Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 8132610 | Window covering A window covering includes a first rail, window covering material, lift cords that extend from adjacent the first rail to the window covering material, and at least one pulley and at least one pulley release device. At least one pulley is positioned so that at least... | 03/13/2012 |
| 7735539 | Fire-resistant smoke-suppressant device A deployable heat and smoke obstacle is disclosed. A screen is wound around a shaft over a passageway in a building or a vehicle. The shaft can rotate in response to an alarm signal to deploy the screen over the passageway to prevent smoke and heat from passing thro... | 06/15/2010 |
| 7395850 | Winding-up screen device A winding-up screen device in which, when a screen is wound around a winding axis, a screen guide for guiding the edge portion of the screen unwound from the winding axis is not left on the opening frame of a building. A joining groove is provided in the screen guid... | 07/08/2008 |
| 7370683 | Lifting-cord winding mechanism of solar-radiation shielding device A lifting cable winding mechanism of a solar radiation shielding device capable of uniformly winding lifting cables for lifting solar radiation shielding materials on the peripheral surfaces of winding drums and minimizing the extra lengths of the lifting cables rem... | 05/13/2008 |
| 7350556 | Roll-up pole for tent panel A role-up pole assembly includes telescoping tubular members (20, 26) that are extended to a predetermined position where the open ends (22, 28) thereof are aligned with the edges of a canvas panel (32). A clamp mechanism (38) is retained... | 04/01/2008 |
| 7318251 | Safety buckle of curtain A safety buckle of a curtain comprises a curtain body and an upper beam; an auto slide-stop installed within the upper beam for controlling the curtain body to a predetermined position; and a control rope set having a first end and a second end which are at opposite... | 01/15/2008 |
| 7302738 | Safe disengaging device for the pull cord of a blind A safe disengaging device for the pull cord of a blind includes a male support base and a female support base. The male support base is fixed on the upper frame of a blind and provided with a protruding clasping block having its upper side formed with an engage shou... | 12/04/2007 |
| 7299847 | Fire door control system and method A fire door control system permits user input during regular use and during alarm conditions. The system utilizes primary and secondary power sources and incorporates a variety of preventive safeguards assuring that functionality of the fire door control system will... | 11/27/2007 |
| 7299848 | Closure member control systems, including door control systems for barrier housings, and associated methods Closure member control systems, including door control systems for barrier housings, and associated methods are disclosed. One aspect of the invention is directed toward a closure member control system that includes a closure member positioned to cover a portion of ... | 11/27/2007 |
| 7281561 | Multi-layered film window system A high R-rating window assembly storing multiple, reciprocating reflective flexible film layers in a sealed housing between rigid (e.g. glazed) layers. The glazed layers are separated on the order of 3 to 5-inches and are secured to low thermal conductivity framewor... | 10/16/2007 |
| 7275581 | Device with shutter winding about a drum A shutter device co-operating with driving means for enabling the shutter (1) to be displaced between an open position and a closed position, this shutter (1) being guided by a guide track (4, 5) and being designed to close off a bay (6) ... | 10/02/2007 |
| 7259485 | Magnetic brake for window covering powered by DC motor A braking magnet is attached to the housing of a motor of a motorized component such as a window covering. With this structure the motor is braked from turning under the weight of the window covering when deenergized. ... | 08/21/2007 |
| 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 |
| 7210646 | Cord seat assembly A cord seat assembly includes a seat, a spool rotatably supported by the seat, and a cord. The seat includes an end wall and a through-hole in a bottom thereof. The cord extends through the through-hole of the seat. The cord is wound around the spool and includes an... | 05/01/2007 |
| 7195051 | Collapsing and securing device of lateral blinds A collapsing and securing device of a lateral blind includes a lateral blind such as a winding blind, a Roman blind, or a cloth blind, and a number of positioning members fixed at least on one surface of the window curtain, and the positioning members can temporaril... | 03/27/2007 |
| 7178577 | Reeling unit for a blind A reeling unit for a blind has a base (30) and a roller (40). The base (30) has a bottom plate (31), two side brackets (34, 35), and a string hole (33) defined in the bottom plate (31). The roller (40) has two ... | 02/20/2007 |
| 7152653 | Roll-up curtain assembly A multi-section roll-up curtain is raised and lowered by plural support/rotational drive mechanisms disposed in a spaced manner along the length of the curtain. Each drive mechanism is symmetrically loaded with a curtain section attached to opposed sides of each dri... | 12/26/2006 |
| 7114421 | Fabric blind cut down apparatus and method of trimming fabric blinds A method of trimming the width of a blind having a head rail and a fabric panel depending therefrom, by a predetermined trim measurement, by trimming a first length from the head rail, retracting the head rail away from a first side edge of said fabric panel, trimmi... | 10/03/2006 |
| 7086445 | Cover for an elongate opening Waste materials are composted in an elongate pit which is maintained covered to retain odors. The pit includes two rails each arranged along a respective side of the opening for receiving operating machines and a carriage for supplying a covering sheet. Each side ed... | 08/08/2006 |
| 7086446 | Breakaway cord system for roll-up shades A cord connection device for roll-up shades has a coupling member that fits over a receptive member. The body of the receptive member has a section configured to receive the coupling member in a manner to provide a connection such that when a selected force acts on ... | 08/08/2006 |
