Abstract: The present invention is a golf putter having a putter head which is vertically sliced from the sole all the way into the neck to form first and second opposing portions Those portions produce tuning fork effects which are shaft vibrations and the corresponding tone A golfer using the touch and sound can develop a reproducible and therefore more accurate putting stroke Additionally, the tuning fork configuration allows putter head flexing which imparts extra velocity to the golf ball

Abstract: The use of double-ended tuning fork (DETF) resonators as force transducers has, in recent years, been increased due to their inherent stability, low hysteresis and their virtually digital output. The transducer whose characteristics are described here was designed for a 50 N applied force. The results indicate the open-loop and closed-loop operation of the device, and the preferred method of drive and pick-up is described. The performance of the sensor is tested using a highly accurate dead-weight system. The results confirm the superior performance of the DETF resonator over the strain gauge in force measurements.

Abstract: A scanning microscope comprises a sample supporting member on which a sample is supported, an optical device which irradiates a light beam to the sample, and a movement mechanism which moves the optical device with respect to the sample supporting member such that the light beam scans the sample. A device photoelectrically detects light radiated out of the portion of the sample, which is exposed to the light beam, an image of the sample being thereby formed. The movement mechanism for moving the optical device or the sample supporting member is constituted of a tuning fork on which the optical device or the sample supporting member is supported, and an excitation device for applying force, the magnitude of which changes periodically, to the tuning fork, and thereby causing the tuning fork to resonate.

Abstract: The invention relates to an electrode pattern arranged on the freely vibrateable legs on a tuning fork-controlled gyro. The electrode pattern comprises drive electrodes for generating a vibration in the legs of the tuning fork and sensing electrodes for sensing vibrations which occur in the legs. The sensing electrodes comprise a first electrode configuration (sensor electrodes) for sensing vibrations either out of the plane (24, 25, 26, 27) or in the plane (7, 8, 9, 10, 11, 12) of the tuning fork and a second electrode configuration (feed back electrodes) for sensing vibrations in the plane (34, 35, 41, 42) or out of the plane, (9, 10, 11, 12) of the tuning fork, for controlling the driving of the tuning fork in the plane or out of the plane, respectively.

Abstract: An angular rate sensor of the type, using oscillation of piezoelectric elements, which includes a pair of sensor elements each including a vibratory piezoelectric detecting element and a vibratory piezoelectric drive element joined together by a joint member in longitudinal alignment and oriented substantially at right angles relative to each other, and a resilient joint member joining the pair of sensor elements at respective free ends of the drive elements so as to form, jointly with the sensor elements, a tuning-fork structure. The turning-fork structure has an improved joint structure between each of the driving elements and the resilient joint member, which has a thickness to width ratio of approximately 3:10 to 7:10 to enable the angular rate sensor to have a low resonance impedance and stable performance characteristics.

Abstract: PURPOSE:To decrease in the dispersion in the apex temperature of a crystal resonator by regulating a time of crystal etching so as to regulate the apex temperature of the temperature characteristic. CONSTITUTION:The apex temperature Tp of the temperature characteristic is adjusted by controlling the tine for crystal etching in the manufacture of a turning type crystal resonator of several tens kHz - several hundreds kHz. That is, the apex temperature Tp varies with the etching time in the region (A) and is almost unchanged in the region (B), then the apex temperature Tp is freely changed by adjusting the etching time in the region (A). Thus, the dispersion in the apex temperature Tp of the crystal resonator is decreased and the crystal resonator with an object apex temperature Tp is easily manufactured.

