) for selective movement of the tendon distal portion (28) between an extended condition and a retracted condition, respectively.

A biological function assist apparatus composed an electromechanically-based system wrapped in protective coating and controlled by a controller, which also provides power to the electromechanically-based system. The electromechanically-based system can be formed as a mesh using MEMS or a larger electromechanically grid and wrapped around a failing heart, or the electromechanical system can be formed in a circle forming an artificial valve (e.g., sphincter). The electromechanically-based system can operate as a bone-muscle interface, thereby functioning in place of tendons.

An artificial body wall is disclosed herein. The artificial body wall may include a first layer and a second layer. The first layer is substantially formed of a silicone rubber and includes at least one of an artificial epidermis-dermis layer or an artificial subcutaneous layer. The second layer extends along and below the first layer and is substantially formed of a silicone rubber. The second layer includes at least one of an artificial fascia layer or an artificial muscle layer. At least one of the first layer or second layer may be vascularized.

A motion assist apparatus is provided with an attaching member that has a glove shape with finger portions and a middle hand portion that is attachable to one of hands of a user, a back-side actuator that is freely expanded and contracted, and bridged between a tip of each of the finger portions and the middle hand portion on the back side of the attaching member, and a palm-side actuator that is freely expanded and contracted, and bridged between the tip of each of the finger portions and the middle hand portion on the palm side of the attaching member, and in this structure, the palm-side actuator is provided with a wire unit formed of two wires that are disposed on each of the finger portions on the palm side from the tip of each of the finger portions on the back side to the middle hand portion along the finger portion, passing through two side portions of the finger portion, so that intervals therebetween are made different at respective positions corresponding to joints of the finger portion, and rubber artificial muscle is coupled to the wire unit and is formed on the middle hand portion.

The present invention relates to a gripping device that consists of four artificial muscle rings arranged in parallel. A grasper is placed in the middle of the rings. Sequential activation of the rings produces a peristaltic motion that moves the grasper back and forth within the rings. By activating the grasper appropriately, it can grab, ingest, and move soft and irregular material from one side of the lumen formed by the rings to the other side.

Actuators (artificial muscles) comprising twist-spun nanofiber yarn or twist-inserted polymer fibers generate torsional and/or tensile actuation when powered electrically, photonically, chemically, thermally, by absorption, or by other means. These artificial muscles utilize non-coiled or coiled yarns and can be either neat or comprising a guest. Devices comprising these artificial muscles are also described.

The present invention relates to a combinatory muscle type flexible joint capable of bending toward several directions. It can be used as various joints of robot and artificial limb. Said flexible joint adopts the axial expasion of elastic corrugated pipe after which is forced by fluid pressure as muscle power, several artificial muscle components are formed into said flexible joint. It adopts plate spring or plate hinge as flexible joint skeleton capable of bending toward two directions, and adopts bar spring and ball universal joint or cross universal joint as flexible joint sekelton capable of bending toward several directions.

The invention discloses a joint used for a robot limb and relates to a three-dimensional composite flexible joint which is characterized in that several groups of extended artificial muscles are arranged between an upper flange and a lower flange; a framework is arranged in a cavity formed by the several groups of extended artificial muscles; the extended artificial muscle is as follows: a spring is arranged between an upper end cover and a lower end cover, a capsule is arranged in a tubular cavity formed by the spring, and the lower end cover is provided with a fluid inlet; the framework is made of a tubular spring and also can be a component formed by a movable pair and a spherical pair in series; and two ends of the framework are fixed on the upper flange and the lower flange of the joint. The three-dimensional composite flexible joint has the advantages that the three-dimensional composite flexible joint has small size and good flexibility; a drive set of the joint is combined with the joint as a whole; the three-dimensional composite flexible joint can realize axial elongation and curvature of space, can realize the complex action of a bionic artificial joint, act stably and is fit for capturing or conveying objects with irregular shapes; and the three-dimensional composite flexible joint has popularization and application values in the field of bionic and specific robot and has very good market prospect.

A wake absorber, wherein an aquatic vehicle with a propulsor mounted on the vehicle and operative to propel the vehicle through a water medium, has a wake absorber mounted on the vehicle aft of the propulsor. The wake absorber includes an artificial muscle surface adapted to be impinged upon by a wake created by the propulsor. The wake absorber further includes electrodes mounted on the artificial muscle surface. Pressure of the wake upon the muscle surface exercises a bending force on the surface, which creates energy that is recovered by the electrodes as electrical power that can be digitized. Energy removed from the muscle surface by the electrodes weakens the wake and renders the wake less pronounced visually and acoustically.

A biomimetic benthon fishing robot comprises a fishing robot body, four limbs based on artificial muscles and having two functions of seabed walking and benthon fishing, a pressure sensor used for sensing water depth, a digital compass used for detecting the walking direction of the fishing robot, a binocular stereoscopic panoramic visual sensor used for acquiring panoramic stereoscopic vision video images which are 360 degrees around the fishing robot, an intelligent body used for controlling the four limbs to harmonize seabed walking and for performing identification and spatial erientation to a fished object, autonomous navigation, fishing action controlling and information interaction with a mother ship on the water, and a navel cord for communicating with the mother ship on the water and connected with energy equipment supply equipment. The biomimetic benthon fishing robot provided by the invention has the advantages of good natural flexibility, simple mechanism, low control complexity, low manufacturing and maintenance costs, and high efficiency during the fishing process.

New artificial muscles and actuators, that are operated by hydrogen gas as working fluid stored interstitially in metal hydrides as a hydrogen sponge. These artificial muscles and actuators are operated both electrically and thermally. The artificial muscles and actuators have fast response, are compact/light-weight, are noiseless, and produce high-power density. They can be used for biomedical, space, defense, micro-machines, and industrial applications.

