Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7574827 | Louver blade positioning device of motorized shutter assembly A louver blade positioning device of a motorized shutter assembly includes an indented positioning portion or a protruded portion formed upon a driving shaft and a resilient member coming into contact with the driving shaft and the indented positioning portion or th... | 08/18/2009 |
| 7131241 | Corrosion resistant window shutter A window shutter has corrosion resistant stiles with a non-metallic core and louvers, and non-metallic top and bottom rails. The shutter is resistant to the adverse effects of sunlight, humidity, rain and wind, and will retard flying objects, and will pass commonly ... | 11/07/2006 |
| 7124537 | Decorative shutter with hidden louver control A shutter includes a frame with frame members that are spaced apart from one another, and a series of louvers are respectively rotatably mounted to the frame members. At least one of the frame members includes a casing defining a cavity. A controller, which preferab... | 10/24/2006 |
| 6968660 | Shutter assembly A shutter assembly comprising a frame assembly including spaced apart peripheral base segments connected to a plurality of mounting members, wherein the base segments are secured to a supporting structure. A plurality of slats, each including a passageway for receiv... | 11/29/2005 |
| 6951236 | Retention system for pivotally connected shutter slats A plurality of elongated shutter slats of extruded rigid plastics material have co-extruded cores of rigid plastics foam material, and injection molded plastic end caps are attached to opposite ends of each slat. The end caps have elongated flat base portions and re... | 10/04/2005 |
| 6865847 | Shutter louver brake A louver braking mechanism for use in shutters, used to hold the louvers in place against the moment arm resulting from the weight of the tilt bar urging the louvers to close. The disclosed mechanisms provide a frictional resistance to the louver pivotal movement, w... | 03/15/2005 |
| 6810621 | Friction brake for louvered structures A friction brake for a louvered structure having a plurality of slats pivotally interconnected between opposed stiles of a rectangular frame is described. The friction brake is a flat arm having a pair of spaced apertures. One of the apertures is dimensioned to rece... | 11/02/2004 |
| 6810620 | Adjustable height shutter A shutter design is provided that permits easy, economical adjustments in height. This may be achieved by providing varying heights of rails, by providing adjustable light stop strips, by adjusting the pitch of the louvers, or by a combination of two or more of thes... | 11/02/2004 |
| 6250012 | Louver assembly with multi-position louver adjusting control rod having clamping connecting arms A louver assembly is comprised of two or more louvers, each of the louvers having pivot connections at opposed ends thereof, with the pivot connections pivotally securing the louvers between opposed stiles of a shutter frame for pivoting motion of the lou... | 06/26/2001 |
| 6131336 | Ventilator device having a control which operates a lamella unit and an air damper simultaneously An apparatus for controlling the flow of air in an air duct structure includes a lamella unit in the air duct structure moveable between a plurality of positions for controlling the flow of air in the air duct structure. A rocking lever having a groove is... | 10/17/2000 |
| 5983971 | Reinforced burglar- and storm-resistant cover for windows and doors A burglar- and weather-resistant cover for an opening such as a door or window. The cover includes a pair of opposed and generally parallel tracks with an upper housing extending therebetween. A plurality of louvers are generally parallel and connected to... | 11/16/1999 |
| 5755060 | Compact panel lock for an overhead mounted door panel operator A compact mechanical lock for bi-parting handles of passenger doors used on mass transit vehicles. Rotating lock cams cooperating with an interlocking lock plate to ensure proper closure of each panel prior to lock actuation.... | 05/26/1998 |
| 5461828 | Awing window with lock The invention herein provides a key operated locking device for utilization with an awning window. The locking device allows the building occupant to fix the rotatable panels in an open posture to assist in preventing vandals and burglars from entering th... | 10/31/1995 |
| 5282514 | Window guard for venetian blind hung windows A window guard for a venetian blind hung window consisting of oppositely disposed sleeves, the sleeves being adapted to be affixed to opposite ends of a window frame, each sleeve containing a rotator extending substantially the length of the sleeve to for... | 02/01/1994 |
