"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."
Napoleon Bonaparte ; When told of the Robert Fulton steamboat
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| Number | Title | Issue Date |
| 7370600 | Air horn with light signal A horn device includes a trumpet fixture which removably attaches to the valve portion of a canister containing a charge of compressed air. An actuator button on the trumpet fixture is operable to open the valve assembly of the canister causing release of the pressu... | 05/13/2008 |
| 7339474 | Deflection sensing system The system incorporates wire deflection, taut wire detection for perimeter security applications. Generally, the system of the invention provides intrusion detection by an internal mechanism. The internal mechanism can detect wire deflection in any direction. In tur... | 03/04/2008 |
| 7270275 | Secured pin entry device The invention is a keypad for securely entering personal identification numbers onto automated teller machines (ATM) or similar devices. A frame secures a flexible keypad to a printed circuit board. The front of the circuit includes a set of tamper detection contact... | 09/18/2007 |
| 7121432 | Control unit for a light source in combination with a spray defense container A control unit in combination with a conventional self-defense spray container represents a combined light emitting and spray discharging self-defense device. The unit comprises a housing for a light source having a lower prismatic portion, a sleeve for securing the... | 10/17/2006 |
| 7081816 | Compact wireless sensor A compact size wireless sensor for sensing a change of state that includes a sensor switch, a microprocessor, a wireless transmitter, a timer (e.g., a low power clock circuit), an antenna, and a coin cell battery power source. The coin cell battery, which is positio... | 07/25/2006 |
| 7079031 | Sensor element for a monitoring device A sensor element may be provided for a monitoring device designed to protect displayed merchandise against theft. The sensor element may be flexible and include a sensor layer with a measuring circuit loop integrated therein. During attempted theft, a contact elemen... | 07/18/2006 |
| 7021091 | Cable security system A security system for confining movement of an object to a predetermined area. The security system has a cable, with a length, and a housing. The housing is guidable slidingly along the length of the cable and capable of being fixed at a plurality of different locat... | 04/04/2006 |
| 6778086 | Open window security lock An open window security lock consisting of a staff having a suction cup for attachment of the staff to the window which allows a sliding window sash to open a small amount for ventilation but not opening enough to admit an intruder. The staff upper end has a switch ... | 08/17/2004 |
| 6740834 | Vehicle door handle system A vehicle door handle system includes a pair of electrodes disposed within an operating handle located on the outer surface side of a door along the longitudinal direction of the vehicle. A detection circuit for detecting a change in capacitance between the two elec... | 05/25/2004 |
| 6710269 | Foil keyboard with security system The present invention discloses a foil keyboard with a security system for detecting and preventing unauthorized mechanical access to the key contacts. The foil keyboard comprising a foil having for each key an elastic key spring area in which an electrical contact ... | 03/23/2004 |
| 6578438 | Taut wire sensor A taut wire sensor includes an actuator that is movably coupled to a housing. The actuator includes a taut wire terminal. The actuator has two contacts that are maintained in a spaced apart orientation by the mating of parts, which are held in place by a ... | 06/17/2003 |
| 6417770 | Security spacer member for a window A security spacer member (10) is provided for a security window (100) having a magnet (106) retained within its frame (104) and a magnet (110) retained within its sash (112) such that the two magnets (106, 110) mate upon closing of the security window (10... | 07/09/2002 |
| 6301501 | Protective defibrillator storage device with alarm signal The protective defibrillator storage device has an enclosure comprised of a plurality of wall sections, a top section, a bottom section and a door section. The wall sections, top section, bottom section, and the door section define an interior compartment... | 10/09/2001 |
| 6249224 | Latch integrated, tamper resistant, electro-magnetic alarm switch An alarm switch assembly includes a housing having first and second surfaces and an opening defined therein that extends from one surface toward the other surface. The opening is further defined by at least four inner surfaces. A magnetic field generating... | 06/19/2001 |
| 6124792 | Latch integrated, tamper resistant, electro-magnetic alarm switch An alarm switch assembly includes a housing having first and second surfaces and an opening defined therein that extends from one surface toward the other surface. The opening is further defined by at least four inner surfaces. A magnetic field generating... | 09/26/2000 |
| 6121864 | Security switch and method for installation thereof An electrical switch includes a magnetically actuated switch (16), such as a reed switch, and a permanent magnet (10). A path defining arrangement (14) is mechanically coupled (by track follower 210) to the permanent magnet, for allowing the magnet to mov... | 09/19/2000 |
| 6037867 | Plug-in type supervisory switch A device for supervising movable articles or objects has a supervising member which can be attached thereto. The device includes a connector disposed in a housing. The housing includes an aperture and a rotary blocking member positionable between the conn... | 03/14/2000 |
| 5856644 | Drape sensor A freely hanging drape sensor distinguishing between weak and strong activation of the sensor includes a piezoresistive cellular material and standoff layer for providing an analog signal correlated with the strength of an activating force, as well as an ... | 01/05/1999 |
| 5610581 | Combination bar lock and electrical alarm system for doors and windows A window is positioned within a window casing and means are provided for rotatably connecting the window to the casing. A security apparatus includes a pair of rod holding brackets mounted on the casing on opposite sides of the window on an axis spaced fr... | 03/11/1997 |
| 5594418 | Self-contained dual panel window screen alarm An expandable intrusion detection screen for use with an audible electronic alarm has first and second screen panels slidably movable in parallel relation to each other to be expandable to fit within different sized window openings. The alarm is mechanica... | 01/14/1997 |