Abstract: PURPOSE:To quicken the machining time, to allow a metallic chip to be hardly caused, and to facilitate automation and highly accurate machining by machining both front and rear sides of a piezoelectric oscillation chip. CONSTITUTION:A mask is employed to allow an excimer laser beam to radiate to a frequency adjustment section (F adjustment section) 3 of a tuning fork piezoelectric oscillation chip 1 for the implementation of the machining. A laser beam-irradiating from an excimer laser 4 is separated in two directions by a half mirror 5. One laser beam irradiates on the surface of the tuning fork piezoelectric oscillation chip 1 to machine the chip 1. The other laser beam is separated by the half mirror 5, is reflected in a mirror 6 and irradiates to the rear side of the tuning fork oscillation chip. The F adjustment section 3 of the tuning fork piezoelectric oscillation chip 1 is machined from the front and rear sides in this way, the machining time is quickened, a metallic chip is to be hardly caused and the automation and highly accurate machining are facilitated.

Abstract: PURPOSE:To secure the wide scanning width of lighting beams and to pick-up the image of the wide area of a sample by holding an optical probe at the head part of a tuning fork composed of a magnetic substance and operating a magnetic field, which strength is periodically changed, from an electromagnet. CONSTITUTION:A probe 15 is fixed to the head part of a tuning fork composed of the horizontally arranged magnetic substance in the state of making the optical axis of an optical system vertical. This tuning fork 30 is vibrated with the fixed number of peculiar vibrations while fixing a base part 30a to a pedestal 32. Inside the tuning fork 30, an electromagnet 31 is arranged with a little space to both head parts, and a rectangular pulse current E having a frequency equal to the peculiar vibration number of the tuning fork 30 is impressed from a driving circuit 33. Thus, since the magnetic field is intermittently operated to both terminal parts of the tuning fork 30, the probe 15 is horizontally and reciprocatively moved at high speed while being vibrated with the peculiar vibration number, and optical points are mainly scanned. Namely, when the tuning fork is resonated, a much larger amplitude is obtained in comparison with the case of vibrating the optical system or the sample stand by a piezoelement or a ultrasonic vibrator, etc.

Abstract: An electrostatic measuring apparatus for measuring unknowns such as the electrostatic potential of a surface in a non-contacting manner, including a tuning fork and a sensing electrode, and in which the frequencies of two different vibration modes of the fork are separated by a slotted supporting structure which is united with the fork, and in which harmful amplitudes of vibration of the fork are avoided by an amplitude limiting structure integral with the sensing electrode. The amplitude limiting structure includes arms extending around the ends of the tines.

Abstract: PURPOSE:To improve the shape of a broken end by mounting a wafer on a flat plate, clamping the wafer by a toothed vacuum chuck, and chucking the wafer while feeding it laterally and disconnecting a single vibrator body CONSTITUTION:Tuning fork type vibrator bodies 4 are broken, one by one, by the toothed vacuum chuck 1 Namely, the crystal wafer (frame) 3 is fixed to a plate 13 with a pin, etc The toothed vacuum chuck 1 moves finely as shown by an arrow 7 to clamp a single tuning fork type vibrator body 4 with the plate 13 and then moves as shown by an arrow 8 to break the cutoff part 3' of the single tuning fork vibrator body 4 and chuck and convey the body to a next process Consequently, the shape of the peck broken end is improved

Abstract: A pressure is measured by obtaining a difference between an actual resonance resistance of a tuning fork oscillator subjected to the pressure and a natural resonance resistance of the tuning fork oscillator, and then applying the difference to a predetermined relation to obtain a measurement of the pressure. Variations in the natural resonance resistance of the tuning fork oscillator due to temperature variations of the tuning fork oscillator are compensated for by measuring a resonance frequency of the tuning fork oscillator and then determining the natural resonance resistance of the tuning fork oscillator from the resonance frequency based on a predetermined relation between the resonance frequency and the natural resonance resistance of the tuning fork oscillator. The resonance frequency of the tuning fork oscillator is indicative of the temperature of the tuning fork oscillator.

