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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 7319391 | Centralised security closure A device of automated closure, and of locking, comprising a mobile closure or locking element (2), an actuator (3) electrically controllable for the motion of the element, a sensor (4), a programming and control device, the program of which comp... | 01/15/2008 |
| 7228804 | Door system for transit vehicle utilizing compression lock arrangement A locking arrangement for a door system of a transit vehicle includes a combination of a lock mechanism and an electromagnetic brake. The lock mechanism enables positive locking of at least one door but does not require substantial contact between moving and station... | 06/12/2007 |
| 6973753 | Sliding door system The invention pertains to a sliding door system with at least one automatically driven sliding leaf, which is guided on a traveling carriage and a support profile, where the drive and a runway rail are mounted in a housing above the sliding leaf, and where the slidi... | 12/13/2005 |
| 6863000 | Passenger rail car sliding door with high platform threshold An improved door assembly has a single movable door and may have a separate movable high platform threshold. The door assembly is formed of an upper door section and a lower door section which is fixed to the upper door section. A support member may be integral with... | 03/08/2005 |
| 6863001 | Side sliding door apparatus for electric railcar A sliding door apparatus has a sliding door movably supported on a horizontal door rail for opening and closing an entrance of a vehicle, i.e. railroad car. The sliding door is locked when a latch member engages a fixing member disposed on the sliding door. When an ... | 03/08/2005 |
| 6854399 | Side sliding door apparatus for electric railcar A side sliding door apparatus for an electric railcar includes two sliding doors movably supported by a horizontal door rail to open and close an entrance of the electric railcar. The side sliding door apparatus includes an actuator for actuating the sliding door, a... | 02/15/2005 |
| 6591760 | Door for a railway vehicle A portal system for a railway or other vehicle having steps from the interior flooring downwards to the ground has a bridge platform to be deployed for use when the vehicle is stopped at a railway station platform. A threshold member closes at least part ... | 07/15/2003 |
| 6401629 | Door for railroad car The invention relates to a door for a railway vehicle, intended for a door opening having steps, on which there are provided a platform and a threshold above the steps to permit disembarking onto a railway platform situated higher than the steps. The inve... | 06/11/2002 |
| 6341563 | Door opening control apparatus A platform sensing and control system including a wireless sensor (10, 12) for sensing at least the presence of a platform (26) opposite a door (32) of a railcar and providing an output indication of at least a platform presence in response thereto, and a... | 01/29/2002 |
| 6141908 | Transit vehicle door system The invention provides a door system for a transit vehicle. It has an actuator which provides a rotary motion about an axis of the actuator for moving the door panel between an open position uncovering the aperture and a closed unlocked position covering ... | 11/07/2000 |
| 5936232 | Railway safety system having a passenger car detection A railway safety system is provided for use in combination with a railway, a ledge situated adjacent the railway, and a passenger car with at least one access door. The present invention includes a vertical wall situated on the ledge and at least one tran... | 08/10/1999 |
| 5626078 | Cable car system with passenger carriers suspended from a suspension and traction cable guided around two deflection pulleys A cable car system has a suspension and traction cable carrying passenger rriers, such as lift chairs. The cable is guided around two deflection pulleys. A conveyor device conveys passengers from an entrance gate to a boarding point at which the passenger... | 05/06/1997 |
| 5460100 | Service bypass apparatus for automatic door operator on a passenger railway vehicle A service bypass apparatus for isolating a door from an automatic door operator on a passenger transit type railway vehicle, and lock such door in a closed position, which includes a partially rotatable shaft having a blocking lever arm rigidly secured to... | 10/24/1995 |
| 5295441 | Sliding door apparatus for platform A sliding door apparatus for a railway platform, has a plurality of sliding doors provided along an edge of a railway platform, the plurality of sliding doors being, in a closed position, arranged continuously along a line; a sliding door shifting apparat... | 03/22/1994 |
| 5253589 | Folding door apparatus for a railway platform A folding door apparatus for a railway platform has a plurality of continuously provided folding doors each composed of two elements, a mid-portion between the two elements serving as an inflection point, the plurality of folding doors being movable betwe... | 10/19/1993 |
