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The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 7453225 | Impulse wrench with angle sensing means In an impulse wrench there is provided an impulse unit with a motor driven inertia drive member, and a movement detecting device arranged to detect an angular movement of the inertia drive member. The movement detecting device includes a rotating disc rigidly connec... | 11/18/2008 |
| 7420347 | System and method for using a capacitive door edge sensor A system and method for sensing capacitance at the edge of a movable barrier and for detecting an obstruction includes positioning a conductive member within or about a holder. A sensed capacitance between the conductive member and ground. A controller is coupled to... | 09/02/2008 |
| 7204567 | Method and device for detecting residual pressure in a braking system in particular in a braking cylinder According to the invention, the existence of residual pressure in the braking system is determined by means of continuous rough monitoring of the pressure in said system. If the existence of said residual pressure is established, then a fine monitoring process is ca... | 04/17/2007 |
| 7091692 | Electromotive adjustment drive The invention relates to an electromotive adjustment drive which is operated by a safety voltage, for instance, an adjustment drive for the adjustable components of pieces of furniture. The adjustment drive is equipped with a hand-operated device and a control unit ... | 08/15/2006 |
| 6917174 | Cost-effective measurement of large machine currents The increasing use of electrically powered vehicles has created a need for inexpensively and effectively measuring high currents for motor control, as for example digital motor control. Because the high operating voltages of traction motors, the motor current sensor... | 07/12/2005 |
| 6812655 | Induction actuated container An induction actuated container includes a container body, a container cover, a drive and an induction element. The drive includes a driven operating member and a driving member. The induction elements includes a sensor and an actuating controller for the driving me... | 11/02/2004 |
| 6771038 | Instrument reference system A method and system for calibrating a motor-driven instrument pointer (8) against a stop (5) without using feedback includes, in a first power state, driving the pointer (8) at full torque against the stop (5), then driving the pointer ( | 08/03/2004 |
| 6528961 | Movable barrier operator having force and position learning capability A movable barrier operator includes a wall control switch module having a learn switch thereon. The switch module is connectable to a control unit positioned in a head of a garage movable barrier operator. The head unit also contains an electric motor whi... | 03/04/2003 |
| 6515441 | Glass edge object detection sensor An object detection system includes a sensor in communication with a controller which identifies contact with the sensor. In a preferred embodiment the sensor is a piezo film which generates a signal when an object applies a predetermined force to the edg... | 02/04/2003 |
| 6400112 | Bi-directional pass-point system for controlling the operation of movable barriers An operator for opening and closing movable barriers such as garage doors comprising a pass-point limit system which is a component of an operating head. An operator for a rolling shutter or gate can be installed on either side of the opening. A dual pass... | 06/04/2002 |
| 6388410 | Apparatus and method for monitoring a closed-off interior space of a motor vehicle An apparatus invention relates to an apparatus and method for monitoring an interior space which is closed off by a locked and/or manually non-unlockable door, flap, sliding sunroof or the like, for example a passenger compartment or luggage compartment o... | 05/14/2002 |
| 6362584 | Virtual sensor for window position The present invention discloses a novel method and apparatus for determining the position of a window glass in an aperture window as between one of two or more regions. Further, the present invention discloses a method and apparatus for determining the di... | 03/26/2002 |
| 6337549 | Capacitive anti finger trap proximity sensor The present invention relates to a trapping protector capable of detecting the presence of an object in a sensing region when connected with a device for creating input signals and evaluating output signals. Said trapping protector comprises a body portio... | 01/08/2002 |
| 6329923 | Process and device for operating a rain sensor An apparatus and a method for operating a rain sensor (10) that outputs a sensor signal (18, 22) as a function of the wetting of a window (11) are proposed, having a controller (16) which as a function of the sensor signal (18, 22) outputs a control signa... | 12/11/2001 |
| 6198242 | Powered sliding device for vehicle slide door The present powered sliding device comprises a wire drum, a motor for rotating the drum, and a clutch means provided between the drum and the motor. The clutch means has a coupled state for rotating the drum, an uncoupled state, and a brake state. The clu... | 03/06/2001 |
| 6175202 | Circuit for controlling an electrically operated motor vehicle door lock or similar The invention relates to a circuit for controlling an electrically activated motor vehicle door lock or the like, with a lock latch (1) and a detent pawl (2) which keeps the lock latch (1) in the closed position and with an electric motorized auxiliary cl... | 01/16/2001 |
| 6157153 | Motor driver A motor driver has a braking control circuit. The braking control circuit shuts off the supply of an electric current to the coils included in the motor when a motor control signal shifts to a predetermined level and, after a predetermined length of time ... | 12/05/2000 |
| 6133703 | Bi-directional pass-point system for controlling the operation of movable barriers An operator for opening and closing movable barriers such as garage doors comprising a pass-point limit system which is a component of an operating head. An operator for a rolling shutter or gate can be installed on either side of the opening. A dual pass... | 10/17/2000 |
| 5982131 | Control device for motor driving system A stator 3 of a motor 1 is pivotally supported on a stationary system 5 by an elastic member 28, 11a, 42 provided along the circumferential direction of the stator 3, and a detector 11 for detecting a rotational force of the stator 3 is provided to execut... | 11/09/1999 |
| 5963000 | Object sensor system for automatic swing door A object sensor system for a swing door includes swing-side and approach-side sensors. Each of the sensors includes light-emitters and light-receivers which are mounted on a swing door. The light-emitters emit light toward a floor, and the light-receivers... | 10/05/1999 |
| 5883481 | Control system for electric vehicle A control system for an electric vehicle includes an accelerator opening detecting device for detecting a position of an accelerator, and an output command value calculating device connected to the accelerator opening detecting device for calculating an o... | 03/16/1999 |
| 5861813 | Safety securing device A rotation detecting means detects rotation of a mechanical movable portion and outputs a detection signal corresponding to the rotation rate of the mechanical movable portion. A rotation monitoring circuit, to which the detection signal from the rotation... | 01/19/1999 |
| 5619110 | Safety ensuring apparatus The present invention relates to a safety ensuring apparatus for ensuring the safety of an operator. A mechanical moving part is surrounded by a safety enclosure with a door of the safety enclosure provided with a door lock device constructed such that th... | 04/08/1997 |
| 4847721 | Safety device for a tool powered by an electric motor A safety device for a tool powered by an electric motor. It has a main switch, electronic controls, and a tachometer-generator. In order to provide a device for switching off a motor as a function of motor speed that is simple and economical and that will... | 07/11/1989 |
| 4595300 | Thermocouple drive assembly An assembly for driving a thermocouple into a thermocouple well includes two pinch wheels biased to grip the thermocouple probe between them. The pinch wheels are located adjacent to the thermocouple well. A reel of supporting cable is positioned remote f... | 06/17/1986 |
| 4590410 | Object sensing apparatus An object sensing apparatus includes a plurality of light emitting diodes for illuminating a region of space and a plurality of closely arranged light detectors for receiving light reflected from an object. The apparatus is particularly useful in connecti... | 05/20/1986 |
| 4220900 | Motor control system for a linearly reciprocating load device such as automotive vehicle closure including sun roof A system is provided to control a load responsive to a maximum load condition to disable the load when the maximum load condition exists, the control being altered first to provide a period of non-response during load start up and secondly to provide temp... | 09/02/1980 |
