Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7100724 | Rocking device A rocking device is described for receiving a lower part of a carriage, perambulator, cot or the like in particular to rock an infant therein, with oscillation means to impart an oscillating motion thereto comprising an elongate roller (2) mounted about a gen... | 09/05/2006 |
| 5749547 | Control of model vehicles on a track A controller for model trains on a train track is provided. The controller causes direct current control signals to be superimposed on alternating current power signals to control effects and features on model vehicles. The model vehicle includes a receiv... | 05/12/1998 |
| 5463961 | Motorized track guided vehicle for infants with soothing track bumps A motorized amusement device especially designed for infants is provided. The device includes a truck assembly for securing a pre-existing infant support device such as a car seat. A reconfigurable track assembly is provided so that the device can be used... | 11/07/1995 |
| 5441223 | Model train controller using electromagnetic field between track and ground A controller for model trains on a train track is provided. The controller transmits control signals between a rail of the track and earth ground, generating an electromagnetic field which extends for several inches around the track. A receiver in the loc... | 08/15/1995 |
| 5251856 | Model train controller for reversing unit A control circuit which will momentarily apply a pulse of power to the E-Unit solenoid in response to the momentary interruption of power by the transformer or another control signal. The E-Unit rest state is thus with no power applied, eliminating noise ... | 10/12/1993 |
| 5118055 | Reduced voltage braking system in a linear motor in-track transit system A transit system implementing a reduced voltage braking scheme is provided. The transit system includes a guideway extending between freight loading and freight unloading stations. Freight carrying vehicles are moveable along the guideway between the stat... | 06/02/1992 |
| 4768443 | Working apparatus, especially a cleaning apparatus used in conjunction with a textile machine The working apparatus, useful as a cleaning apparatus for textile machines, comprises a mobile servicing or working unit possessing a ventilator cooperating with air guide elements and operates in cleaning zones located at these textile machines. The serv... | 09/06/1988 |
| 4690066 | Electromagnetically floated carrier system with stopping unit A carrier which transports semiconductor chips or the like can run along two rails made of a ferromagnetic material and extending along a running path. The carrier has four supports projecting from its bottom. Four magnets units are supported by the suppo... | 09/01/1987 |
| 4388036 | Toy car and roadbed unit A toy car and roadbed unit which comprises a roadbed on which there is provided at least one electric track including three conductive paths which are connected to a positive output terminal, a negative output terminal and a center tap of the DC power sou... | 06/14/1983 |
| 4341982 | Simultaneous independent control system for electric motors A system for simultaneously and independently controlling a plurality of electric motors from a number of dispersed stations. The system operates by transmission of duty cycle modulated selected frequencies superimposed on a DC track voltage on a common p... | 07/27/1982 |
| 4316346 | Spur track accessory operation A toy vehicle movable on a track operates an accessory with its wheels when it abuts a stop member. A manually operable remote control is used to then reverse the rotation of the wheels to remove the vehicle from the stop member.... | 02/23/1982 |
| 4311211 | Service system A typical embodiment of the invention described herein discloses a prepared and packaged food delivery system that permits one attendant to serve several car ports. An electrically driven carrier for transporting a gimballed tray for money and foodstuffs ... | 01/19/1982 |
| 4258450 | Apparatus for blowing and suctioning fiber fly from textile machines A mobile apparatus for pneumatically blowing and suctioning fiber fly or lint from textile machines by means of blowing and suctioning means respectively connected to a common fan by means of nozzles and suction members which sweep past the textile machin... | 03/31/1981 |
| 4217727 | Miniature monorail system A toy monorail system of the support type for vehicles such as miniature railway cars and slot cars. The monorail track consists of an elongated flat strip or length of plastic having flat metal conductors located in flanged recesses molded into each side... | 08/19/1980 |
| 4185561 | Automatic switching system An automatic switching system particularly adapted for railroad hobbyists whereby the complicated polarity switching usually required is eliminated. Apparatus is associated with each insulation point in a track section (block) to sense the direction of tr... | 01/29/1980 |
| 4142323 | Track and motor with resiliently connected flywheel This amusement device includes a suspended flexible track attached to a support at one end, and a motor driven device slidingly mounted to the track in guided relation. A control system is provided which includes a pair of elongate clutch elements wrapped... | 03/06/1979 |
| 4017131 | Maximum density mobile storage system A maximum density mobile storage system in which groups of racks or other storage devices are arranged side by side in a row or bay along side a loading and unloading aisle or corridor, the individual racks being selectively movable individually or in gro... | 04/12/1977 |