Abstract: PURPOSE:To realize a tuning fork type bending crystal resonator with a small equivalent series resistance by adopting the constitution such that a 1st connection part connecting other end of two turning forks is vibrated freely in the lengthwise direction of the tuning fork bending mode and mounting the resonator with a 2nd connection part. CONSTITUTION:A tuning fork resonator 1 consists of two tuning fork arms 2, a 1st connection part 3, a projection 5 and a 2nd connection part 4 and they are formed integrally with the etching method. One end of the two tuning fork arms 2 connects to a 1st connection part 3, a projection part 5 is provided to both ends of the 1st connection part 3 and connected by the 2nd connection part 4. The bending vibration of the tuning fork arm is vibrated in the lengthwise direction and since a face perpendicular to the 1st connection part in the lengthwise direction of the tuning fork arms is free, the vibration is implemented freely without suppressing the vibration of the tuning form arms. Thus, the tuning fork type bending crystal resonator with very small equivalent series resistance R1 is obtained.

Abstract: PURPOSE:To obtain a general use traveling-wave motor easily at low cost by a method wherein the rotor of the motor is rotated by traveling-wave vibration, generated by an annular tuning fork based on the vibration of a piezo-electric oscillator polarized into one direction only. CONSTITUTION:When a driving signal, corresponding to a stationary wave A, is impressed on electrodes 18A, 18B, the part of a contacting piezo-electric oscillator 17 generates up-and-down expansion and contraction. The expanding and contracting operations are transmitted to vibration blocks 5A-5D through a supporting rod 15. A driving signal, corresponding to another stationary wave B, is impressed on other electrodes 19A, 19B and the expanding and contracting operations are transmitted to the other vibration blocks 6A-6D. A rotor 12 is rotated into a direction opposite to the direction of a traveling wave by traveling-wave vibration generated annularly in the vibration blocks 5A-5D, 6A-6D of an annular tuning fork 1. On the other hand, the rotating direction of the rotor 12 may be reversed by changing the phase difference between the stationary waves A, B at all times.

Abstract: PURPOSE:To realize a comparatively high frequency in the bending mode by constituting a vibration part with two rods, providing a support not suppressing the vibration at both ends and forming them integrally with the etching method. CONSTITUTION:A vibrator 1 consists of a vibration part 2, a support part 3, via a bridge part 4 and they are formed integrally with the etching method. When the same frequency as a tuning fork bending crystal resonator is obtained, the length of the rods is doubled and a longer shape than a conventional tuning fork is obtained. In order to make the vibration of the bending part 5 sufficiently free, a hole 7 is provided. Then the vibration of the vibrator part 2 in the direction of the bridge 4 is very small but vibrated in the bending mode and the hole 7 is connected to the frame 6 and prolonged to the mount part 8, then the energy of the vibration part is not delivered to the frame 6 and the bending crystal vibrator with no vibration leakage is obtained even when a lead wire or the like is fixed to the mount part 8.

Abstract: PURPOSE:To obtain an inching mechanism which stably and highly accurately operates by resonating a piezoelectric element so as to periodically move a moving body to be fixed to the piezoelectric element. CONSTITUTION:A probe stand 4 and a probe 3 fixed to the probe stand 4 are displaced in the direction indicated by the arrow (a) by resonating a tuning fork type piezoelectric element 1. Under this condition a rectangular parallelepiped type piezoelectric element 2 is displaced in the direction indicated by the arrow (b), and thereby the probe 3 scans a two-dimensional plane and operates as an STM inching mechanism. The period of operation of the probe 3 in the direction of the arrow (a) is set to high accuracy and high speed by the resonance frequency (e.g. 32768Hz) of the tuning fork type piezoelectric element 1 and the amount of displacement of the probe 3 has good reproducibility. Thereby an inching mechanism the period of operation of which is highly accurate and which provides good reproducibility of the amount of displacement by a small distance is obtained.

Abstract: PURPOSE:To obtain a resonator without leakage of resonance with small size and high Q by forming a bridge prolonged from a connection of an H type tuning fork comprising two rods connected together in the middle in the straightforward direction and a support to the end and forming the support so as to surround one of the H type tuning fork. CONSTITUTION:A vibrator 1 consists of a resonant part 2 and a support 3 via a bridge part 4 and they are formed integrally by the etching method. Both ends of the part 2 comprising two rods are connected to the support 3 (comprising a frame 5 and a mount part 6) via the bridge 4 and formed integrally by the etching method. In this case, the bridge 4 is formed at the same position of a connection part 7 in the middle of the rods in a direction orthogonal to the tuning fork shape. Thus, since the bridge is connected to the resonant part at the position when the displacement is almost zero, the energy transmission to the support is very small and the mount 6 formed to the end of the support 3 is fixed to a lead wire to obtain a bending crystal resonator without leakage of resonance.

