"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7244205 | Key sprocket drive system A key sprocket drive system for a conveyor belt having a drive drum having an outer surface. The outer surface of the drive drum is adapted to engage a securement means. A contoured collar has an inner surface and an outer surface. The contoured collar is adapted to... | 07/17/2007 |
| 7147099 | Sprockets in a cleanable modular belt conveyor An easy-to-clean conveyor with sprockets that reveal the hinge area of a modular conveyor belt to a fluid spray. A conveyor includes a modular belt constructed of rows of belt modules hingedly linked together in series by hinge pins into an endless belt loop. A spro... | 12/12/2006 |
| 6758776 | Split sprocket assembly, related apparatus, and related mounting method A split sprocket assembly, related apparatus, and a method of mounting a sprocket to a rotatable structure, such as a drive or idler drum, are disclosed. In one embodiment, the sprocket assembly is comprised of at least three sections or segments, each of which is s... | 07/06/2004 |
| 6733093 | Split wheel and method for installing endless track This invention relates to endless tracks and systems used to propel tracked vehicles [i.e., vehicles which use endless tracks rather than tires to contact the terrain over which they are driven, e.g., tractors, tanks, bulldozers, etc.] and, more particularly, to an ... | 05/11/2004 |
| 6176797 | Adaptor for power transmission in a pulley and shaft An adaptor for power transmission in a pulley and shaft. Two adaptor portions are disposed on opposite sides of the pulley and drawn axially together to capture the pulley therebetween. At least one of the adaptor portions is attached to a quick disconnec... | 01/23/2001 |
| 6161445 | Guide sprocket assembly A guide sprocket assembly for use in combination with a non-driven, rotating tail shaft. The guide sprocket assembly includes a lock plate assembly securely fixed to the tail shaft for rotation along with the tail shaft. The lock plate assembly includes a... | 12/19/2000 |
| 6146299 | Split drive sprocket for a conveyor belt A sprocket of the type typically used for driving a plastic conveyor belt is split through the drive shaft hole at its center, so that the sprocket can be assembled over a drive shaft without disrupting the conveyor assembly. Two sections which form the d... | 11/14/2000 |
| 6086495 | Split sprocket assembly A split sprocket assembly. The sprocket assembly does not require additional separate fasteners and extends substantially parallel to the axis of the drive shaft. Further, the sprocket assembly includes first and second sprocket sections having integrally... | 07/11/2000 |
| 6074316 | Split sprocket device A split sprocket is formed in two opposing half sprocket parts of essentially identical conformation and structure. The halves, when married, form a typical sprocket which may also be a gear or drive pulley. A ring is adapted to engage a circular groove o... | 06/13/2000 |
| 5927479 | Chain drum arrangement for scraper chain conveyors A chain drum arrangement for a central or double central scraper chain conveyor which includes a divided chain wheel and shell-type chain wheel segments which are attached and locked in rotation to or detachably from the shaft. The chain wheel is secured ... | 07/27/1999 |
| 5888158 | Sprocket used in wastewater treatment facilities There is provided a sprocket for use in a wastewater treatment facility comprising a first portion, a second portion, and at least one fastener which snap locks the first portion to the second portion. There is also provided a sprocket for use in a wastew... | 03/30/1999 |
| 5848947 | Split power transfer member A pair of sprockets for use in a double chain and sprocket coupling for transmission of torque between shafts which are in approximate axial alignment with each other, and the abutting ends of which are closely spaced. Each of the sprockets is formed as o... | 12/15/1998 |
| 5810686 | Divisible sprocket wheel The invention relates to a divisible sprocket wheel manufactured from synthetic material and having a gear ring (1b) and a hub portion (1a), comprising two wheel halves (1) which are manufactured by means of injection molding and have their axial faces (1... | 09/22/1998 |
| 5702316 | Modular split sprocket assembly A split sprocket assembly mountable on a shaft comprises a pair of substantially semi-circular sprocket halves, each of the sprocket halves having a mating face joined at a split line between the sprocket halves and having a concentric bore. Each of the s... | 12/30/1997 |
| 5322478 | Divisible sprocket wheel Sprocket wheels for use in chain conveyors, for instance, are preferably of a divisible construction so as to enable each wheel to be removed from the shaft separately. Also, on the basis of considerations of hygiene, the outer side surface of such a whee... | 06/21/1994 |
| 5310383 | Split motorcycle drive pulley A motorcycle drive pulley is diametrically split to eliminate the necessity for removing the motorcycle rear wheel in order to change drive pulleys. The split drive pulley bolts to the rear wheel of a belt driven motorcycle. The pulley has a first surface... | 05/10/1994 |
| 5304101 | Shaft mountable bushing and hub for industrial power transmissions A bushing and hub assembly are clamped together and clamped on a shaft by passing screws through an annular flange provided on the hub and into threaded openings in the bushing. The outside of the bushing is tapered and the inside bore of the hub has a ta... | 04/19/1994 |
| 5295917 | Split sprocket with quick locking mechanism A split sprocket with quick locking mechanisms is made of non-metallic components. The split sprocket is coupled to a shaft element by removable wedge members disposed between the sprocket's half members. Key members, in conjunction with set screws, secur... | 03/22/1994 |
| 5284457 | Belt guide pulley There is provided a clam shell shaped belt guide pulley having first and second curved halves which are hinged together. Each pulley half has curved inner and outer surfaces. The pulley is adapted to be placed on a large diameter shaft without the need to... | 02/08/1994 |
| 5279526 | Replaceable sprocket wheel assembly for modular link belt systems Sprocket wheels for modular plastic link belts are made in two mating halves for expediting removal perpendicularly away from a coaxial drive shaft about which they are supported without disassembly of the shaft. To assure axial alignment and stability of... | 01/18/1994 |
| 5222919 | All plastic idler pulley assembly A three-piece, all-plastic idler pulley assembly. There is a first unitary bell end portion having a first circular, inward-facing face with a concentrically-disposed, cylindrical shaft extending outward therefrom and perpendicular thereto. The cylindrica... | 06/29/1993 |
| 5158505 | Guide ring A split guide ring for use with a split sprocket which is mounted on a shaft and used to support and drive conveyor and drive chains.... | 10/27/1992 |
| 5061225 | Chain wheel for chain conveyor belts A chain wheel for conveyor installations with chain conveyor belts, and which chain wheel is mounted on the drive shaft (5) of the driving device for the conveyor belt. The chain wheel is designed in such a manner that it can be easily repaired and altere... | 10/29/1991 |
| 5057058 | Split pulley A split pulley made of a resilient material which is held together by a circumferentially extending strap carried wholly within the body of the pulley.... | 10/15/1991 |
| 5037356 | Split sprocket assembly A split power transmission element, such as a sprocket, mountable on a driven shaft. A pair of substantially identical sprocket halves each include a pair of aligned, hollow, fastener sleeves extending diagonally through the plane of the sprocket. A pair ... | 08/06/1991 |
| 4591352 | Tension roller A tension or idler roller for a belt drive system has an outer roller for engaging a belt, an inner support body adapted to be affixed to a machine, and a rolling bearing between the outer roller and the support body. The support body is comprised of a pa... | 05/27/1986 |
| 4506559 | Split pulley The invention proposes to form the flanges (11,12) of a driving pulley as a part of the driving shaft (10), for example by moulding the shaft (10) and the flanges (11,12) so as to constitute one unit, the portions (18,19) of the driving pulley being attac... | 03/26/1985 |