289results about How to "Counteract vibration" patented technology

An L-shaped tube has a horizontal member that fits into a trailer hitch, and a vertical member. A platform is secured to a post that fits into the vertical member. The platform has bolt holes arranged to engage a variety of commercial clay target throwers and a gun/pistol rest. A threaded dowel is inserted through the a 180 degree horizontal slot in the vertical member, and screwed into a threaded hole in the post, thereby limiting the range the platform post can swivel within the vertical member. The dowel can be tightened to lock the post between zero and one-hundred-eighty degrees. A tension cable secures the vertical member to the vehicle to attenuate vibrations. A gun/pistol rest configured to mount from the platform has a forward cradle for a gun stock or barrel, and rear mount that variously functions as a rifle-butt cradle or a pistol-butt support.

An external rearview mirror assembly comprises an arm assembly comprising a pair of parallel support arms rigidly attached to a pivot tube which connects the arm assembly to a base. The pivot tube is held to the base in a cradle which is securely holds the arm assembly to the base while enabling the arm assembly to pivot relative to the base. A motorized powerfold mechanism is used to fold the reflective element assembly against the vehicle, and a motorized powerextend mechanism is used to adjust the position of the reflective element assembly outwardly of the vehicle.

An apparatus for detecting flashback occurrences in a premixed combustor system having at least one fuel nozzle includes at least one photodetector and at least one fiber optic element coupled between the at least one photodetector and a test region of the combustor system wherein a respective flame of the fuel nozzle is not present under normal operating conditions. A signal processor monitors a signal of the photodetector. The fiber optic element can include at least one optical fiber positioned within a protective tube. The fiber optic element can include two fiber optic elements coupled to the test region. The optical fiber and the protective tube can have lengths sufficient to situate the photodetector outside of an engine compartment. A plurality of fuel nozzles and a plurality of fiber optic elements can be used with the fiber optic elements being coupled to respective fuel nozzles and either to the photodetector or, wherein a plurality of photodetectors are used, to respective ones of the plurality of photodetectors. The signal processor can include a digital signal processor.

A cooler for a semiconductor-module includes: a heat sink which has an appearance of a cuboid structure to one side of which a flow rate control plate is fixed; a thermal radiation plate on an outer surface of which semiconductor devices are bonded; and a tray-shaped cooling jacket having: a coolant introduction channel; a coolant extraction channel extending in parallel to the coolant introduction channel; and a cooling channel provided between the coolant introduction and extraction channels. The heat sink is provided in the cooling channel of the cooling jacket so that the flow rate control plate extends in a boundary between the coolant extraction channel and the cooling channel, and channels provided for the heat sink extend orthogonally to the coolant introduction and extraction channels. The thermal radiation plate is fixed so as to close an opening the cooling jacket.

A two-phase switched reluctance motor in an embodiment includes a plurality of salient rotor poles that each have asymmetric reluctances about a central radial axis of the respective rotor pole. Each of the rotor poles has the same width, and the rotor poles are operable to provide preferential torque generation in one direction of rotation for all rotor positions. Such preferential torque generation occurs under the influence of an electromagnetic flux, which is provided by a plurality of salient stator poles having substantially the same width as the rotor poles.

The invention provides a drilling machine for hardware manufacturing and relates to the technical field of hardware manufacturing equipment. The drilling machine for hardware manufacturing comprises abaseplate, a polishing device is fixedly arranged at the top of the baseplate and comprises a mounting plate, and a rack is fixedly arranged at the top of the mounting plate; a first machine box is fixedly arranged at the left side of the rack, and a first motor is fixedly arranged in the machine box through a motor mounting block. According to the drilling machine for hardware manufacturing, through cooperation of the rack, the first motor, a rotation rod, a first bearing, a sliding ring, a guide rod, a guide ring, a fixing rod, a hydraulic retractable rod and a polishing motor, the slidingring is in threaded connection with the rotation rod, and therefore when the first motor drives the rotation rod to rotate, the sliding ring can drive the polishing motor at the bottom of the slidingring to move left and right; meanwhile, the polishing motor can be moved up and down through the hydraulic retractable rod so that drilling operation on hardware can be conducted, and the drilling machine is convenient to adjust and use during use and helps to improve the efficiency of machining and manufacturing the hardware.

