Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7037055 | Product restraining device A restraining device that is mountable on a track, has an elongated member and an attachment mechanism connected to an end of the elongated member, to mount the member on a track. The elongated member has a tubular core with an upper end and a lower end and a tubula... | 05/02/2006 |
| 6923607 | Coil stop for rail road coil car A coil car has a pair of deep side sills and a trough structure mounted to, and suspended between, the deep side sills for carrying coils. The side sills extend between the rail car trucks and act as a pair of deep side beams for carrying vertical loads. The deep si... | 08/02/2005 |
| 6561104 | Bogie for rail vehicles with wheels with a variable track A bogie for rail vehicles with wheels with a variable track includes a chassis supporting a body of the vehicle and four wheels connected to the chassis by articulated arms. Each wheel is movable transversely relative to the articulated arm to occupy at l... | 05/13/2003 |
| 6457419 | Train axle system with movable wheels A train axle system with movable wheels, comprising an axle whose necks, where the wheels are positioned, are provided with a toothing formed with straight teeth having axial generators, the inner part of the wheel hubs having a similar toothing so that t... | 10/01/2002 |
| 5816170 | Tractor bogie with incorporated gauge-change system A tractor bogie with an integral gauge-change system which includes two frames which support sets of running gear and have sliding and centering blocks to support the bogie and unweight the wheels as they pass through a gauge changer; a toothed extendible... | 10/06/1998 |
| 5787814 | Railway axle assembly furnished with automatic change of track gauge and adaptable to conventional freight bogies Railway axle assembly furnished with automatic change of track gauge and adaptable to conventional freight bogies. It comprises two independent rolling element assemblies (2), each composed of a wheel, a semiaxle, an outer bearing and an inner bearing, th... | 08/04/1998 |
| 5609108 | Track wheel kingpin system for a camera dolly A camera dolly has a track wheel system including a kingpin pivotally supported on a dolly chassis. A kingpin tube extends laterally from the kingpin. An axle is pivotally supported within the tube on pins. A track wheel around a bearing is supported on a... | 03/11/1997 |
| 5582111 | Railway axle with orientable wheels and variable width A railway axle assembly with orientable wheels (8) is compensated in width when passing on a railway track curve. The assembly comprises side beams (5,5') articulated to the opposing ends of a telescoping axle (4). The side beams (5,5') are coupled to eac... | 12/10/1996 |
| 5546868 | Variable wheel-spacing truck A variable wheel-spacing truck includes a pair of left and right bogie frames which are transversely movable relative to each other and can be fixedly connected with each other by releasable locking devices. At least one of the wheels is slidable relative... | 08/20/1996 |
| 5471933 | Truck wheel-spacing changing method, and variable wheel-spacing truck, and ground facility therefor A variable wheel-spacing truck is equipped with axle boxes slidably mounted on axles extending between side beams of a bogie frame. Axle box receivers are selectively and releasably connected with the axle boxes at a plurality of predetermined positions b... | 12/05/1995 |
| 5421265 | Truck wheel-spacing changing method, and variable wheel-spacing truck, and ground facility therefor A variable wheel-spacing truck includes a pair of left and right bogie frames which are transversely movable relative to each other and can be fixedly connected with each other by releasable locking devices. At least one of the wheels is slidable relative... | 06/06/1995 |
| 5419259 | Machine for compacting track ballast with variable gauge track stabilizer A mobile machine for compacting ballast comprises a machine frame extending in a longitudinal direction and supported by undercarriages on the track rails, and a ballast bed stabilizing apparatus vertically adjustably mounted on the machine frame. The app... | 05/30/1995 |
| 5329858 | Universal telescoping bulkhead door trolley assembly A trolley assembly for mounting a movable bulkhead door within a rail car. The trolley assembly includes a plurality of frame members that are telescopically interconnected and longitudinally adjustable with respect to each other so that the frame members... | 07/19/1994 |
| 4942826 | Vehicle having variable gauge rail wheels Rail wheels and road wheels of vehicles may be easily modified to differing axle lengths, so that, typically, the vehicle may roll on rails of differing gauges. An easily installable and removable spacer is provided to the axle systems of the vehicle.... | 07/24/1990 |
| 4941408 | Adjustable frame for rail wheels on motor vehicles adaptable to ride on railroad tracks The subject invention is an improved frame mechanism adapted to be deployed and otherwise integrally affixed on a land based motor vehicle that is adapted to retrofitted with rail wheels in addition to conventional land based wheels, in order to enable th... | 07/17/1990 |
| 3974780 | Changeable gauge railing truck Railway truck having side frames at a fixed lateral spacing with each side frame axle bearing support located between two track width locations to be accommodated, the side frames having universal-movement retaining mountings for replaceable rigid wheel-a... | 08/17/1976 |