A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 8022777 | Ovenized crystal oscillator assembly An oscillator assembly including an oscillator seated on a pad of thermally conductive material formed on the surface of a printed circuit board and covered by a lid defining an oven for the oscillator. In one embodiment, a plurality of heaters are located on differ... | 09/20/2011 |
| 7965146 | Constant-temperature type crystal oscillator A constant-temperature type crystal oscillator includes: a crystal unit; an oscillator output circuit; a temperature control circuit; and a circuit substrate, on which circuit elements are installed. A principal surface of the crystal unit is installed so as to face... | 06/21/2011 |
| 7737796 | Constant temperature type crystal oscillator A lead wire led-out type crystal oscillator of constant temperature type for high stability is disclosed, which includes a heat supply body that supplies heat to a crystal resonator from which a plurality of lead wires are led out, to maintain the temperature consta... | 06/15/2010 |
| 7345552 | Constant temperature type crystal oscillator A lead wire led-out type crystal oscillator of constant temperature type for high stability is disclosed, which includes a heat supply body that supplies heat to a crystal resonator from which a plurality of lead wires are led out, to maintain the temperature consta... | 03/18/2008 |
| 7246022 | Initiation of differential link retraining upon temperature excursion A method includes detecting a change in temperature in an integrated circuit that is coupled to a differential communication link, and responding to the detected change in temperature by initiating a retraining process for the differential communication link. ... | 07/17/2007 |
| 7209013 | Systems and methods for self-calibration A self-calibrating integrated circuit includes a processor having at least one analog function used with the processor; one or more sensors adapted to sense one or more environmental parameters of the at least one analog function; and a solid state memory being conf... | 04/24/2007 |
| 7199592 | Method and apparatus for applying microwaves to measure the moisture content of material Apparatus for ascertaining the mass and/or the moisture content of successive increments of a running rod containing tobacco and/or filter material for tobacco smoke has a resonator housing with a cylindrical internal chamber which is disposed between an inlet and a... | 04/03/2007 |
| 7116182 | Method and system for downhole clock having compensation A downhole crystal-based clock that is substantially insensitive to the factors that cause frequency deviation. The clock may be maintained at a predetermined temperature using a temperature sensing device and a heating device, where the predetermined temperature co... | 10/03/2006 |
| 7088032 | Crystal oscillator A crystal oscillator of the present invention includes: a substrate provided in a package; a heating device arranged as surrounding an internal area of the substrate on at least one of the surfaces of the substrate; a crystal resonator or a crystal element and an os... | 08/08/2006 |
| 7071598 | Thin and highly stable piezoelectric oscillator, and thin and surface-mounting type highly stable piezoelectric oscillator A thin and highly stable piezoelectric oscillator is provided with a piezoelectric vibrator, a mother printed board which supports a piezoelectric vibrator main body on its one face and connects lead terminals to a wiring pattern, oscillating circuit parts which are... | 07/04/2006 |
| 7023286 | Systems and methods for self-calibration A self-calibrating integrated circuit includes a processor having at least one analog function used with the processor; one or more sensors adapted to sense one or more environmental parameters of the at least one analog function; and a solid state memory being conf... | 04/04/2006 |
| 7023291 | Oven controlled crystal oscillator for high stability To provide a highly stable crystal oscillator having increased thermal efficiency. The highly stable crystal oscillator comprises; a thermostat mainframe which maintains the temperature of a crystal resonator including a resonator container for sealing a crystal pie... | 04/04/2006 |
| 7003273 | Temperature compensating circuit, electronic apparatus and radio unit having temperature compensating function A temperature compensating circuit is provided in a radio unit, an ambient temperature is detected by a temperature sensor of the temperature compensating circuit, the detected temperature value is supplied to a correction address storage section as an address after... | 02/21/2006 |
| 6870430 | PLL-controlled oscillator A PLL (Phase-Locked Loop)-controlled oscillator has a temperature-compensated crystal oscillator having a quartz crystal unit, an oscillating circuit connected to the crystal unit, and a temperature compensating mechanism for generating a temperature compensating vo... | 03/22/2005 |
| 6642803 | Temperature compensated crystal oscillator A temperature compensated crystal oscillator has first and second layered structures, an IC chip, a crystal vibrating chip, a resin mold portion and a metal cover. Each of the first and second layered structures has a cavity formed therein. The cavity for... | 11/04/2003 |
| 6606009 | Self-compensating ovenized clock adapted for wellbore applications A clock system is disclosed which includes a dual mode oscillator crystal having a first output having a frequency related to a temperature of the oscillator crystal and a second output having a frequency substantially stable with respect to temperature. ... | 08/12/2003 |
| 6147565 | Piezo-oscillator with heater and temperature control circuit There are disposed on a printed substrate a crystal resonator as a piezoelectric resonator, an oscillation circuit, a plurality of surface mount heaters and a temperature controlling circuit for controlling a heating temperature of the heaters. A case of ... | 11/14/2000 |
| 5703542 | Compact temperature stabilized crystal oscillator A compact temperature controlled crystal oscillator employs a high conductivity heat spreader bonded to one side of a printed circuit board into the crystal. Heaters are arranged at edges of the circuit board and a temperature sensor for the temperature r... | 12/30/1997 |
| 5659270 | Apparatus and method for a temperature-controlled frequency source using a programmable IC A substantially sealed frequency source (10) including a crystal oscillator (14) and a programmable IC (22) thermally and electrically coupled on a substrate (12). The IC (22) is accessed through an interface (26) with programming signals (42) so as to pr... | 08/19/1997 |
