In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7562749 | Roller guide A roller guide for guiding the movement of an elevator car along guide rails disposed in a shaft or hoistway. The roller guide includes a base, a plurality of rollers and a plurality of support arms that rotatably support the rollers. An isolation assembly may be pr... | 07/21/2009 |
| 7455151 | Elevator roller guide A guiding device (30) for an elevator system (20) facilitates guiding a cab (22) along guide rails (24). The guiding device (30) includes a roller mount (34) that supports rollers (36) such that the rollers remain a f... | 11/25/2008 |
| 7374022 | Elevator with a cable-driven car An elevator comprises a cable-driven car to which vertical guide rails are allocated. The cables are arranged on both sides of the car, each in a housing and acted upon by a common driving wheel. ... | 05/20/2008 |
| 7258204 | Guide device for guidance of a load carrier of an elevator installation A guide device guides a load carrier of an elevator installation along a guide surface and comprises a guide element contacting the guide surface and connected by a connecting element with the load carrier such that the guide element is movable relative to the load ... | 08/21/2007 |
| 7014013 | Guiding devices of elevator A device, which is provided at a car, for guiding the car along guide rails, the device comprises, a non-contact type of actuator configured to generate a magnetic force which keeps the actuator away from surfaces of a rail by predetermined distances, a unit configu... | 03/21/2006 |
| 7007774 | Active horizontal vibration reducing device for elevator An elevator vibration reducing device in which horizontal vibrations of a cage are detected by a vibration sensor. The cage is displaced horizontally by an actuator. A control portion for controlling the actuator has a computing portion for computing a vibration red... | 03/07/2006 |
| 6510925 | Elevator guide shoe Elevator guide shoe for guiding an elevator car along guide rails in an elevator shaft, said guide shoe comprising a supporting frame (2) attached to the elevator car (1) and guides (4) resting against a guide rail (3). According to the invention, the gui... | 01/28/2003 |
| 6474449 | Elevator and guide device for elevator In an elevator, guide devices are attached to the elevator and include a guide lever driven in a plane; a guide element attached to the guide lever; a stationary actuator part fixed to a support member; and a moving actuator part fixed to the guide lever,... | 11/05/2002 |
| 6345698 | Simplified roller guide A roller guide for improving the movement of an elevator car on T-shaped guide rails. The roller has first and second wheels rotatably mounted on an elevator car and spring biased to rollably engage the sides of the nose portion of a T-shaped guide rail. ... | 02/12/2002 |
| 6318950 | Unloader for tire vulcanizer An unloader for a tire vulcanizer includes a linear motion guide rail fixed vertically to a main frame of a tire vulcanizer; a slider movably engaged with the linear motion guide rail; a movable carriage having the slider so as to elevate along the linear... | 11/20/2001 |
| 6105728 | Handicapped duck blind elevator system A handicapped duck blind elevator system for elevating/lowering handicapped individuals to and from a conventional duck blind structure. The inventive device includes a support frame that is mounted adjacent a conventional duck blind, a lift cage frame sl... | 08/22/2000 |
| 6062347 | Resin stop assembly for roller guides An elevator system 10 includes an elevator car 12 with a plurality of roller guide assemblies 20 attached hereto. The roller guide assemblies 20 guide the elevator car 12 vertically within a hoistway along a plurality of guide rails 16. Each roller guide ... | 05/16/2000 |
| 6050370 | Guide roller apparatus for elevator system A guide roller apparatus for an elevator system includes a flat frame for fixing to each corner of the elevator car, and a lever having a lower portion hingedly connected to an upper portion of the frame and an upper portion rotatably connected to a rolle... | 04/18/2000 |
| 6032764 | Roller guide assembly with sound isolation A roller guide assembly for an elevator system includes a plurality of rollers and a damping subassembly. The damping subassembly includes a plurality of dampers and a sound isolation mechanism. The sound isolation mechanism interconnects the dampers and ... | 03/07/2000 |
| 6006867 | Elevator guide apparatus A guide apparatus for guiding and arresting an elevator running on column-like guides automatically prevents a transmission of guide alignment errors to the car and an unintended engagement of the arresting device. A roller carrier for engaging the guide ... | 12/28/1999 |
| 5984053 | Guide roller supporting apparatus for elevator car A guide roller supporting apparatus for an elevator car includes a guide roller supporting apparatus comprising guide rollers making contact with surfaces of a guide rail, respectively, each guide roller being rotatably mounted on an upper end of a carryi... | 11/16/1999 |
| 5960911 | Elevator system having guide rollers An elevator system includes a guide roller having a contact surface and a flange that extends outward from the roller. A guide rail for the elevator system includes a cam that is disposed to engage the flange of the roller. During extended periods of non-... | 10/05/1999 |
| 5955709 | Elevator control system featuring all-electromagnet vibration and centering elevator car controller for coupling a roller arranged on a pivot arm to a guide rail An elevator control system has a roller guide assembly comprising a plurality of rollers arranged in a cluster having at least one roller connected thereto for coupling an elevator car to a guide rail mounted on an elevator hoistway wall. The roller guide... | 09/21/1999 |
| 5950771 | Roller guide friction damper An elevator system includes an elevator car with a plurality of roller guide assemblies attached thereto. The roller guide assemblies guide the elevator car vertically within a hoistway along a plurality of guide rails. Each roller guide assembly includes... | 09/14/1999 |
| 5944144 | Traction drive elevator A traction drive elevator system preferably comprises a pair of vertical tracks, a car, and at least one counterweight for supporting at least a portion of the weight of the car. A traction drive, which preferably includes a frame which is separate from t... | 08/31/1999 |
