Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7314862 | Antitumor agent The present invention relates to an antitumor agent containing a histone deacetylase inhibitor and a topoisomerase II inhibitor in combination. This combination has been found to exhibit a synergistic anticancer or antitumor effect compared to administration of eith... | 01/01/2008 |
| 7300023 | Machine for railway switching An in-tie machine for moving the movable elements of a switching device, such as the switch points of a switch point assembly or the moving V-point of a movable point frog, with a sliding device which selectively engages a control rod with either a fixed seat or a m... | 11/27/2007 |
| 7178764 | Device for operating rail switches In a device for operating rail switches, in which a plurality of mutually coupled hydraulic operating devices are arranged in an offset manner in the longitudinal direction of the rails, the cylinder-piston units of the hydraulic operating devices are connected to b... | 02/20/2007 |
| 7168662 | Hollow tie railroad switching assembly A switching assembly includes a pair of hollow ties, a pair of supports, and a linkage. The linkage extends generally through the hollow ties, whereby the cribs are generally free of linkage components, and the ballast in the cribs can be compacted with known automa... | 01/30/2007 |
| 7168663 | Point machine for movable frogs In a switch actuator for movable frogs (1), comprising at least one cylinder piston unit (5) having a defined preset piston stroke, the cylinder piston unit (5) is connected with bearings (6) capable of being displaced in the axial direct... | 01/30/2007 |
| 7070152 | Sleeper-mounted railroad-switch actuator A railroad switch actuator has a transversely extending box sleeper having a pair of ends, adapted to be secured to a pair of longitudinally extending fixed rolling rails, and adapted to slidably support a pair of longitudinally extending and transversely shiftable ... | 07/04/2006 |
| 6789770 | Device for locking the end positions of moving points components The invention relates to a device for locking the end positions of movable switch parts and, in particular, the movable point (1) of a frog, in which two relatively axially displaceable parts are capable of being displaced into a position coupled with each ot... | 09/14/2004 |
| 6666412 | Device for adjusting and elastically locking moveable switch parts A device for switching and elastically locking the end positions of movable switch parts, in particular switch tongues of grooved rail switches, including an axially displaceable rod (15) and a tube (17) surrounding the rod, in which a spring (29) encompa... | 12/23/2003 |
| 6616105 | Rail switch lock for points tongues This invention relates to a switch lock for switch tongues (2, 3) having at least one locking piece (6, 7) for attaching to a stock rail (4, 5), having at least one switch tongue attachment (8, 9) for attaching to a switch tongue (2, 3) and having a slide... | 09/09/2003 |
| 6354541 | Device for locking end positions of mobile switch parts A device for locking the end positions of movable railway switch parts in which two parts axially displaceable relative to each other are displaced into a position coupled to each other for movement in at least one direction. The relatively displaceable p... | 03/12/2002 |
| 6270041 | Method for locking moveable point sections An apparatus for mechanically locking the end positions of movable point sections, with two adjusting rods (12, 14 ), each of which is connected with one of the point sections and which are coupled mechanically with one another, with at least one locking ... | 08/07/2001 |
| 5730395 | Locking apparatus for locking a point of a rail switch, apparatus for operating and locking a point, a method of installing such apparatus, and apparatus for operating and locking a rail switch In a locking apparatus for locking a point of a rail switch, a control bar and locking bars are disposed side-by-side, touching, and parallel to one another; first and second notches are provided in the same side of the control bar and of each of the lock... | 03/24/1998 |
| 5669587 | Point detection and indication with latch out means There is provided an electric motor driven switch machine for positioning a railroad track at a switching point having rail point detection and indication mechanism. In particular, the detection and indication mechanism has a latch out mechanism that iden... | 09/23/1997 |
| 5620156 | Device for operating a switch for rail points A device for operating a switch of a railway track including switch blades. The device includes a drive module, a linear operating module coupled to and driven by the drive module for generating a linear movement and at least one locking module interconne... | 04/15/1997 |
| 5586737 | Switch machine cam bar There is provided a cam bar of a railroad track switch machine for locking a lock bar at a particular position. Specifically, a cam bar latch interconnects a locking section, for interlocking with the lock bar, to a positioning section, for controlling th... | 12/24/1996 |
| 5566912 | Device for locking of movable switch parts In a device for locking end positions of movable switch parts, in particular, a switch lock, two relatively movable parts are displaceable into a position non-positive in respect of at least one direction of movement. The relatively movable parts are form... | 10/22/1996 |
| 5509626 | Railroad track switch A railroad track switch has tongue rails which pivot relative to fixed stock rails and rolls onto which the tongue rails move when pivoted away from the stock rails. The rolls are carried at opposite ends in spring supports and each roll is mounted for le... | 04/23/1996 |