| 5530408 | Method of making an oven controlled crystal oscillator the frequency of which remains ultrastable under temperature variations The present invention provides for methods of increasing the frequency vs. temperature ("f vs. T") stability of Oven Controlled Crystal Oscillators to levels which are superior to atomic frequency standards and 100 to 10,000 times higher than that current... | 06/25/1996 |
| 5467059 | Temperature-stabilized oscillator circuit having heating elements that can be externally influenced In an oscillator circuit (VCOS) having at least one heating element (HE) that keeps the temperature constant, the clock signals (ts) that are formed are conducted via an output connection (AV) to an output (TA) of the oscillator circuit (VCOS). An impedan... | 11/14/1995 |
| 5063358 | Ultra low noise crystal oscillator circuit An ultra low noise oscillator circuit including a crystal and having two outputs. At the two outputs, the signal is correlated and the noise outside of the crystal bandwidth is decorrelated. Summing the two outputs in a hybrid circuit significantly reduce... | 11/05/1991 |
| 5004987 | Temperature compensated crystal resonator found in a dual-mode oscillator A device utilizing a quartz crystal resonator with an orientation substantially equal to 21.93°/34.10°. The crystal resonator is capable of vibrating simultaneously in two thickness modes, namely the B-mode and the C-mode. Because of the nature of the d... | 04/02/1991 |
| 4985687 | Low power temperature-controlled frequency-stabilized oscillator A quartz crystal resonator is situated in an enclosure whose interior is substantially a vacuum. A heating element is attached to the crystal surface. A sensor is attached to the crystal enclosure, and may be sandwiched between the crystal enclosure and t... | 01/15/1991 |
| 4862110 | Oscillator, in particular a surface acoustic wave oscillator, frequency controlled by controlling its temperature An oscillator is provided, in particular a surface acoustic wave oscillator, frequency controlled by controlling its temperature, which oscillator comprises a SAW resonator frequency controlled by an integral loop including a heating means coupled thermal... | 08/29/1989 |
| 4849718 | Circuitry and method for controlling IMPATT diode A method of maintaining the operational characteristics of an IMPATT diode is shown to consist of the steps of sensing the peak diode voltage and using such voltage to control the current through the IMPATT diode so that the peak diode voltage is kept con... | 07/18/1989 |
| 4797614 | Apparatus and method for measuring conductance including a temperature controlled resonant tank circuit with shielding A meter for sheet conductance measurements does not touch the conductive surface of a sample. A probe having a resonant tank coil is positioned against a parallel supporting surface of the sample, which may be flat or curved and of unrestricted area. An o... | 01/10/1989 |
| 4586006 | Crystal oscillator assembly An assembly for a quartz crystal oscillator housed within a can is set forth in which the oven assembly for the crystal is partially formed with metallized circuit boards to which the components for the electrical circuits for controlling the crystal osci... | 04/29/1986 |
| 4575689 | High frequency oscillator with a compensated isochronism deficiency The high frequency oscillator includes a piezo-electric crystal (1) which is connected to at least two exciter electrodes (3, 4) and means which make it possible to apply on the one hand to the electrodes (3, 4) electric excitation power for the crystal a... | 03/11/1986 |
| 4574255 | MMC Substrate including capacitors having perovskite structure dielectric and electrical devices including MMC substrate Between insulative layers (31-37, 41-44), a multilayer substrate comprises at least one dielectric layer (26-29). It is possible to form capacitors (58), resistors (46), and wiring conductors (61, 62) in the substrate. The at least one dielectric layer sh... | 03/04/1986 |
| 4568891 | R.F. Oscillator arrangement In an R.F. oscillator arrangement comprising a diode (D), such as a TRAPATT diode, operable to produce pulses of R.F. energy when d.c. pulses (P) above a critical level (Ik) are applied to the diode (D), the frequency of oscillation is markedly... | 02/04/1986 |
| 4537515 | Resonator temperature compensated time base and watch using said time base To compensate for frequency variation in the quartz oscillator 4, 6 due to temperature variation, a second quartz oscillator 12, 14 forming a thermal sensor is employed. The beat frequency fB (circuit 16) which is counted in the counter 26 for a period of... | 08/27/1985 |
| 4513364 | Thermally controllable variable frequency inverter A self-oscillating inverter circuit wherein the inversion frequency can be controlled by way of providing a controllable flow of electrical power to a resistor heating means that is thermally coupled to a saturable magnetic ferrite transformer used in the... | 04/23/1985 |
| 4479096 | Voltage variable crystal controlled oscillator A highly stable voltage variable crystal controlled oscillator adapted for stand-alone use or for use with an atomic clock for further stabilizing the oscillator. A novel Colpitts crystal oscillator configuration is employed and utilizes an FET amplifier ... | 10/23/1984 |
| 4328572 | Voltage control system for electronic timepiece In an electronic timepiece powered by a lithium battery, a voltage control system is provided whereby a supply voltage of approximately one half of the battery voltage is supplied to certain portions of the timepiece circuit under normal operating conditi... | 05/04/1982 |
| 4272731 | Thin film resistor microwave noise generator The invention is a novel noise reference generator for use in amplitude comparison radiometric systems for the purpose of rapid precision control of the over-all gain of the radiometer receiver. The reference generator operates by cyclic modulation of the... | 06/09/1981 |
| 4017780 | Dynamic temperature compensating circuit for power transistor converters A dynamic temperature compensating circuit is disclosed for driving the bs of a first and a second transistor connected in the common-emitter configuration, having collector-emitter paths of the two transistors connected together in a current loop. The c... | 04/12/1977 |