|
Match
|
Document |
Document Title |
|
|
7515068 |
Vehicle axle sensor
A roadway vehicle sensor includes a coextrusion having a linear conductive section and a linear non-conductive section forming a vehicle deformable closed housing. The linear conductive section has...
|
|
|
7417561 |
Acoustic or pneumatic pulse transfer system for event counting
An event sensing component includes a housing, wherein the housing includes a first tube that is provided along an entire length of the housing, and a second tube that is provided along the entire...
|
|
|
7022925 |
Acoustic pulse transfer system for event counting
An acoustic pulse transfer device according to the invention has one or more carrier segments that can be connected together to transport acoustic pulses through them. Acoustic pulses generated by...
|
|
|
6917308 |
Surface-mount traffic sensors
Surface-mounted traffic monitoring sensors that do not require substantial disruption to traffic flow to install or maintain, and that do not substantially degrade the physical integrity of the...
|
|
|
6858811 |
Binary switch apparatus and method for manufacturing same
The present invention relates generally to methods and apparatus for the manufacture of binary switches for use in the medical monitoring field and membrane switches for use in a variety of...
|
|
|
6744378 |
Roadway sensor with improved insulated signal carrying wires
A vehicular roadway sensor comprising a conductive elastomeric housing having a sensor wire groove and one or more signal wire in the sensor wire groove, the sensor wire groove comprised of an...
|
|
|
6492604 |
Device for detecting pressure and passage of a vehicle wheel on a pavement using a conductive rubber and method for installing same
A system for detecting the pressure and passage of a vehicle wheel on a surface includes an element made of a deformable conductive rubber component which is urged into contact with an opposing...
|
|
|
6469266 |
Road vehicle axle sensor
An improved vehicle road sensor is provided for signalling the passage of a vehicle over a predetermined location on a roadway. The vehicle road sensor includes a membrane switch which includes a...
|
|
|
6396010 |
Safety edge switch for a movable door
A safety edge switch for a motorized door includes a longitudinally extending base, a resiliently deformable material, an electrode array of a plurality of spaced apart conductive segments, and an...
|
|
|
6326902 |
Residual charge-effect traffic sensor
A vehicular roadway sensor comprising a conductive elastomeric housing having a sensor wire groove and one or more signal wire in the sensor wire groove, the sensor wire groove comprised of an...
|
|
|
6288651 |
Portable roadway perimeter alarm
The portable roadway perimeter alarm has an impact sensor which may be a shock or pressure sensor that is connected to a transmitter. The impact sensor and transmitter unit is located around the...
|
|
|
6130627 |
Residual charge effect sensor
A residual charge traffic sensor for monitoring the number and speed of vehicles traveling in multiple lanes of a roadway includes a housing containing a cavity, a conductive mounting bar adapted...
|
|
|
5883585 |
On-road object detecting system
A system for detecting an object located on a travelling path even in bad weather or during nighttime in which conducting wires having a predetermined impedance value are laid along a travelling...
|
|
|
5850192 |
Apparatus for sensing vehicles
An underground vehicle sensing system extends below a vehicle travel surface to detect the presence of a vehicle. A conduit extends substantially horizontally underground from an access hole placed...
|
|
|
5710558 |
Traffic sensor for roadway placement
A traffic sensor for dispostion across a lane or lanes of a roadway includes a pliable strip within which is housed a flexible carrier which in turn supports electrical sensors and coaxial cables....
|
|
|
5668540 |
Detection device for data relating to the passage of vehicles on a road
A detection device for data relating to the passage of vehicles over a road. The detection device is to be placed in a groove provided in the upper portion of the road and comprises a first...
|
|
|
5661474 |
Highway work zone intrusion alarm system
A work zone intrusion alarm system which sounds a siren to warn highway workers in the event a vehicle enters a work zone. Workers may thus react to errant vehicles in time to avoid injury. The...
|
|
|
5602428 |
Switch mat with active threshold
A pressure sensitive switch mat capable of interconnection with other such switch mats on all sides to eliminate non-activation zones as disclosed. The switch mat has a main switch mat portion and...
|
|
|
5477217 |
Bidirectional road traffic sensor
A bidirectional road traffic sensor include several respective lengths of coaxial piezoelectric cable each having a conductive core, a conductive polymer surrounding the core, a conductive sheath...
|
|
|
5450077 |
Roadway sensor systems
A linear roadway vehicle sensor for sensing vehicular traffic thereover includes a flexible carrier member comprising an elongated flat elastomeric member having upper and lower surfaces, a recess...
|
|
|
5448232 |
Roadway sensors and method of installing same
A linear roadway sensor in which a distributed weight member has a weight per unit length which is sufficient to maintain the sensor on the roadway and substantially immune to air effects generated...