| 5592152 | Intruder detecting device to be installed in an integrated raised flooring system An intruder detecting device, which is to be installed in an integrated raised flooring system that includes a floor panel assembly and a plurality of pedestals for supporting the floor panel assembly on a base floor, has a housing, a restoring member, a ... | 01/07/1997 |
| 5568123 | Child protective cabinet alarm A device is mounted inside the interior space defined by a cabinet to alert a supervising adult that a child has opened the cabinet door. The device is mounted so that an outer face of its housing is directed outwardly adjacent to the opening closed by th... | 10/22/1996 |
| 5552768 | Portable window wedge with alarm A portable sliding window lock consists of a molded resilient triangular block having a suction cup securely fastened to its base. The suction cup is fastened to the base so that a jamming tapered tip on the triangular block is angled slightly toward the ... | 09/03/1996 |
| 5516994 | Alarm continuity switch To be utilized with a conventional structural alarm system having a plurality of alarm wires which carry a constant current flow, an alarm continuity switch which includes at least two identical contact assemblies, each of which have a contact housing. In... | 05/14/1996 |
| 5489890 | Portable alarm device for entryway motion monitoring A generally rectangular housing defines an interior cavity therein. A conventional battery powered alarm circuit is supported within the interior cavity. A supporting suction cup is securable to the housing to permit attachment of the housing to a conveni... | 02/06/1996 |
| 5469139 | Door block alarm A latch and alarm device for securing a door activates an alarm of 110-120 decibels for approximately 60 seconds if a force on the door exceeding about 20-30 pounds is detected. The device may be used with either left or right-hinged doors. A panic switch... | 11/21/1995 |
| 5389916 | Simplified shortcircuiting and circuit-breaking alarm means for planar or linear conductors A shortcircuiting and circuit-breaking alarm includes a Darlington amplifier comprised of two NPN transistors connected in series, a PNP transistor connected to the Darlington amplifier, a first planar or linear conductor connected between a base of a fir... | 02/14/1995 |
| 5341123 | Portable door alarm A portable door alarm having an alarm pushbutton switch extending from the back of the housing of the alarm has a first L-shaped member hingeably attached to a bottom portion of the housing. At the top of the first L-shaped member is a bracket hanger whic... | 08/23/1994 |
| 5311168 | Lock set with self-contained door alarm and annunciator system A self-contained alarm/annunciator system for a door provides an alarm function and a flashing LED when the door is locked to deter attempted burglary, and an annunciator function operable when the door is unlocked to indicate attempted door opening.... | 05/10/1994 |
| 5250927 | Inside mounting door stop and alarm A door-stop alarm has a frame adapted to be affixed to an inside surface of a door, and a rotatable lever carried on the frame rotatably movable between a position engaging a floor surface and a position away from engagement with the floor surface. Means ... | 10/05/1993 |
| 5243325 | Latch gate alarm switch assembly A switch assembly having a frame bracket with screw holes designed to permit easy and convenient attachment to the frame of a latch gate. The bracket is designed to support a switch arm, a portion of which engages the latch bar mounted on the door or gate... | 09/07/1993 |
| 5083110 | Window alarm system A window alarm system includes a plurality of small, self-contained units strategically located on the window. The units are either spring-controlled or transducer-controlled, and are set to activate an alarm upon the application of a predetermined amount... | 01/21/1992 |
| 5008648 | Electronic door wedge alarm A wedge-shaped device for use as an alarm for detecting the unauthorized opening of a hinged, inwardly-opening door may be easily installed at the base of the door to resist forced opening of the door while simultaneously sounding a highly audible alarm s... | 04/16/1991 |
| 4998096 | Multipurpose alarm device A hot water tank leakage detection system having a conventional smoke alarm unit 10, conductor pair 20, and probe 30. Conductor pair 20 is removably connectable to alarm unit 10 through male/female two conductor jack pair 15 and 25 respectively. In use pr... | 03/05/1991 |
| 4983947 | Combination illuminated entry/security alarm disarm switch system A combination illuminated entry and door lock switch for a vehicle door lock assembly which provides voltage signals to a single wire bus and smart sensor multiplex control system for controlling turning on interior lights of the vehicle when a door handl... | 01/08/1991 |
| 4977392 | Security alarm system and switch Generally there is provided a cabinet alarm device having a protruding switch lever arm arranged such that it is held open during closure of a cabinet door, but is allowed to close when the cabinet door is opened. The switch is pivotally mounted and urged... | 12/11/1990 |
| 4929926 | Intrusion detection barrier An intrusion detection barrier, comprises a coiled wire fence deployable over the ground or over another fence, a sensor wire tensioned between a pair of wire-supporting posts anchored in the ground, an intrusion detector connected to the sensor wire to s... | 05/29/1990 |
| 4912456 | Door latch alarm A housing is positionable within a door frame and includes an upper and lower compartment. The lower compartment includes a conventional dead-bolt latch with a secondary bolt operative by means of an associated handle. The secondary bolt includes an upwar... | 03/27/1990 |
| 4896139 | Self-contained burglar alarm device for sliding windows, doors and the like An elongated housing has first and second ends and an alarm responsive to an electrical signal. A switch is provided for controlling the electrical signal and includes contact elements for activating the alarm in each of two activation modes corresponding... | 01/23/1990 |
| 4890092 | Door stop alarm A wedge-shaped housing mounts a reciprocating elongate switch medially positioned and resiliently biased through an upper face of the wedge. Upon depression of the wedge by a door opening, a circuit is completed to actuate an included alarm. A variety of ... | 12/26/1989 |