Abstract: PURPOSE: To regulate the tension of a gut by providing a multiple tuning fork having a plurality of teeth closely to a rounded end part and applying the rounded part against the gut so that one tooth oscillates depending on the tension of the gut. CONSTITUTION: The inventive apparatus has one elongated end 1 and the other rounded end 2 formed to hit the gut of a racket. The apparatus is provided with a plurality of protrusions 3 on the side face and a multiple tuning fork 5 is provided at the part where the protrusions 3 are provided. A series of marks 7 corresponding to a plurality of teeth 6 of the fork 5, respectively, are put on the protrusions 3 and one tooth 6a of the tuning fork 5 oscillates when the end part 2 touches the gut of racket. Tension of the gut can be determined by detecting oscillation of the tooth 6a and associating the oscillation to the mark 7a.

Abstract: PURPOSE:To obtain a sufficient output voltage even when a source voltage is low by using a large-current, small-votage amplitude and a small-current, large-voltage amplitude operational amplifier CONSTITUTION:Charges generated on the surface of a monitor element are converted by an amplifier (A)21 into a voltage, which is rectified 22 and made by a smoothing circuit 23 into a DC voltage proportional to the amplitude of tuning fork vibration An amplifier A24 has its amplification factor depending upon the smoothing output voltage When the amplitude of the tuning fork vibration becomes large, charges generated on the monitor element become large, the output voltage amplitude of the A21 increases, and the smoothing output voltage rises; and the amplification factor of the A24 becomes small and the output voltage of the A25 which is applied to a driving element decrease Consequently, the amplitude of the tuning fork vibration is held constant

Abstract: PURPOSE:To make a piezo-electric resonator compact by forming a tuning fork part by carving plural slits respectively at each one end side of plural piezoelectric substrates, and arranging plural piezoelectric substrate so that tip end side of every tuning fork part is opposed to each other with a gap. CONSTITUTION:The tuning fork parts 3, 4 are formed by carving plural slits 2a to 2f at each one end side of plural flat and nearly right-angled rectangle- shaped piezoelectric substrates 2, 2'. Besides, plural piezoelectric substrates 2, 2' are arranged so that the tip end part of each tuning fork part 3, 4 is opposed to each other with the gap, and cover sheets 13 to enclose the tuning fork parts 3, 4 with the gap are provided on both sides of plural piezoelectric substrate 2, 2' as a center. Accordingly, the mutual propagation of piezoelectric vibration between the tuning fork parts 3, 4 is interrupted perfectly, and sure isolation can be realized. Thus, the compact piezo-electric resonator can be obtained without using parts like a spacer, etc.

Abstract: PURPOSE:To adjust or change the resonance frequency of a piezoelectric tuning fork vibrator simply by adhering a mass to both vibration parts formed as a tuning fork to both sides of a slit symmetrically in the center of the slit. CONSTITUTION:Sets of mass 6a, 6b are adhered symmetrically to vibration parts 4a, 4b around a slit 3. This is because the waveform is split and the frequency is changed to the both when the mass is adhered to one side only. The characteristic of the resonance frequency shown in solid lines shows an example when a thermosetting epoxy resin as the mass 6a, 6b is applied in the thickness of nearly 20mum. The resonance frequency f1 is decreased more than f0 by nearly 4kHz as shown in figure. The resonance frequency of a piezoelectric tuning fork vibrator 1 is simply adjusted without change of the slit depth of the slit 3 and the thickness of the piezoelectric substrate 2 or the like by the addition of the mass 6a, 6b.