434 results about "Fork tuning" patented technology

A suitable contact state is attained by an always stable contact pressure between a male contact and a female contact which form a tuning fork type contact. For a contacts providing a tuning fork type contact 2 that attains a contact state by inserting a male contact 4 between a pair of beams 6a and 6b provided on a female contact 6, in the connected state, male contact 4 and female contact 6 are arranged so as to maintain a state wherein the width direction of the male contact is angled relative to the direction of separation of the beams 6a and 6b.

The tuning fork resonator (1) includes a base (4) from which first and second parallel vibrating arms (2, 3) extend, carrying a set of excitation electrodes (5, 6) for vibrating the arms at a fundamental frequency. Grooves (7, 8) are formed on at least one of the top or bottom surfaces of each of said arms. The vibrating arms have a generally tapered shape, and are extended by an enlarged flipper shaped portion (9, 10) which forms the free end of each arm. The groove (7, 8) is extended in the direction of the free end of an arm to beyond the start of the flipper (9, 10) so as to increase said first motional capacitance of the resonator for the fundamental frequency, to decrease said second motional capacitance of the resonator for the partial frequency and to ensure better distribution of mechanical stress along the vibrating arms and to increase shock resistance.

A single-gate FinFET structure includes an active fin structure having two enlarged head portions and two respective tapered neck portions that connect the enlarged head portions with an underlying ultra-thin body. Two source / drain regions are doped in the two enlarged head portions respectively. An insulation region is interposed between the two source / drain regions. A trench isolation structure is disposed at one side of the tuning fork-shaped fin structure. A single-sided sidewall gate electrode is disposed on a vertical sidewall of the active fin structure opposite to the trench isolation structure.

A dual vertical channel transistor includes a tuning fork-shaped substrate body; a buried bit line embedded at a bottom of a recess between two prong portions of the tuning fork-shaped substrate body; an out-diffused drain region adjacent to the buried bit line in the tuning fork-shaped substrate body; a source region situated at a top portion of each of the two prong portions of the tuning fork-shaped substrate body; an epitaxial portion connecting the two prong portions of the tuning fork-shaped substrate body between the out-diffused drain region and the source region; a front gate situated on a first side surface of the tuning fork-shaped substrate body; and a back gate situated on a second side surface opposite to the first side surface of the tuning fork-shaped substrate body.

A vibration gyro sensor is provided which is capable of generating time information and detecting an angular velocity. A driving signal for driving a tuning fork piezoelectric vibrating reed is generated based on an excitation signal generated by an oscillation circuit. An angular velocity signal is obtained based on a detection signal generated by a detection electrode of the tuning fork piezoelectric vibration reed. The excitation signal generated by the oscillation circuit is input to a divider such that a timer clock signal is generated.

A timepiece oscillator including a resonator formed by a tuning fork which includes at least two mobile oscillating parts, fixed to a connection element by flexible elements whose geometry determines a virtual pivot axis having a determined position with respect to this connection element and around which the respective mobile part oscillates, and the center of mass of the mobile part coincides in the rest position with the respective virtual pivot axis, and, for at least one of the two mobile parts the flexible elements are formed of intersecting resilient strips extending at a distance from each other in two parallel planes, and whose directions, in projection on one of the parallel planes, intersect at the virtual pivot axis of the mobile part.

Piezoelectric vibrating pieces are disclosed. An exemplary piece includes a base and at least a pair of vibrating arms connected to the base. The vibrating arms extend from one end of the base in a first direction. A vibrating root portion is situated between the vibrating arms. A pair of supporting arms extend, outboard of the vibrating arms, in the first direction from the one end of the base. Respective supporting root portions are situated between each vibrating arm and its outboard supporting arm, at the same position (denoted, e.g., K1, K2) in the first direction of the vibrating root portion.

The invention relates to a mechanical resonator having a tuning fork for a clock movement having a lever escapement, comprising a tuning-fork oscillator (1), at least one first arm (3) of which is to be oscillated on either side of a first axis and has at least one first pin combined with at least one first fork tooth of an anchor (10, 100) so as to pivot the latter between first and second angular positions, and alternately lock and release an escape wheel (24). The resonator comprises a conversion member (6, 7, 8, 15, 16) which is secured to the first pin and which is arranged to: convert the oscillations of the first arm (3) of the oscillator (1) into rotational movements of the anchor (10, 100) by transmitting first pulses to the latter; and transmit mechanical energy from the anchor (10, 100) to the first arm (3) of the oscillator (1) in the form of pulses such that the first tooth has an amplitude of movement that is either axial or substantially in the direction of the first axis during the pivoting of the anchor, said amplitude of movement being greater than the amplitude of movement of the first pin substantially in the direction of the first axis.

The invention discloses municipal road indicating equipment for the sponge city. The municipal road indicating equipment for the sponge city comprises a support pillar, wherein an indicator plate is fixedly connected to the side wall of the support pillar; a dust prevention mechanism is arranged on the side wall of the indicator plate and comprises an installation box; the installation box is fixedly connected to the side wall of one end, far away from the support pillar, of the indicator plate; openings communicating with the outside are formed in the front side wall and the back side wall ofthe installation box; an installation rod is fixedly connected to the inner wall, close to the bottom end, of the installation box; a rubber barrel is fixedly connected to the upper wall of the installation rod; a tuning fork is fixedly connected into the rubber barrel; furs are fixedly connected to the side wall of the tuning fork; multiple ventilation holes are formed in the side wall of one end, far away from the indicator plate, of the installation box; and a reciprocating screw rod is rotatably connected to the upper wall of the installation rod through a bearing. According to the municipal road indicating equipment for the sponge city provided by the invention, the amount of dust attached to the side wall of the indicator plate can be greatly reduced, and the indicator plate can beautomatically cleaned, so that time and effort are greatly saved, and the personal safety of people and the normal passage of traffic are further ensured.

A method for manufacturing a quartz crystal unit comprises forming a quartz crystal tuning fork resonator that is capable of vibrating in a flexural mode of an inverse phase and that has a quartz crystal tuning fork base, and first and second quartz crystal tuning fork tines connected to the quartz crystal tuning fork base. An electrode is disposed on each of two of side surfaces of each of the first and second quartz crystal tuning fork tines so that the electrodes of the first quartz crystal tuning fork tine have an electrical polarity opposite to an electrical polarity of the electrodes of the second quartz crystal tuning fork tine, a motional capacitance C1 of a fundamental mode of vibration of the quartz crystal tuning fork resonator being greater than a motional capacitance C2 of a second overtone mode of vibration thereof.