Quotables
"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 4167733 | Tamper-proof security alarm system A tamper-proof security alarm system comprising basically a radio transmitter unit to be located at equipment which is to be protected, and a radio receiver unit with alarm and control circuits located at a point remote from the transmitter. The transmitt... | 09/11/1979 |
| 4163300 | Electric toothbrush An electric toothbrush consisting of an elongated body member having a cylindrical brush mounted coaxially therewith at one end thereof, and driven rotatably by a reversible electric motor carried in the handle, and having an automatic reversing switch re... | 08/07/1979 |
| 4158173 | Mercury switch activated radio A transistor radio includes a mercury switch mounted in a fixed position within an outer housing and connected to the power circuitry of the radio. The housing has a plurality of flat surfaces to permit it to be maintained in a number of different stable ... | 06/12/1979 |
| 4155067 | Automobile alarm device An alarm device for detecting movement of parked automobiles provides a support for mounting on an automobile. An outer member defines a ring having an inner surface of conducting material. A helical spring is attached to the support to suspend the ring i... | 05/15/1979 |
| 4150267 | Master electric switch A special switch installed within an automotive vehicle between the battery and the vehicle electric system, so that when the special switch is turned off, the vehicle battery is completely disconnected, thus eliminating all danger of a fire starting in c... | 04/17/1979 |
| 4144422 | Tilt actuated circuit breaker A tilt actuated circuit breaker that discontinues the flow of electrical energy from a battery through the ignition system of a motor vehicle when the vehicle is involved in an accident. Longitudinal and transverse undulated tubes, each containing a heavy... | 03/13/1979 |
| 4135067 | Tilt switch and holder An omnidirectional tilt switch includes an enclosure for a gravity response conductive ball. An annular shelf surrounds a central depression where at least one switch contact passing into the housing is exposed. The shelf is operable to support the ball i... | 01/16/1979 |
| 4124841 | Motion detection device A device for giving a visual or audible indication of motion such as impact, vibration or the like, which has a contact element supported on a base. When motion occurs, due to earthquake or other causes, a contact element is displaced completing an electr... | 11/07/1978 |
| 4115995 | Automatic wristwatch construction A wristwatch having a housing with an electronic digital visual display. A motion activated switch means is provided in the housing to reset the visual display to a desired display. The switch means has a first and a second switch function to cause a disp... | 09/26/1978 |
| 4104492 | Gravity actuated light socket and switch means A combined gravity operated light socket and switch including a base, fastening means extending from one side thereof and a dielectric housing extending from the other side, the housing being divided into two adjacent chambers. The first chamber is open-e... | 08/01/1978 |
| 4103842 | Locking sensor for belt retractor An emergency locking retractor system for storing a length of safety belt incorporates a sensor which includes a multi-directional pendulum device displaceable from its rest position by acceleration. Displacement of the pendulum is utilized to change the ... | 08/01/1978 |
| 4085304 | Vibration switch having threaded terminals and plural roller contacts Two side-by-side elongate terminals support, from below, one or a pair of electrically-conducting bodies which contact the terminals and thus provide electrical continuity between the terminals so that vibration will cause the body or bodies to lift from ... | 04/18/1978 |
| 4072835 | Fluid type inertia switch having resettable plunger and cone shaped retainer A resettable switch is disclosed having a conductor maintained in contact with a reservoir of mercury to conduct current therethrough during normal operation. During impact or roll over, the mercury is spilled from the reservoir and prevented from returni... | 02/07/1978 |
| 4071723 | Plunger-release shock responsive control apparatus having adjustable seat for sensor mass A shock-responsive control apparatus has a seismic ball mounted in a seat formed in a cup-shaped member and surrounding the plunger of a switch. As the ball crosses a circular region, at which the inclination of the seat to the central axis of the apparatus in... | 01/31/1978 |
| 4050644 | Inertia responsive control device An inertia responsive control device in which a ball is provided which is supported by a recess therebeneath which is smaller in the lateral direction than the ball. A control element is pivotally supported at a point spaced from the ball and extends over... | 09/27/1977 |
| 4043076 | Electrical signal mechanism actuated in response to rotation about any of three axes An object (baton, ball, wheel, or the like) which generates a signal (visual, audio, or the like) only when in rotation and when in rotation generates a continuous signal. A power source, a first switch which assumes its ON position in response to centrif... | 08/23/1977 |
| 4043033 | Machine for inserting electrical contacts into electrical interconnection boards A machine for inserting socket contacts into holes in electrical panel boards or printed circuit boards. A vibratory feeder is coupled through an escapement by means of a flexible tube to a hand held insertion tool. A timing mechanism operates the escapem... | 08/23/1977 |