|
|
|
5373128 |
Wheel sensing treadle matrix switch assembly for roadways
A wheel sensing treadle of high sensitivity includes a thin membrane strip having a top non-conductive membrane and a bottom non-conductive membrane, the membranes being generally parallel, spaced...
|
|
|
5360953 |
Lane discriminating traffic counting device
A traffic counting cord has a plurality of sections designed to be identical in physical characteristics, set-up procedures, durability and performance as a road tube. Each section has a portion...
|
|
|
5115109 |
Speed detector for traffic control
A system used for monitoring the flow and speed of traffic has a strip member (1) comprising electrical contacts (3, 7) on distinct layers (2, 6) separated by a dielectric spacer layer (4), such...
|
|
|
5096329 |
Drunk driver detection system
Disclosed is an improved system for quick detection of driver impairment as evidenced by the driver's inability to keep a vehicle on an assigned course, utilizes parallel strips defining a...
|
|
|
4839480 |
Vehicle sensing device
A vehicle sensing device comprises an electrically insulating elongate carrier (1) with two electrical conductors (2,3) extending longitudinally of the carrier and spaced apart transversely of the...
|
|
|
4787243 |
Device for detecting a dimension, in particular a tread width on a path
The device comprises: an elongate support part (4) suitable for being embedded in the path and having a low upstanding wall (17) running along the edge thereof; a plate (30) cantilevered out from...
|
|
|
4483076 |
Ground contact area measurement device
Measurement of the area and shape of contact between a vehicle's wheels or racks and the surface over which it moves is automated by having the vehicle drive over an array of switches connected in...
|
|
|
4250434 |
Pressure-responsive electric switch
A pressure-responsive electric switch assembly provided with an elongated pneumatic tube of elastomeric foam material impermeable to air, one end of the tube being plugged and the other having a...
|
|
|
4192394 |
Alarm system for platform scale
To prevent inaccurate weighing on a platform scale in the event that a driver of a motor vehicle has purposefully or inadvertently positioned his vehicle with one or more of the vehicle wheels...
|
|
|
4178948 |
Apparatus for use in cleaning vehicle tires
A treadleplate for use in an automatic carwash system for regulating the length of time a cleaning solution is sprayed on the tires of a passing vehicle in direct relationship to the size of the...
|
|
|
4091370 |
Fluid control for electrical circuit
A pneumatically-operated bell, such as is commonly used in service stations, has twin pneumatic hoses. The first is a conventional signal hose, actuating the bell when compressed. The second hose...
|
|
|
3968339 |
Apertured diaphragm end valve
A valve which produces an electrical signal upon pressure changes in which a diaphragm having an aperture contacts a leaf spring having a projection thereon. The valve provides for both controlled...
|
|
|
3835449 |
METHOD AND APPARATUS FOR CLASSIFYING THE TIRE WIDTH OF MOVING VEHICLES
The method of arranging a row of tire sensing devices across about half a traffic lane, arranging the devices into groups whose length is no greater than the difference in width between the...
|
|
|
3825277 |
MAT SWITCH
A flexible casing of electrical insulating material, having spaced top and bottom walls and a peripheral wall enclosing a pair of spaced apart electrical conductor plates. An elongated spacer strip...
|
|
|
3751615 |
PRESSURE-OPERATED TAPE SWITCH
A pressure-operated tape or ribbon switch suitable for use for detecting the presence of an occupant of a seat in a motor vehicle when this switch is secured to the underside of the seat. The...
|
|
|
3721784 |
IMPACT RELIEF PRESSURE SWITCH FOR ROADWAY VEHICLE DETECTOR
A pressure switch is disclosed for use in a roadway vehicle detector system. The pressure switch includes a cylindrical metal case which has a diaphragm of resilient material secured on the open...
|
|
|
3715541 |
CUSHION SEAT SWITCH SENSOR MEANS
A ribbon switch is provided for operating on cushioned seats, for instance, between the spring and padding of automobile seats. First and second flexible conductive strips are normally separated by...
|
|
|
3204056 |
Air pulse switch having inherent holding period
|
|
|
3122731 |
Hospital signal device
|
|
|
3116382 |
Pneumatic control systems incorporating pneumatically actuated switches
|
|
|
3090401 |
Street hose for pneumatically actuated parking meter
|
|
|
2966877 |
Highway signal device
|
|
|
2903854 |
Door controlling system
|
|
|
2795668 |
Actuating means for electric light bulbs
|
|
|
2793264 |
Elevator signal control
|
|
|
2783325 |
Extended length hydraulic switch
|
|
|
3553967 |
Title is not available
|