The invention discloses a human-simulated mechanical arm based on hybrid driving of various artificial muscles, which comprises a motor driving cradle head, a pneumatic muscle (PAM) bionic elbow joint, a shape memory alloy (SMA) bionic wrist joint and an IPMC bionic hand, wherein a shoulder joint has two rotational degrees of freedom; the elbow joint has three rotational degrees of freedom; the wrist joint has two rotational degrees of freedom; and the bionic hand has four fingers and eleven degrees of freedom, so that the mechanical arm has eighteen degrees of freedom. The cradle head is connected with the elbow joint through a shaft, the elbow joint is fixedly connected with the wrist joint through three bolts, and the wrist joint is fixedly connected with the bionic hand through a screw thread. Compared with a motor driving mechanical arm with the same specifications, the mechanical arm disclosed by the invention has the advantages of simple structure, high power-density ratio, good safety, high flexibility and the like, and the mechanical arm is enabled to have better flexibility and bionics characteristics through simulating a bone-muscle system of an upper limb of the human body. The human-simulated mechanical arm disclosed by the invention can be widely applied to the fields of home services, rehabilitation therapy, risk elimination and rescue, material handling and the like.

The invention discloses a multi-degree-of-freedom hybrid drive artificial muscle. A polyethylene terephthalate (PET) woven mesh is mounted outside an elastic rubber hose, two ends of the elastic rubber hose are sealed by the aid of outer clamps and inner plugs, a front-end fixing frame and a pneumatic joint are mounted on the inner plug at the front end, a back-end fixing frame is mounted on the inner plug at the back end, three guide frames are longitudinally arranged between the two fixing frames at equal distances, and four shape memory alloy-nylon fishing line muscle fibers are evenly distributed between the two fixing frames in the circumferential direction. The initial weaving angle of the woven mesh on the outer side of the elastic rubber hose is set to be larger than 54 degrees, and the axial displacement and the axial push force are produced when the inside of the rubber hose is pressurized by air. The shape memory alloy-nylon fishing line muscle fibers are heated by pulse current, and thus bending deformation of the hybrid artificial muscle is realized. The artificial muscle has the positive effects that the drive characteristics of an elongation type pneumatic muscle are improved, the degree of freedom of the elongation type pneumatic muscle is increased, and the artificial muscle can be applied in the field of bionic robots requiring high-precision compliant drive.

A fluid contact surface actuation system for a vehicle, including a first fluid contact surface constructed and arranged to act against a first fluid passing over the first fluid contact surface; and a first fluid actuator coupled to the first fluid contact surface to move the first fluid contact surface between a first position and a second position to enable control of the vehicle in a predetermined manner, the first fluid actuator having a first resilient bladder that receives a second fluid such that pressure of the second fluid moves the first bladder between a contracted configuration and an expanded configuration.

Synthesis of warm sensitive aquagel from ultraviolet light radiation polymerization is carried out by adding reacting raw materials into deionized water to prepare preformed solution, laying aside under ultraviolet light radiation, exposing, polymerizing directly to prepare cross-linking polymer, putting the polymer into sorbitic extractor, extracting from boiled deionized water for 24hrs, taking it out, and drying in vacuum drier to obtain warm sensitive aquagel. Its low critical temperature varies between 30-40 Deg C. with raw material formula. It can be used for various aquagels, medicine control-releasing system, memory element switch, artificial muscle and chemical industrial separation. It achieves low cost, simple process, high efficiency and normal-temperature operation.

The invention discloses a new photo-induced deforming liquid crystal macromolecular material in liquid crystal macromolecular material technical domain, which is characterized by the following: choosing ethoxyl group as main chain and azo-benzene derivant as lateral chain with part crosslinking; choosing azo-benzene derivant of monocyclic oxygen group and bicycle oxygen group as monomer; mixing finite quantity light trigger and trigger of positive ion; putting into reactor; choosing proper reacting temperature; copolymerizing the light trigger positive ion under the function of wavelength light; getting the product. This material is a controlled photo-inducer flexural deformation material, which can be used to study driver and artificial muscle.

A display apparatus includes a flexible display panel; an image processing board configured to output a video signal to the display panel; and a support member provided between the display panel and the image processing board and configured to support the display panel, the support member including: at least two plates arranged along one side of the display panel; and at least one artificial muscle connecting the at least two plates and configured to be deformed to change a shape of the support member in accordance with a voltage applied thereto.

The invention provides an exoskeleton-type hand function rehabilitation robot, relates to medical instruments applied in injured finger rehabilitation, and aims to solve the problems that according to an existing hand function optimizing and recovering manner, hand rehabilitation is difficult, the rehabilitation period after treatment is long and hand functions are influenced. The exoskeleton-type hand function rehabilitation robot comprises an exoskeleton finger drive mechanism, a self-adaptive dorsal metacarpal adjusting platform and a rear artificial muscle module. The exoskeleton finger drive mechanism comprises an exoskeleton thumb, an exoskeleton index finger, an exoskeleton middle finger, an exoskeleton ring finger and an exoskeleton little finger. Proximal interphalangeal exoskeleton joints are arranged between metacarpophalangeal exoskeleton joints and distal interphalangeal exoskeleton joints, and the proximal interphalangeal exoskeleton, the metacarpophalangeal exoskeleton joints and the distal interphalangeal exoskeleton joints are in slidable connections detachably. The self-adaptive dorsal metacarpal adjusting platform covers the upper surface of the exoskeleton finger drive mechanism, and the self-adaptive dorsal metacarpal adjusting platform and the exoskeleton finger drive mechanism are in slidable connections detachably. The exoskeleton-type hand function rehabilitation robot is applied in injured finger rehabilitation.