| 4042796 | Inertia switch for sensing vibration forces A delicately balanced but normally closed polished ball bearing sensor highly responsive to physical vibrations of its immediate environment having security significance. A ball bearing is confined within a cylindrical metal shell with a very slight clear... | 08/16/1977 |
| 4039789 | Theft protection sensor switch A movement-sensitive switch for detecting small movements comprising electrically conductive top and bottom hollow members joined together along the peripheries thereof with insulation disposed thereinbetween forming a hollow chamber. Disposed within the ... | 08/02/1977 |
| 4034171 | Means for energizing a color television picture tube during manufacture This disclosure depicts a means for energizing a color television cathode ray tube during manufacture. In particular, this means for energizing a color television picture tube is for use with a tube having an envelope containing an electron gun assembly a... | 07/05/1977 |
| 4023346 | Wrist watch with time display control switch A wristwatch of the digital type in which there is switch means including a movable member visible from the front of the watch and in which the movable member has to be manipulated deliberately into a predetermined position in order for the switch means t... | 05/17/1977 |
| 4022998 | Acceleration and retardation responsive electric control device A device responsive to acceleration in any direction in which a ball rests on an upwardly facing seat in a housing and is movable laterally on the seat when acted on by a predetermined force of acceleration. When the ball moves laterally on the seat an el... | 05/10/1977 |
| 4016535 | Tilt alarm for tractor vehicle or the like In a tractor like vehicle a new tilt alarm device which operates to warn the vehicle operator when the vehicle becomes tilted beyond a predetermined desired angle of warning.... | 04/05/1977 |
| 4006452 | Electrical alarm device for motorcycles For use as an anti-theft alarm for a motorcycle, an electrical alarm device has a casing for securing to the frame of the motorcycle. The casing contains a rechargeable battery, an electric horn, a mercury tilt-switch, and a key-operable switch accessible... | 02/01/1977 |
| 4001185 | Acceleration sensing device An acceleration sensing device comprising an electrically conductive annular conductive support ring, an electrically conductive sphere to be placed on the upper inner periphery of said support ring, and an electrically conductive contact disposed in the ... | 01/04/1977 |
| 3999178 | Orientation responsive alarm system Disclosed is a boat alarm system including a sensor that provides a sensor output in response to a predetermined change in its orientation, a timer for providing an alarm signal in response to a one-quarter to one second period of uninterrupted sensor out... | 12/21/1976 |
| 3975722 | Protective alarm system A vibration sensitive electrical alarm system comprising an electrically conductive pendulum means swingably suspended from an axle member, a pendent body pivotally attached to said axle and having an electrically conductive projection secured to it exten... | 08/17/1976 |
| 3971006 | Multi directional motion and vibration triggering device A motion detector and unique switch forming a part thereof in which the switch includes a glass housing with a spherically shaped, concave surface in which a pool of mercury rests and a pair of separated annular contacts extending in parallel planes above... | 07/20/1976 |
| 3963888 | Multi-angle tilt switch device with adjustable oscillating controller The tilt switch device includes a cylindrical casing having a platform therein located near its upper end. A circular disc has a downwardly projecting flange or skirt which rests on the platform. A rod is threadedly attached to the center of the disc, the... | 06/15/1976 |
| 3963885 | Gravity actuated miniature switch for watch having switch actuator magnetic retaining structure A switch device for use in a wristwatch. The device comprises a switch housing and a cavity defined within the switch housing. The cavity has a side wall with at least a portion thereof being arcuately extending, a top wall and a bottom wall. A spherical ... | 06/15/1976 |
| 3955356 | Watch having positioned controlled display actuator Disclosed is a solid state watch having an electro optical display which is selectively actuated by a gravity switch contained in the watch casing and positioned such that upon a displacement from a horizontal of the watch the display is actuated. A prefe... | 05/11/1976 |
| 3946173 | Acceleration/deceleration actuating mechanism for wrist instruments Terminals within a digital wristwatch which normally require closure by pressing a button on the side of the watch in order to render visible the display are arranged to be automatically closed by a magnetic inertial device within the watch casing. The ma... | 03/23/1976 |
| 3943499 | Portable fire detector A portable fire alarm device comprising fire detecting means and alarm means powered from a self-contained power supply. The power to the detector and alarm is through a normally closed switch of the type such as a mercury switch which may be opened by ti... | 03/09/1976 |
| 3935701 | Wristwatch with a time display control switch means An electronic watch having an illuminating time display is provided with a switch for controlling the illumination which is operable controlled movement of the arm on which the watch is carried. A closed casing in the watch is provided with electrical con... | 02/03/1976 |
