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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 7282883 | Pivoting and barrier locking operator system A system for moving a barrier between limit positions, includes an operator motor assembly mounted proximate to the barrier, wherein at least a portion of the motor assembly is movable between an operating position and a locking position with the motor assembly bloc... | 10/16/2007 |
| 7254868 | winding and anti-drop assembly for door counterbalance system A counterbalance system (25) for a door (D) movable between a closed position and an open position having an axle (20), a cable drum (15) attached to the axle, a winding shaft (35) interconnected with the axle by a counterbalance spring (... | 08/14/2007 |
| 7246647 | Overhead door locking operator A system for raising and lowering a sectional overhead door between an open position and a closed position including, a counterbalance system adapted to be connected to the door, an operator motor assembly mounted proximate to the sectional overhead door in the clos... | 07/24/2007 |
| 7228797 | Cordless blind A cordless blind includes a headrail, a bottom rail suspended from the headrail by a first cord and a second cord, a wall covering disposed between the headrail and the bottom rail, and a drive actuator. The drive actuator includes a spring motor, a spool coupled to... | 06/12/2007 |
| 7210267 | Non-takeout lock for a pivot pin of tilt-type windows A slide block for slideably and pivotally mounting a window sash to a side member of a window frame having a vertical window jamb channel. The slide block includes a body, the body defining a sash pivot-receiving aperture. A sash pivot retainer spring is integrally ... | 05/01/2007 |
| 7190266 | Pre-installed appliance with warning system and methods of operation A limited-use appliance, such as a garage door operator or a home network bridge device, is disclosed which has at least one input device for generating an input signal and a controller associated with the input device and receiving the input signal. The controller ... | 03/13/2007 |
| 7185690 | Information presentation device An information presentation device and methods for mounting a display sheet to the device. The device includes an elongate housing having a first opening through which the display sheet passes. The display sheet is wound onto a drum within the housing. A releasable ... | 03/06/2007 |
| 7143804 | Overhead door locking operator with remote light assembly A system for raising and lowering a sectional overhead door between an open position and a closed position including, a counterbalance system adapted to be connected to the door, an operator motor assembly mounted proximate to the sectional overhead door in the clos... | 12/05/2006 |
| 7117636 | Simultaneously operating self balanced hung window A hung window includes upper and lower sashes that may operate simultaneously. Two or more pulleys or rollers are mounted at each lateral side of the window frame. A cable interconnects each lateral side of the upper and lower sashes. The cables are routed over the ... | 10/10/2006 |
| 7082722 | Method and apparatus for making an elongate spindle member of chain links for transfer of pressure and tensile loads An elongate spindle member having rigidity and stability against pressure and tensile loads as well as bending and torsional loads is made by winding-up a plurality of mutually interlocking chain links (1, 12), during axial advancement of the chain links, int... | 08/01/2006 |
| 7075256 | Method and device for adjusting an internal obstruction force setting for a motorized garage door operator An operator and related method for adjusting an internal force setting for a motorized garage door operator is disclosed. The operator checks for the presence of a secondary entrapment safety feature and automatically increases a force threshold setting from a first... | 07/11/2006 |
| 7061197 | Pivoting and barrier locking operator system A system for moving a barrier between limit positions, includes an operator motor assembly mounted proximate to the barrier, wherein at least a portion of the motor assembly is movable between an operating position and a locking position with the motor assembly bloc... | 06/13/2006 |
| 7047693 | Multi-coil spring window counterbalance assembly Disclosed is a multi-coil spring assembly that is mounted in the weight pocket of a vertically operating window. The multi-coil spring assembly allows the user to connect any desired number of coil springs to the counterbalance connector to provide the desired amoun... | 05/23/2006 |
| 7040372 | Information presentation device An information presentation device and methods for mounting a display sheet to the device. The device includes an elongate housing having a first opening through which the display sheet passes. The display sheet is wound onto a drum within the housing. A releasable ... | 05/09/2006 |
| 7025107 | One-way tensioning mechanism for cordless blind A cordless blind comprising a headrail, a bottom rail suspended from the headrail by a first cord and a second cord. A window covering disposed between the headrail and the bottom rail, a drive actuator including a spring motor and a spool for accumulating the cords... | 04/11/2006 |
| 6802105 | Spring balance assembly The present invention provides a spring balance assembly for use with a sash window. The spring balance assembly comprises a plate, clip, pivot brake assembly, and first and second coil springs. The plate has a first portion, second portion, and a generally perpendi... | 10/12/2004 |
| 6735905 | Ratcheting winding cone A ratcheting system is used to wind a helical torsion spring around a torsion bar in a counterbalancing mechanism for an overhead door having multiple panel sections. The ratcheting system contains: (1) a cylindrical sleeve encompassing the torsion bar, the sleeve h... | 05/18/2004 |
| 6684454 | Support mechanism for tilted window sash A cord tensioned by a spring supports the sash of a hung window in a stationary position while the sash is tilted for cleaning. The cord pulls a pulley attached to the spring which extends as the sash is further tilted. A tubing houses the spring and pull... | 02/03/2004 |
| 6575042 | Beam-type torsion applying and measuring tool A beam-type torquing and measuring tool having two telescoping members rotationally attached together at a first end of each, and they are relatively rotatable at the other end. One member transmits torque to the workpiece and has a pointer thereon, and t... | 06/10/2003 |
| 6378169 | Mounting arrangement for constant force spring balance A mount for one or more constant force curl springs uses a mounting block secured within a sash shoe channel to support the underside of a lowermost curl spring with a superposed curl spring mounted to counterrotate against an outer convolution of the low... | 04/30/2002 |