| 5188161 | Louverable rolling shutter A louverable rolling shutter with a number of louverable, leaf-like shutter slats (1) articulated at their upper zones to pull chain links (2) and at their lower zones to adjusting chain links (5), and also being guided in fixed guide profiles (4) lateral... | 02/23/1993 |
| 4974362 | Decorative shutter A window shutter having pivoting louvers mounted in a rectangular shutter frame and linked together for common pivotal movement by a ganging bar mounted adjacent the ends of the louvers. The bar has pins extending into the end of each louver spaced from t... | 12/04/1990 |
| 4926599 | Adjustable louvered awning An adjustable, louvered awning incorporating a combination angle adjustment and locking mechanism. The mechanism enables the awning's movable vanes to be securely locked in a plurality of positions selected by the operator.... | 05/22/1990 |
| 4887391 | Window shutter assembly and method of production A window shutter having pivoting louvers mounted in a rectangular shutter frame and linked together for common pivotal movement by a ganging bar mounted adjacent the ends of the louvers. The bar has pins extending into the end of each louver spaced from t... | 12/19/1989 |
| 4860492 | Louvered blind structure, more particularly for double-glazed sealed window unit A louvered blind structure comprising a support frame, one side of which is straight and the other side not parallel to the straight side. A plurality of elongated slats are pivotally connected to the straight side at one end, and at their other end to bl... | 08/29/1989 |
| 4855716 | Security awning window A security awning window is presented with increased safety factors which grant protection against both adverse weather conditions and unauthorized entry. Alarm struts span the window which, if deflected act as a switch for an audible alarm and also engag... | 08/08/1989 |
| 4709506 | Swivel shutter assembly A swivel shutter assembly providing a plurality of louvers rotationally held within a framework which presents, by ship-lap type of construction between adjacent louvers, a flat wall type appearance when the louvers are fully closed. In addition, the swiv... | 12/01/1987 |
| 4527355 | Opening and closing type louver device An opening and closing type louver device comprising a louver in which a number of blades are arranged in a row in a required spaced relation on rotating shafts within a frame. Each blade is opened and closed by a driving mechanism while maintaining their... | 07/09/1985 |
| 4485589 | Controllable detention window A window assembly for controlling light and ventilation and preventing undesired passage through the window opening has spaced horizontal fixed slats, spaced horizontal movable slats which may be moved vertically to partially or wholly close the spaces be... | 12/04/1984 |
| 4373568 | Reducible volume sun-blind Disclosed herein is a reducible volume sun-blind with which, thanks to its simple yet functional means of adjustment, it is possible to constantly regulate the extent to which direct luminous radiation can pass therethrough. The support frame of the sun-b... | 02/15/1983 |
| 4192098 | Air damper apparatus particularly for heating, ventilating and air conditioning systems A multiple bladed air damper unit for heating, ventilating and air conditioning systems includes separate and individual end edge seal elements sealing off the end edges to the frame in the closed position. The seal elements are mounted in end-to-end rela... | 03/11/1980 |
| 4160343 | Window shutter and mounting therefor There is disclosed a heat insulating window shutter arrangement comprising a plurality of slats of organic polymeric foam material. The slats comprise configured side edges to mate substantially flush with complimentarily configured slats. The shutter mou... | 07/10/1979 |
| 4099346 | Adjustably louvered roof plate assembly This invention provides a roof in which plurality of louver-type roof plates are designed to be opened and closed by means of a reciprocating connecting rod pivoted to cranks secured to said roof plates. A ratchet gear mechanism is mounted to connect with... | 07/11/1978 |
| 4093286 | Security locking device for louvre and jalousie windows A series of bracs sized to fit louvre and jalousie glass panes when fitted with a latching unit provides an excellent security or locking device for windows.... | 06/06/1978 |
| 4038781 | Jamb seal A louver assembly has a plurality of louver blades and pivot shafts pivotally supported for adjustable movement between open and closed position in a frame which includes two opposed vertical side frame members. A jamb seal between each side frame member ... | 08/02/1977 |