A starter for cranking an internal combustion engine is mainly composed of an electric motor and a magnetic switch having a battery bolt connected to an on-board battery and a motor bolt connected to the electric motor. When the magnetic switch is closed, electric power is supplied to the electric motor to thereby generate a rotational torque for cranking the engine. One end of a motor terminal is electrically connected to the motor bolt, and the other end is led into a motor casing through a rubber insulator supported on the motor casing. The motor terminal includes one or more curved portions having resiliency, and they are positioned between the rubber insulator and the motor bolt. Water penetration into the motor casing is prevented by the rubber insulator, and the vibration of the motor terminal is alleviated by resiliency of the curved portions.

In a terminal block 10 which is interposed between a motor case 100 and an inverter case 200 placed in the motor case 100 and connects a motor input terminal to an inverter output terminal, an upper base 10U for accommodating an inverter side connecting terminal 20T connected to the inverter output terminal is fixed to the inverter case 200, and a lower base 10D for accommodating a motor side connecting terminal 20M is fixed to the motor case 100, and a waterproof and elastic member 60 is interposed between the upper base 10U and the lower base 10D and the motor side connecting terminal 20M is connected to the inverter side connecting terminal 20T by a flexible conductive member (a braided wire) 20H.

An oil-cooled 50 DN stator terminal insulator comprising an insulating base member with an insulating bushing extending from a top surface of the base member for insulating one of multiple stator lead terminals, and associated parts kit. The insulator includes a central aperture for receiving the terminal such that the insulator and the terminal are independently movable with respect to the remaining terminals of the stator in order to facilitate assembly of the stator and a rectifier housing having a plurality of openings extending from an internal surface to an external surface. The ability of the terminal with the insulator to move independent of the remaining terminals provides the stator with resistance to vibrations.

The invention relates to a parallel dual-engine coaxial unmanned helicopter, belongs to the technical field of aircraft and aims to solve the problems that the prior aircraft is poor in carrying capacity and low in reliability. Two engines are symmetrically arranged and fixedly connected to the lower portion of a connection frame; a power coupler is fixedly connected to the middle of the connection frame; a reducer is fixedly connected to the upper portion of the connection frame; four belt drive sets are symmetrically arranged; each belt drive set is connected with an engine output shaft, a power coupler input shaft, a power coupler output shaft and a reducer input shaft on one side of the belt drive set; power of the two engines is decelerated by the belt drive sets, is collected and outputted by the power coupler, is transmitted to the reducer through the belt drive sets, and is transmitted to upper and lower rotors through two coaxial hollow spindles. Variable pitches of the upper and lower rotors are controlled through two independent pitch varying sets respectively. Power is centrally output after the power of the two engines is coupled; the parallel dual-engine coaxial unmanned helicopter is high in reliability, simple to control and reloadable.

There is provided a connector capable of being simply and easily connected without loss of electrical continuity even in a harsh environment. In an electrical connector 100, a female housing 200 is made to mate with a male housing 400. The female housing 200 has guide ways 210 each formed perpendicularly to a direction of mating of the male housing 400 with the female housing 200. In the guide ways 210, a latch metal 300 is disposed. The guide ways 210 of the female housing 200 respectively have opening portions 222 from each of which the corresponding latch part 315 of the latch metal 300 is capable of projecting toward the male housing 400. When the male housing 400 is inserted into the female housing 200, the latch parts 315 are respectively projected from the opening portions 222 of the female housing 200 toward the male housing 400. The latch parts 315 are respectively locked at predetermined inclined planes 410a formed on the male housing 400.