| 5816369 | Method of mounting an elevator roller guide on a guide rail A method of installing roller guides in an elevator system so as to be centered on their respective T-rails. In the case of an elevator using either and active or semi-active roller guide system, the method uses the position transducers that are part of t... | 10/06/1998 |
| 5810120 | Roller guide assembly featuring a combination of a solenoid and an electromagnet for providing counterbalanced centering control The present invention provides a roller guide assembly for controlling the position of an elevator car in relation to guide rails of an elevator hoistway in an elevator system. The roller guide assembly includes at least one electromagnet means and at lea... | 09/22/1998 |
| 5715914 | Active magnetic guide apparatus for an elevator car An active magnetic guide apparatus for magnetically stabilizing an elevator car with respect to a guide rail is disclosed. The apparatus includes a magnetic guide assembly for magnetically stabilizing the elevator car with respect to the guide rail and a ... | 02/10/1998 |
| 5636712 | Apparatus for driving a self-propelled elevator A friction wheel drive apparatus for a self-propelled elevator car movable in an elevator shaft can be mounted on the top side or bottom side of the car. The drive apparatus is connected with a counterweight by a force transmission device for balancing th... | 06/10/1997 |
| 5632358 | Elevator roller guide An elevator roller guide includes a platform 12 having a supporting arm portion 12a and being arranged on a cage, a roller 3 in contact with a guide rail erected in a channel, an arm 6 which supports the roller 3 in a freely rotatable manner and which is ... | 05/27/1997 |
| 5544722 | Guide assembly A guide assembly has a roller to guide a conveyance within a shaft. The assembly includes first and second biasing devices and a support for the roller.... | 08/13/1996 |
| 5535853 | Actuator having a two ended actuator rod movable longitudinally and transversely An actuator having a part that is capable of moving both longitudinally and transversely may include a housing having a longitudinal axis with respect to which the movable actuator part can move within the housing both longitudinally and transversely. The... | 07/16/1996 |
| 5464072 | Self-propelled elevator system A self-propelled elevator car for vertical and horizontal travel in an elevator shaft has a plurality of driven friction wheels which are pressed against associated running surfaces by a passive contact force which produces the necessary friction and is i... | 11/07/1995 |
| 5447213 | Reinforced column for a lifting apparatus A reinforced column for a lifting apparatus which includes an elongated outer shell member having a rectilinear cross-section. One side of the outer shell member has an elongated aperture therethrough, allowing access to an interior portion of the column.... | 09/05/1995 |
| 5439075 | Elevator active suspension system An elevator car vertically guided along a hoistway rail has horizontal motions controlled by means of an actuator wherein horizontal acceleration of the elevator car and relative horizontal displacement between the car and the rail is sensed for controlli... | 08/08/1995 |
| 5397211 | Automatic storage and retrieval system A storage and retrieval machine comprising a generally horizontal rail including a rail member, a base, a linear slide supporting the base for movement along the rail member, a generally vertical mast supported by the base, a carriage supported for genera... | 03/14/1995 |
| 5355976 | Handling apparatus for automatic warehousing arrangement A handling apparatus for warehousing arrangement which is supported on and guided by a floor rail installed in, for example, a factory for movement along a predetermined track provided in front of load-in/load-out sections of a rack. A pair of front and r... | 10/18/1994 |
| 5338147 | Hoist apparatus for cargo compartment For use in transferring goods into and from a cargo compartment of a vehicle, trailer, container or the like, a hoist apparatus has a first frame having a pair of opposite side members extending in a first horizontal direction, the I-beams each having a v... | 08/16/1994 |
| 5330033 | Lift device comprising strap-like rail and bearings fitted to helical strap-like rail A lift device having shielded bearings and a strap-like rail that are designed to screw fit in each other. The shielded bearings are mounted in a circumferential thread fashion at a proper pitch on at least three pillars provided inside an outer shell cyl... | 07/19/1994 |
| 5321217 | Apparatus and method for controlling an elevator horizontal suspension A method and apparatus for counteracting a disturbing force acting on an elevator platform in a hoistway comprises sensing the acceleration and position of the platform and applying a force between the platform and the hoistway in proportion to the magnit... | 06/14/1994 |
| 5297658 | Roller cam adjuster for linear motors In an elevator system driven by a linear motor a small consistent air gap must be maintained between two elements of a linear motor for proper and efficient operation of the system. The air gap within the linear motor can be maintained and adjusted by uti... | 03/29/1994 |
| 5279393 | Automatic storage and retrieval machine with improved carriage side guide roller arrangement A storage and retrieval machine comprising a mast having a generally vertical outer surface, a carriage movable vertically along the mast, a bearing assembly including a wheel which is rotatably supported by the carriage, which rolls along the mast surfac... | 01/18/1994 |
| 5188199 | Warehousing traveling crane A traveling crane, comprising an upper frame, a lower frame, an elongated guide post between the upper and lower frames, an elevating platform adapted to move up and down along the guide post, a device for moving the elevating platform, and a load transfe... | 02/23/1993 |
| 5131502 | Hoisting apparatus for ships Hoisting apparatus, comprising a side loader, passenger or freight elevator for ships, having a cage which moves along a path at least partially curved. The hoisting apparatus include an elevator shaft mounted on the ship broadside provided with one or mo... | 07/21/1992 |
| 5127493 | Linear motor elevator system An elevator system driven by a linear motor and elevated up and down in a hoistway including a cage, a counter weight and a hoisting rope having both ends by and from which the cage and the counter weight are suspended so as to be alternatively elevated u... | 07/07/1992 |