| 5226370 | Transit car door system and operation A computer assisted transit car door operating system for augmented automation of transit car door panel operation while providing safety provisions to restrain rail movement unless all passage doorways are closed. A programmable logic controller generate... | 07/13/1993 |
| 5213048 | Chairlift chair assembly with movable enclosure A chair assembly (20) for chairlift including a seat (22) and enclosure member (43) mounted to the seat (22) for movement between open and closed positions. The chair assembly (20) has a drive (51) for moving the enclosure (43) which includes a rail (52) ... | 05/25/1993 |
| 5176082 | Subway passenger loading control system A passenger detection loading and unloading control system is provided for high volume passenger transporters such as subway trains and the like which electronically counts the passengers in each passenger compartment and prepositions passengers that inte... | 01/05/1993 |
| 5134350 | Door controller for mass transit vehicles A door opening system particularly suited for doors on mass transit vehicles. Through position sensing, electronic circuitry, mechanical linkage, brushless motor and pwm amplifier; opens and closes one or more doors, inhibits vehicle from running when doo... | 07/28/1992 |
| 5119739 | Transit car door system and operation A computer assisted transit car door operating system for augmented automation of transit car door panel operation while providing safety provisions to restrain rail movement unless all passage doorways are closed. A programmable logic controller generate... | 06/09/1992 |
| 4981084 | Transit car door system and operation A computer assisted transit car door operating system for augmented automation of transit car door panel operation while providing safety provisions to restrain rail movement unless all passage doorways are closed. A programmable logic controller generate... | 01/01/1991 |
| 4909153 | Transport systems using passive vehicles The invention concerns a variable speed transportation system using passive vehicles. The passive vehicles (1) are driven at variable speed by tubes (4) rotating in bearings (13) mounted on cross-bars (14) supporting the rails (2 and 3) and by rollers rol... | 03/20/1990 |
| 4766696 | Automatic sliding door operating device for guided vehicle A tracked transportation system uses an automatic car door opening and closing system. The car door or one panel of a two-panel door carries a lever on which is a rear abutment member designed to roll along an outside surface at the bottom of the car. Thi... | 08/30/1988 |
| 4679508 | Transit vehicle door control apparatus A transit vehicle having a door includes a zero speed condition detection apparatus provided to logically supply a zero condition output signal for each of a plurality of axles when both of the tachometers for each of those axles are under a predetermined... | 07/14/1987 |
| 4656950 | Transit vehicle door control apparatus A door control apparatus is provided for a transit vehicle for sensing the location of a predetermined power rail in relation to a safety walkway provided along the roadway path for controlling the passenger exit from the vehicle to that walkway.... | 04/14/1987 |
| 4655144 | Cabin for accommodating passengers A passenger cabin for an aerial cable railway or the like is constructed from outwardly convex panels connected at their adjoining edges by hollow profile sections. One sidewall of the cabin is equipped with a door. Sensing members of the cabin engage con... | 04/07/1987 |
| 4503778 | Transportation system A transportation system for rapidly loading people from a platform into and from a plurality of cars. The system includes an elongated trackway which extends along a platform. Trolleys extend between the trackway and the cars supporting the cars on the tr... | 03/12/1985 |
| 4409905 | Device for moving the two sliding doors of a car of a continuous cable-way with automatic clamping A device for controlling the movement of the two doors is housed in a tile-shaped elongate support which is disposed above the doorway and is pivoted about a horizontal axis extending longitudinally of the roof of the car. The tile-shaped support carries ... | 10/18/1983 |
| 4391200 | Medium distance transport device The device comprises cabins allowing a front or side access, each cabin having a first part and a second part. The first part of the cabin comprises a frame (6), rolling along a rolling track (1,2), carrying a fixed floor (11) surrounded by a fixed protec... | 07/05/1983 |
| 4290368 | Manual and motor actuated railway car door A sliding door for railroad cars which may be manually operable but is also provided with a pneumatic device and a pneumatic control circuit operably connected to the door for closing the door by power operation, which pneumatic device, after effecting po... | 09/22/1981 |
| 3971324 | Automatically actuated suspended railway cabin closures A cable transport system for cabins wherein at each station there are secured two control rails and wherein each cabin comprises a door which, in its closed condition, is locked by a locking mechanism, the door being operatively connected with an actuatio... | 07/27/1976 |