| 5499786 | Device for facilitating the re-positioning of moveable rails or rail components In a device for facilitating the re-positioning of moveable rails or rail components, in particular of tongue rails (7), in which the rails (7, 7'), during the re-positioning operation are supported on rollers (10, 10') forced against the underside of the... | 03/19/1996 |
| 5462245 | Apparatus for locking moveable switch parts In an apparatus that is used to lock the end positions of moveable switch-point parts, in particular a switch-point lock, in which two parts (2, 3) that are moveable relative to each other can be moved in at least one direction of movement in a position i... | 10/31/1995 |
| 5292091 | Operating device for railway switches, particularly for high-speed lines An operating device for railroad switches, particularly for high-speed lines. To permit more stable positioning of the blades (A1,A2) and of the frog (C) of the switch, which in high-speed lines are of considerable length, in addition to the switching act... | 03/08/1994 |
| 5222700 | Device for locking a switch blade A device for locking a switch blade with a stock rail which includes a locking piece connected to the stock rail. The locking piece has an opening through which the longer leg of an L-shaped locking clamp extends. A switch element also extends through the... | 06/29/1993 |
| 5195703 | Device for locking a switch blade with a stock rail A device for locking a switch blade (10, 12) with a stock rail (14, 16) is proposed, whereby the switch blade is held down on a supporting surface only when it is in locked and unlocked positions. When the switch blade (10, 12) is in the locked position i... | 03/23/1993 |
| 5020442 | Guideway station for a rotary guideway switch A switching station for a people mover rotary guideway switch. The switching station routes a transit car from an entry guideway path to either of two exit guideway paths. The station includes a guideway section structured at each of its entry and exit po... | 06/04/1991 |
| 5020441 | Electric coupling for rotary guideway switch A rotary switch for a people mover guideway having a predetermined path, guidebeam and electric rail configuration, routes a transit car having electric power signal collectors from one entry guideway path to either of two exit guideway paths or vice vers... | 06/04/1991 |
| 5012747 | Rotary guideway switch having guidebeam and/or electric rail structure located above and between guideway tire paths A rotary switch for a people mover guideway which as a pair of spaced tire paths with a predetermined tire path, guidebeam and electric rail configuration. The rotary switch routes a transit car from one entry guideway path to either two exit guideway pat... | 05/07/1991 |
| 4970967 | Rotary guideway switch for people mover systems A rotary switch for a people mover guideway having a predetermined tire path, guidebeam and electric rail configuration routes a transit car from one entry guideway path to at least either of two exit guideway paths or vice versa. The switch has an elonga... | 11/20/1990 |
| 4970966 | Self-aligning rotary guideway switch A rotary switch operates in a people mover guideway having a predetermined tire path, guidebeam and electric rail configuration to route a transit car from one entry guideway path to at least either of two exit guideway paths or vice versa. The switch has... | 11/20/1990 |
| 4970965 | Safety locking structure for a rotary guideway switch A rotary switch is provided for a people mover guideway having a predetermined tire path, guidebeam and electric rail configuration. The rotary switch routes a transit car from one entry guideway path to at least either of the two exit guideway paths or v... | 11/20/1990 |
| 4970964 | Single turnout rotary guideway switch and a dual lane crossover station employing the same A single turnout rotary guideway switch is provided with an elongated structural frame member having guidebeam, electric rail and tire path structure on each of two sides of the switch compatible with the guidebeam, electric rail and tire path structure o... | 11/20/1990 |
| 4970962 | Double turnout rotary guideway switch A double turnout rotary guideway switch is provided with an elongated structural frame member having guidebeam, electric rail and tire path structure on each of two sides of the switch compatible with the guidebeam, electric rail and tire path structure o... | 11/20/1990 |
| 4927102 | Reversing device for movable parts within the deflection area of a railway switch In a reversing device for movable parts of a railway switch within the deflection area of a railway switch, in particular tongue rails, monorail deflection device or movable stock rails, in which device the movable rails can be caused to contact rigid swi... | 05/22/1990 |
| 4921189 | Universal outer point lock device for railway point The invention relates to an outer point lock device for switchpoints, particularly on high-speed railways. This device comprises two point locks (1, 2) associated each with one of the blades (A1, A2) of the switchpoint. Each point lock comprises a box (3)... | 05/01/1990 |
| 4860978 | Control mechanism for railway switches A rail switch control mechanism including a locking clamp which is shiftable using a path rod. The locking clamp has, on an end facing the switch tonque, a swivel head. The swivel head is swivelably connected with a switch tongue. In use, the locking clam... | 08/29/1989 |
| 4534527 | All weather switch for railroads An improved railroad stub switch is described in which the axial rail tension or compression forces due to temperature fluctuations are transmitted through the switch by means of radius arms connected to both the switch and fixed rails, thereby eliminatin... | 08/13/1985 |
| 4213588 | Fluidically operated railway switch machine A railway switch machine including a first fluid operated actuator for switching the movable points of the rails between two extreme positions for establishing respective routes of travel for railway vehicles, valve device coupled to the first fluid opera... | 07/22/1980 |
