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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 |
| 7066075 | Pneumatic transbrake actuator or solenoid for drag racing vehicles The present invention is a transbrake system for a transmission of a drag race car, the transmission comprising: (a) a transmission housing having an exterior, typically of aluminum; (b) a transmission valve body contained in the transmission housing; the transmissi... | 06/27/2006 |
| 6917565 | Clocking system The present invention provides a clocking system such that the magnetic sensor can detect the external magnetic field from the magnetic member that is rather far apart therefrom without increasing the sensitivity of the magnetic sensor excessively and without making... | 07/12/2005 |
| 6678214 | Vehicle systems reaction and acceleration timing device A timing device utilized for determining overall response of a vehicle to initial starting activities. The vehicle is comprised of an engine, a transbrake, a transbrake button and delay box for engaging and disengaging the transbrake, a drive shaft, a thr... | 01/13/2004 |
| 6384739 | Traffic monitoring system and method The system provides a method for gathering and sending monitored traffic data via a short messaging system message over a wireless network through a publicly switched telephone network ("PSTN") to a central computer. A remote traffic monitoring unit acts ... | 05/07/2002 |
| 5901114 | Circuit for measuring the cut-off time of an electronic system A circuit for measuring the duration of a cut-off period in the power supply to an electronic system, for example the control system of a motor vehicle starter, comprises a voltage splitting bridge and a processing unit receiving the output of the splitti... | 05/04/1999 |
| 5845268 | Parking management system There is disclosed a computer-based parking system for improving the apprehension of parking violators. Such parking system comprises one or more electronic-based parking meters or devices having a means for recognizing and storing electronically informat... | 12/01/1998 |
| 5696706 | Hand-held manually operable instruments determining and displaying lap speeds about a track and comparing different laps and racers A hand-held and operated, instantaneous readout, portable electronic instrument is disclosed, which may be used by an observer from the grandstands to determine the speed of racers such as racing cars, horses, athletes, etc. over a lap of a race-track and... | 12/09/1997 |
| 5644551 | Adaptable engine usage meter An adaptable engine usage meter includes engine monitoring circuitry arranged within a front housing. Three different rear housings can be interchangeably attached to the front housing. A first rear housing includes a concave back portion, so that in conj... | 07/01/1997 |
| 5285425 | Parking time display device equipped in a vehicle with a motor A parking time display device is provided in a car to display the time during which the car is parked. The parking time display device includes a sensor for detecting a stopping or parking condition of the car, a counter for counting time, a control circu... | 02/08/1994 |
| 5241487 | Racecar timing and track condition alert system and method In a preferred embodiment, one or more timing stations disposed around a racecar track. At each station, a timing signal in the form of a repeating or oscillating beam of laser light causes a photodetector mounted on a racecar to turn on and off, the phot... | 08/31/1993 |
| 5138589 | Distance self timer A device and a method for displaying to a person moving on a course the elapsed time between two points on the course. Generally, the person would be on or in a mode of transportation, such as a race car. A retroreflective switch is attached to the car an... | 08/11/1992 |
| 5091895 | Timing apparatus An electronic timing apparatus for determining precisely when vehicles pass over a particular line on a road, particularly a race track (20), has a series of separate loop antennas (26), arranged in closely adjacent relationship one to another across the ... | 02/25/1992 |
| 4879553 | Electronic parking time indicator for autovehicles A telecontrol system for a motor-vehicle (1) includes receiver (2) and transmitter (3). The receiver (2) is incorporated in the rearview mirror (4) of a motor-vehicle (1) and includes an electronic digital clock whose display (5) is provided on the back o... | 11/07/1989 |
| 4657403 | Aquatic event timing device An apparatus for timing of water-based activities or events, such as, sailboarding, yachting, motorboating and swimming. The apparatus comprises a rigid horizontal support bar, two vertical members attached to the ends of the support bar, buoyant floats a... | 04/14/1987 |
| 4630292 | Fuel tax rebate recorder A system for recording the total time that a motor vehicle is running, the time that the motor is running while the vehicle is stationary, and the time that the vehicle is running while the vehicle is moving. The system includes three electrically driven ... | 12/16/1986 |