| 6378170 | Security seal for collars used to tension spring in garage door assemblies A security seal for a collar used for tensioning springs in garage door assemblies. A collar typically includes at least one set screw projecting outwardly and at least two winding holes. The security seal of the invention includes a generally longitudina... | 04/30/2002 |
| 6263541 | Winding cone of an overhead door counterbalancing mechanism and torsion spring winding method therefor A method of securing a torsion spring used in a counterbalance system in which the spring torsion cannot be released without first supporting any existing spring torque utilizes a torsion spring assembly including: a torsion rod extending along a longitud... | 07/24/2001 |
| 6155327 | Counterbalance system adjustment mechanism for rollup door A counterbalance spring adjustment mechanism, particularly adapted for a rollup type upward-acting door which is supported between spaced apart wall brackets on a rotatable shaft. One end of the torsion spring is connected to a hub including a tubular hub... | 12/05/2000 |
| 5964268 | Counterbalancing mechanism for an overhead door An overhead door apparatus utilizing a torsion spring counterbalancing mechanism. The counterbalancing mechanism includes a worm drive ring-shaped gear winding mechanism for setting the appropriate torque or number of winds in the spring. A counting mecha... | 10/12/1999 |
| 5778490 | Tension device for live axle doors A live axle tension device (15) that is suitable for adjusting the setting of a spring (16) on a live axle door (10). The tension device comprises a spring (16) that connects to a drum wheel (14) and to a spring connecting plate (22). The spring connectin... | 07/14/1998 |
| 5735020 | Counterbalance assembly The disclosed invention is directed to a torsion spring counterbalance assembly for closures, preferably for aircraft doors, although it is applicable to closures in other environments. The counterbalance system is designed to reduce the total assembly we... | 04/07/1998 |
| 5636678 | Counterbalancing mechanism for an overhead door An overhead door apparatus utilizing a torsion spring counterbalancing mechanism. The counterbalancing mechanism includes a worm drive ring-shaped gear winding mechanism for setting the appropriate torque or number of winds in the spring. A counting mecha... | 06/10/1997 |
| 5632063 | Counterbalancing mechanism for an overhead door An overhead door apparatus utilizing a torsion spring counterbalancing mechanism. The counterbalancing mechanism includes a worm drive ring-shaped gear winding mechanism for setting the appropriate torque or number of winds in the spring. A counting mecha... | 05/27/1997 |
| 5577544 | Extension spring system for an overhead door An extension spring overhead door system in which the spring may be quickly and easily placed in tension with the door in a closed position. A spring tensioning device is provided which eliminates the need for multiple installers to lift the full weight o... | 11/26/1996 |
| 5530991 | Block and tackle window balance A block and tackle window balance includes an extension spring and two blocks of pulleys mounted within a rigid channel. A spring coupling connects a free end of the extension spring to the first block of pulleys. The pulleys of the first block are sized ... | 07/02/1996 |
| 5419010 | Compact counterbalancing system for sectional doors A counterbalancing mechanism (10) for a door (D) movable between a dosed position proximate a door frame (12) and an open position displaced therefrom including a pair of drums (100, 100) for reeving lengths of cable (C) thereabout which are affixed to th... | 05/30/1995 |
| 5201897 | Spring balancer for a roll-up door An improved spring balancer (10) includes a shaft (13) rotatably mounted on a support (11). A first torsional spring (14) acts between the support and the shaft. A second torsional spring (19) acts between the support and a cable drum assembly (63) journa... | 04/13/1993 |
| 5054162 | Constant force compensation for power spring weight balance An apparatus for offsetting a constant force over a range of movement, includes a power spring or clock spring, defined by a length of resilient material wound in a spiral, the opposite ends of which are attached relative to one of the force and a fixed p... | 10/08/1991 |
| 4949425 | Spring loaded block and tackle window sash balance assembly A pre-assembled, spring loaded, block and tackle window sash balance assembly is adapted for providing vertical support for a window sash running in an elongated, generally upright sash run having a generally C-shaped guide channel extending along its plo... | 08/21/1990 |
| 4935987 | Self-contained heavy duty constant force sliding sash counterbalance assembly A self-contained heavy duty constant force sliding sash counterbalance assembly embodying a stacked plurality of coil springs each having a uniform coiling and recoiling force throughout all of the various coils irrespective of the individual coil spring ... | 06/26/1990 |
| 4930182 | Apparatus for counterbalancing an overhead door An apparatus for counterbalancing an overhead door includes a spring anchor assembly adapted to be connected between one end of a torsion spring and a wall of a building at an overhead door opening and a spring winding assembly adapted to be connected bet... | 06/05/1990 |
| 4914780 | Compound counterbalance and winding systems with zero torque spirals A compound counterbalance system for window sashes and the like, comprising: a biasing spring for easing operation of a window sash and the like, the biasing spring being movable at an inherently variable rate of force; a first biasing force transmission ... | 04/10/1990 |
| 4882806 | Counterbalancing torsion spring mechanism for devices which move up and down and method of setting the torsion springs thereof Counterbalancing mechanism for a garage door or other device in which a torsion spring end member is fastened to a second member to which it is connected during normal operation of the counterbalance by cooperating interfitting elements on the members whi... | 11/28/1989 |
| 4800680 | Cord guide system for sash balance A block and tackle balance system (10), contained within a spring cover (12) extending for the full length of a jamb liner (11), includes a guide (30) that directs a cord (25) through an angled course as it passes from the balance (20), through a hole (13... | 01/31/1989 |
| 4760622 | Compound winding apparatus and counterbalance systems A compound counterbalance system for window sashes and the like, comprising: a biasing mechanism for easing operation of a window sash and the like, the biasing mechanism being movable at an inherently variable of force; a first biasing force transmission... | 08/02/1988 |
