49results about How to "Avoid unnecessary damage" patented technology

The cap is a durable flexible head covering foundation article to be used on the head of a person under an artificial head covering. The body is dome shaped and contains a smooth inner layer to protect the natural hair and hairline and to retain/provide moisture to the natural hair thereby lessening breakage along the hairline and the hair itself that can be caused by artificial head coverings. The body also includes a smooth or textured outer layer with notches above/framing the top of the ears enabling it to conform to the head of the wearer. The body further includes a reinforced rim allowing for lasting or durable stretch memory of the perimeter of the cap. The present invention contains zero to multiple openings allowing for attachment of the artificial head covering to the natural hair of the wearer.

A scalpel for performing complex surgeries, such as c-sections, is formed of a body that is preferably elongated and shaped and sized to fit ergonomically into the hands of surgeons. The body has surfaces that are joined to each other by smooth transition elements to insure that the body has no points or sharp edges that could cut or scratch the surgeon or the patient. The body is formed with a triangular notch formed of a beak and an extension. A surgical blade, preferably a standard off-the-shelf surgical blade, is imbedded in the body and the only portion of the blade that is accessible is a portion of its cutting edge spanning the notch. The scalpel is used by introducing the beak into a slit in the tissue with the blade portion facing the direction in which the cut is to be made. The body of the scalpel is then grasped firmly and advanced to make the cut. The initial incision can be made with the tip of the beak.

The invention provides a motor state determining method. When a frequency converter is used for driving a motor, the motor state determining method comprises: sampling the frequency and a current value of the output current of the frequency converter; drawing an approximate sinusoidal changing curve of the output current according to the sampled frequency and the current value of the output current; and when an abnormality (overcurrent) occurs to the output current of the frequency converter, determining the running state of the motor by determining whether the actually-measured current value of the output current is on the drawn approximate sinusoidal changing curve, and if yes, determining that the motor is in a stalling state, or if not, determining that the motor is in an overexcitation state.

A spacer used for maintaining an interval between spinous processes of spine, capable of preventing unnecessary damage to vertebras, simplifying the surgical operation, and reducing the time taken for the surgical operation by implementing a new vertebra fastening means for strongly maintaining a state of extending an interval between spinous processes by using a shape memory material which can be restored by body temperature. In addition, such a spacer may be capable of easily insertion in a lateral direction, thereby reducing a cut portion for the surgical operation and avoiding unnecessary cutting of a ligament fastening the spinous processes. In addition, there is provided a spacer for use in a surgical operation for spinous processes of spine, capable of enabling the spine to move according to patient's movement by providing an elastic vertebra fastening means, so that the patient can move smoothly after the surgical operation.

A plug-in power supply for a refrigerator used to charge portable electronic devices includes an auxiliary power supply mounted in an auxiliary power supply compartment, and a removable module, having an electrical connector, mounted in an electrical connector cup. A portable electronic device is charged by placing the device in the connector cup and coupling the device to the electrical connector. Power is then supplied from the auxiliary power supply to the portable electronic device.

A trocar includes a puncturing device and a sleeving component. The puncturing device includes a base and a puncturing portion. The puncturing portion includes a bump and a tip. The bump extends from an outer surface of the puncturing portion radially. The sleeving component includes a gas pressure base, a first tube assembly, a second tube assembly, and a fixation base. The second tube assembly is retractable. The fixation base is fixed to the second sleeving end and includes a guiding groove and a key groove. The guiding groove communicates the key groove. While the bump of the puncturing device is entered through the guiding groove, and the puncturing device is rotated to have the bump be in the key groove, the puncturing device is secured to the fixation base, and the puncturing device drives the fixation base to move along an elongated direction of the puncturing device.

A system for delivering light to a curved surface of a tissue of a subject. The system includes a light source; an optical coupler coupled to the light source; and a flexible waveguide coupled to the optical coupler. The waveguide has a first end and a second end with an elongated flat portion therebetween. Light from the light source is emitted substantially uniformly from along the elongated flat portion of the flexible waveguide, thereby delivering light substantially uniformly along the curved surface of the tissue.

A magnetic switch controlled circuit for an electrical appliance includes a voltage input terminal, a voltage output terminal, a magnetic switch, a relay circuitry and a turn-off delay circuitry. When the magnetic switch detects a first change in the magnetic field from an idle status, the relay circuitry is configured to output an output voltage to the voltage output terminal so as to supply power to the electrical appliance. When the magnetic switch detects a second change in the magnetic field from the first change in the magnetic field, the turn-off delay circuitry is configured to control the relay circuitry to continue outputting the output voltage to the voltage output terminal for a predetermined period of time, the relay circuitry being switched off by the turn-off delay circuitry after the predetermined period of time elapses.