| 4604621 | Device for the electromagnetic transmission of an event taking place in an interference-laden environment The electromagnetic transmission in an interference-laden environment of events defined by the time of their occurrence is accomplished by repeatedly generating, at equal intervals after occurrence of the event, signals representing the occurrence of the ... | 08/05/1986 |
| 4392749 | Instrument for determining coincidence and elapse time between independent sources of random sequential events An instrument that receives pulses from a primary external source and one or more secondary external sources and determines when there is coincidence between the primary and one of the secondary sources. The instrument generates a finite time window (coin... | 07/12/1983 |
| 4381555 | Apparatus for measuring the braking time of a motor vehicle Apparatus is described for recording certain operating conditions of a motor vehicle, those conditions occurring upon the braking of the vehicle, and the apparatus is particularly applicable to vehicles equipped with antilock braking systems. A shift regi... | 04/26/1983 |
| 4381042 | Excessive idle termination system A system for use in shutting down a motor vehicle engine upon elapse of selected sensed input conditions, comprises an electronic digital counter which begins counting in response to the occurrence of any of the selected input conditions. Logic gates and ... | 04/26/1983 |
| 4340945 | Operating apparatus for an appliance of a motor vehicle An operating apparatus for an appliance with electrical indication, particularly an electric clock of a motor vehicle, wherein push-button switches for setting or otherwise controlling the appliance are switched to one of their operative and inoperative p... | 07/20/1982 |
| 4317106 | Digital indicating installation for motor vehicles A digital indicating installation for vehicles which selectively reproduces several function values within an indicating field; by actuating one of several switches, the reproduction of a first function value is interrupted for a predetermined time and a ... | 02/23/1982 |
| 4293842 | Electronic display device for use in motor cars An electronic display device for use in a motor car wherein the contents of the display are determined by the respective positions of a manually operated switch and the ignition switch is disclosed. A control circuit detects the respective positions of th... | 10/06/1981 |
| 4290128 | Time sequence monitor Apparatus having a plurality of signal channels, a plurality of stopwatch circuits and a plurality of time lapse displays interconnected so that the relative time lapses in a series of related occurrences can be displayed.... | 09/15/1981 |
| 4245334 | Device for measuring and indicating the time between the reception of first and second airborne signals A system for measuring and indicating the time required for a movement from a first location to a second location that is spaced from the first location, including a first transmitter located at the first location and adapted to transmit either an RF or a... | 01/13/1981 |
| 4221976 | Transistor slope reversing circuit for digital clock display brightness control A circuit which utilizes a single transistor and a particular resistor combination to form a new slope reversing circuit in which the output voltage is a function of the input voltage with a change of sign for a monotonically varying input voltage. The ci... | 09/09/1980 |
| 4043117 | Self-cancelling parking meter Parking meter carries photosensor directed at the controlled parking space. The operator of a parked car energizes the meter by coin insertion and meter cranking and thus activates the photosensor. When the vehicle is moved out of the parking space, the p... | 08/23/1977 |
| 4022017 | Full electronic car clock with digital display and method of time setting therefor A fully electronic car clock with digital display is provided in which the counter circuit of the car clock is connected to a car battery through an engine key switch to be driven therefrom, and the clock display is interlocked with the engine key switch ... | 05/10/1977 |
| 3999372 | Parking meter control unit The invention provides an equalizer or control unit to be used in conjunction with the present day type of parking meter. The control unit of the invention comprises an ultrasonic transmitter and receiver system which senses the presence of a parked vehic... | 12/28/1976 |
| 3965669 | Engine running time indicator A cumulative running time indicator for use with an engine has a ceramic resonator-controlled oscillator that drives an electronic divider, a multiplexer, and a stepping motor which is connected through a gear train to a mechanical display showing elapsed... | 06/29/1976 |
| 3948039 | Hour meter operated responsive to tachometer signal An hour meter on a tractor for registering the operating time of the tractor connected for receiving a tachometer signal to energize the hour meter circuit and thereby register the time of engine operation of the vehicle responsive to actual operating tim... | 04/06/1976 |
| 3930363 | Parking meter A parking meter which electrically indicates "remaining time" and which electrically operates only in the presence of a vehicle and when there is "paid-for" time on the meter. Thus, for example, unused time by one departing motorist is cancelled.... | 01/06/1976 |