| 7073758 | Pole clamp for partition mount A partition mounting system a system mitigates or eliminates sag, or gaps, between an installed curtain and an abutting surface such as a wall or ceiling. The system accomplishes this in a manner that avoids permanent damage to the wall or ceiling surface. A clamp i... | 07/11/2006 |
| 7059377 | Double-layer roller blind A double-layer roller blind includes a first roller and a second roller horizontally arranged in parallel at the top side of a window, a first shade fastened with a top edge thereof to the first roller, a first bottom bar fastened to a bottom edge of the first shade... | 06/13/2006 |
| 7044732 | Rolling process cover A cover for the opening of a process tube of a furnace used in semiconductor manufacturing is comprised of a substantially continuous sheet of metal so that it may be rolled opened and closed while being against the opening of the process tube by a guide frame. The ... | 05/16/2006 |
| 7029055 | Slidable window assembly with vent screen A window assembly for a motor vehicle includes an opening defined by a pair of spaced apart stationary windows. Above and below the opening are a pair of opposing horizontal guide rails within which a moveable window slides allowing the opening to be selectively cov... | 04/18/2006 |
| 7028742 | System and method for sealing openings in response to smoke, noxious fumes, or contaminated air using a roll-down barrier A system and method for rapidly and reliably sealing off a selected opening from the passage of smoke, noxious fumes, or contaminated air includes a powered clutch and viscous governor that provides a fail-safe mode of operation. A curtain is positioned in a housing... | 04/18/2006 |
| 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 |
| 7017230 | Safety buckle of curtain A safety buckle of a curtain comprises a curtain body and an upper beam; an auto slide-stop installed within the upper beam for controlling the curtain body to a predetermined position; and a control rope set having a first end and a second end which are at opposite... | 03/28/2006 |
| 7002310 | Piezo-based encoder with magnetic brake for powered window covering The position and speed and, in some embodiments, direction of rotation of a motor for turning the rod of an object such as a window covering is determined by placing a braking magnet next to the motor and a piezoelectric element between the braking magnet and motor.... | 02/21/2006 |
| 6978822 | Device for rolling up/rolling down a shade Assembly composed of a number of devices for rolling up/rolling down shading. On a side higher up, the said shading is immovably fastened to a frame and is wound onto or unwound from a tube from the bottom. Rotation of the tube is achieved by via a transmission devi... | 12/27/2005 |
| 6967418 | Magnetic brake for powered window covering Two braking magnets are attached to the housing of a motor of a motorized component such as a window covering, with one magnet north face down and the other magnet south face down. With this structure the motor is braked from turning under the weight of the window c... | 11/22/2005 |
| 6942004 | Partition mount In a spring-loaded curtain mount, the mount includes a pole interface at a proximal end, a compressive mechanism, and a head at a distal end. The pole interface is adapted to receive the end of a standard length adjustable pole or a painter's pole. The compression m... | 09/13/2005 |
| 6928784 | Beam assembly in a tarpaulin handling machine A tarpaulin can be connected by clamp devices to a beam assembly for transfer of the beam through a tarpaulin handling machine. The beam assembly has a number of parallel, through beam rods and on each beam rod a number of beam tubes, which are alternatingly rigidly... | 08/16/2005 |
| 6924615 | Magnetic encoder for powered window covering A motor for turning the rod of an object such as a window covering is attached to an elongated ferromagnetic bar. Magnets are closely spaced from the bar, and as the bar rotates to cut the magnetic field lines, pickup coils generate signals that can be used to deter... | 08/02/2005 |
| 6860312 | Roll-up shade with cord capture A roll-up shade with cord capture has a headrail, a bottomrail, a panel of window covering material between the headrail and the bottomrail and a plurality of looped cords extending from the headrail down one side of the panel of window covering material, around the... | 03/01/2005 |
| 6845803 | Cord member safety connector for window blind A connector for connecting a cord member of a window blind includes a supporting member and a coupling member detachably coupled to the supporting member. The supporting member has a receiving space and an escape opening that is communicated with the receiving space... | 01/25/2005 |
| 6644379 | Adjustable upper beam with a cuttable blind assembly The adjustable upper beam with a cuttable blind assembly is mainly made up of a blind, a movable upper beam having a telescopic inner tube and outer tube, two retaining clamps, a pull cord wherein the upper side of the blind is held in place by the upward... | 11/11/2003 |
| 6644610 | Bracket for sun shade and assembly using it A bracket can be attached to a vertical wall so that it extends out from said wall. The bracket can hold a fixed rod to which is attached a shade. A second rod can be attached to the bottom of the shade. Cords pass over the bottom of the shade and through... | 11/11/2003 |
| 6612359 | Slider curtain arrangement for controlling ventilation of a livestock barn A slider ventilation curtain for an agricultural building has upper and lower curtains, with the lower curtain having an upper hem pipe that is mounted in a fixed location on the wall of the building, and an upper curtain that slides past the lower curtai... | 09/02/2003 |
| 6585026 | Safety device for window curtains A safety device for window curtains comprising a stopper safety hanger, a single wheel safety hanger and several safety clamps. When an object is caught by the curtain string, a small copper ball of the stopper safety hanger goes sideways from a copper wh... | 07/01/2003 |
| 6446696 | Retractable screen system A retractable screen is located within a frame portion of a window. The screen accumulates on and pays out from a spring biased roller located in said frame portion. The screen is fully retractable and for the most part hidden for viewing, egress or clean... | 09/10/2002 |
