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| Number | Title | Issue Date |
| 7246648 | Friction device for rolling up curtains and the like A friction device for rolling up curtains and the like includes a tubular roller (1), on which a curtain (1a) is wound. The roller (1) is rotatably carried by a support (10) and a threaded stem (2) is situated axially inside... | 07/24/2007 |
| 7048319 | Easy-to-use safety net device The invention relates to a safety net device with a housing, in which a winding shaft is rotationally mounted. The winding shaft is pretensioned by a spring motor in the direction of winding of a safety net which is fixed to the winding shaft. The other edge of the ... | 05/23/2006 |
| 7036547 | Height adjustable pleated shade An assembly including a shade capable of height adjustment, comprising shade including multiple pleats, a roller, one strap that extends through multiple pleats of the assembly, and the at least one strap operatively connected with the roller to be rolled on the rol... | 05/02/2006 |
| 7017302 | Balance control system for a movable barrier operator A balance control system comprises a motor, a transmission system providing connection between the motor and the door and adapted to move the door between a closed position and an open position located above the closed position, a counterbalance system to reduce pow... | 03/28/2006 |
| 6955207 | Friction device for roll-up curtains and the like A friction device (10), applied to roll-up curtains and the like, includes a tubular roller (1), on which the curtain (2) rolls up, and which is rotatably carried on a horizontal axis. The friction device (10) includes a threaded shaft ( | 10/18/2005 |
| 6114820 | Power window apparatus having safety unit A power window apparatus is provided for detecting pinching in accordance with the opened/closed position of the window and a state of rotation of a motor, the apparatus having a position sensor which detects a safety-control suspension region of the wind... | 09/05/2000 |
| 5929580 | System and related methods for detecting an obstruction in the path of a garage door controlled by an open-loop operator An internal entrapment system for a garage door operator (30) includes a motor (48) for transferring a garage door (12) between first and second positions. Also included is a pulse counter (62) for detecting a speed of the garage door (12) during transfer... | 07/27/1999 |
| 5507374 | Clutch controlled roller shade mechanism with integral overrunning ratchet A bi-directional sprang clutch further including a ratchet and pawl so as to permit substantial torque to be transmitted to the shade roller only in one direction. In the other direction, the roller is nearly free to rotate so that the weight of the shade... | 04/16/1996 |
| 5375643 | Spring clutch assembly with reduced radial bearing forces A spring clutch assembly with reduced radial bearing forces is described. The clutch includes a shaft, at least first and second helically wound axially mounted springs for making frictional contact with the shaft, and engaging means corresponding to each... | 12/27/1994 |