The invention relates to a low-frequency focus ultrasound-generating device and its application in clinical physical therapy to cause embolism of new blood vessels of tumor. The device comprises a hand grip, an ultrasound output, a half-ellipsoid reflector, and a water sack. The half-ellipsoid reflector is disposed on the forward end of the hand grip. The rear part of the ultrasound output is set in the hand grip, while the front part of the ultrasound output is set in the half-ellipsoid reflector. On a lateral side of the ultrasound output in the front of the hand grip, there is a tie-in for water infusion and gas exhaust. The inner portion of the tie-in is in communication with the inner portion of the half-ellipsoid reflector. At an opening on the forward end of the half-ellipsoid reflector is disposed the water sack. The front face of said ultrasound output lies in a focus of the half-ellipsoid reflector.

The invention relates to a delivery error detection device, which comprises an upper die and a lower die, wherein the inside of the upper die is connected with a liner spring, the other end of the linear spring is connected with a protection needle, the protection needle is provided with a groove, one side of the protection needle is provided with a limiting switch, and the limiting switch is embedded inside the groove of the protection needle. After the detection device is added, when a material cannot be delivered to a scheduled position, a punching machine can be stopped in time. The safety of the mold is improved, unnecessary damage of the mold can be effectively avoided, the product quality can be greatly improved, and the efficiency can be improved by 40 percent.

A switching power supply includes: a switching device connected between a power supply input terminal and a ground terminal via an inductance element; an output circuit that generates a prescribed output voltage by rectifying and smoothing current obtained from the inductance element as the switching device is switched ON and OFF; an output voltage control circuit that controls an ON time of the switching device on the basis of a feedback voltage obtained through the output voltage of the output circuit; and a short-circuit detection circuit that outputs a short-circuit detection signal by detecting short-circuits in the switching device on the basis of a voltage applied to a control terminal of the switching device when the switching device is ON, the short-circuit detection signal being used to control operation of the output voltage control circuit so as to gradually reduce the ON time of the switching device.

A pet locator comprises an upper shell, a lower shell and a mainframe; the upper shell is connected with the lower shell to form an installation cavity. The mainframe is installed in the installation cavity; the left and right sides of the bottom of the lower shell are symmetrically provided with a hinged seat, and the hinged seat is hanged with a wearable piece, the hinge joint of the wearable piece and the hinged seat is provided with a torsional spring, one end of the torsional spring is jammed at the hinged seat, the other end of the torsional spring is jammed at the wearable piece; when the wearable piece is rotated by manpower, the torsional spring is rolled tightly, when the wearable piece is not rotated by manpower, the torsional spring is relaxed, and the back force of the torsional spring drives the wearable piece to rotate back.

The invention provides a device for fitting into a hollow component to provide an indication of whether the hollow component has been deformed, which includes a frame which can be fitted in the) component, and an elongate indicator suspendedly connected to the frame, with any deformation of the frame being visualised as a deflection of the indicator.

A nail tip curing composition includes an Extend Gel, an edge-off flat brush, a nail filing device, a plurality of GEL-X tips, a pH Bonder, and a Non-Acidic Gel Primer. The pH Bonder forms a pH Bonder layer on a surface of a fingernail. The Non-Acidic Gel Primer forms a Non-Acidic Gel Prime layer overlapped on the pH Bonder layer. The Extend Gel forms an Extend Gel layer overlapped on the Non-Acidic Gel Prime layer. The GEL-X tip is filed by the nail filing device and the Extend Gel is applied on an underside contact surface of the Gel-X tip by the edge-off flat brush. The underside contact surface of the Gel-X tip is contacted with the Extend Gel layer on the fingernail in such a manner that the Gel-X tip is firmly affixed on the fingernail.

The invention discloses an integrated circuit convenient for accessing and installing. The integrated circuit comprises a housing, and an integrated circuit body fixed in the housing, wherein the integrated circuit body comprises resin, a packaging member and a crystallization sheet installed in the packaging member, the resin is fixedly capped on the upper end of the crystallization sheet, metallic sheets are uniformly and fixedly connected to the lower end of the housing, insulating sleeves fixedly sleeve the upper ends of the metallic sheets and the upper end of the housing is fixedly connected with a clamping block. A fixed adhesive tape is bonded to the upper end of the clamping block and comprises a fixed adhesive sheet and adhesive surfaces, and the fixed adhesive sheet is arranged in the center of the fixed adhesive tape, and the adhesive surfaces are symmetrically fixed on the two sides of the fixed adhesive sheet. Sealing labels are attached to the upper surface of the adhesive surfaces. The integrated circuit is convenient for accessing and installing, and may not fall due to external force after installation is completed.

The present invention teaches an animal-shaped protector for golf clubs comprising a head enclosure having a mouth; and a shaft clamp; wherein the head enclosure and the shaft clamp are formed integrally; the head enclosure comprises a first shell having a first shell inner surface and a first shell outer surface; the first shell inner surface defines a cavity for receiving and protecting the head of a golf club; the shaft clamp comprises a body and a plurality of fastenings; the fastenings each have an elastic band attached at one end to said body and at the other end to a joining element being a part of the fastening; and the joining elements can be easily connected to and disconnected from each other.