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| Number | Title | Issue Date |
| 7415806 | Ballistic abatement barrier method and system A modular ballistic abatement barrier system (10) includes a first corrugated panel (12) having at least one aperture (13), a second corrugated panel (16) having at least one aperture (17), and a ballistic cloth (14) placed ... | 08/26/2008 |
| 7127858 | Interior wall and partition construction An improved interior wall construction that provides both sound attenuating and fire resistant properties. The improved wall construction eliminates the need for conventional vertical studs by including at least one rigid interior structural panel comprised of compr... | 10/31/2006 |
| 7032356 | Interior wall and partition construction An improved interior wall construction that provides both sound attenuating and fire resistant properties. The improved wall construction eliminates the need for conventional vertical studs by including at least one rigid interior structural panel comprised of compr... | 04/25/2006 |
| 7000550 | Ablative blast resistant security door panel Penetration resistant door panel comprises a plurality of spars having a series of holes therethrough and sandwiched between an outer skin and a rear skin. Preferably there are two series of holes in each spar that are staggered with respect to each other. The holes... | 02/21/2006 |
| 6959519 | Corrugated polymeric zigzag sheet for greenhouse roof structures A sheet structure includes a pair of corrugated sheets formed in a zigzag pattern, the pair comprising an upper sheet and a lower sheet. In an exemplary embodiment, each of the pair of corrugated sheets further includes a flat portion disposed at selected intervals ... | 11/01/2005 |
| 6748711 | Door for a housing containing electrical components A door for a housing containing electrical components, in particular a switchgear cabinet, having a door frame, which has two vertical profiled frame sections spaced parallel apart from each other and connected at their longitudinal ends by horizontal transverse sta... | 06/15/2004 |
| 6482496 | Foil backed laminate reinforcement A reinforced wall comprises a stiff substrate having a reinforcing laminate bonded to its inner surface. The reinforcing laminate includes an outer foil support and an expandable polymer foam material bonded to the foil support or backing. The polymer foa... | 11/19/2002 |
| 6470639 | Exterior window shutters The present invention relates to solid panel window shutters having both high strength and structural stability. More particularly, an exterior window shutter made of a solid panel of polyvinyl chloride with at least one support member affixed in the pane... | 10/29/2002 |
| 6170224 | Multi-panel hollow door structures and manufacturing methods employing paperboard cores A multi-panel hollow door has a core made of corrugated paperboard. The core is formed from a stack of plies in which adjacent plies are adhered to one another in accordance with a predetermined pattern of adherence (e.g., a gluing pattern). The stack is ... | 01/09/2001 |
| 5996292 | Perforated shutter system and method Disclosed is a shutter system and its panels in which at least one panel is formed of corrugations, and in which the subject panel is perforated. Ideally, the perforation is employed in a panel having an isosceles trapezoidal rib, with the perforations ru... | 12/07/1999 |
| 5989681 | Semi-finished wood simulating product A semi-finished wood simulating product and method is disclosed. The product is manufactured by providing a substrate having at least one surface to be finished. A liquid basecoat is applied on the substrate and dried. A wood grain pattern is deposited, i... | 11/23/1999 |
| 5983578 | Penetration-resistant security passway and door therefor A penetration-resistant modular security passway (20) includes a concrete vestibule (24), a doorframe (70), and a penetration-reactive security door (32). The vestibule (24) has a plurality of reinforcing members (36), a plurality of lifting lugs (26), an... | 11/16/1999 |
| 5782055 | Door Apparatus and method of making door Door apparatus includes a perimeter frame and material inwardly from the perimeter frame has been removed from both sides of the door asymmetrically to allow the inner portion of the door to warp in response to temperature and/or humidity conditions witho... | 07/21/1998 |
| 5681641 | Structural member and pallet made therewith and method A structural member formed from a billet, each member comprising a plurality of corrugated paperboard sheets bonded together with an adhesive and disposed between a core fiber layer, each core fiber layer comprising at least one ply of a fiberboard sheet,... | 10/28/1997 |
| 5660021 | Security of buildings and other structures An improved security door is provided that is a composite of multiple layers. The layers include a first hard layer, a second hard layer, a reinforcing layer disposed between and connecting the first and second hard layers, and a carbonizing layer provide... | 08/26/1997 |
| 5596849 | Shutter system and method A shutter system and method in which the shutters are normally rolled to a nominal one foot width and have an infinite length, normally no less than two feet and no more than twelve feet is disclosed. These dimensions can be modified on one foot modules. ... | 01/28/1997 |
| 5487244 | Shutter system and method A shutter system and method in which the shutters are normally rolled to a nominal one foot width and have an infinite length, normally no less than two feet and no more than twelve feet is disclosed. These dimensions can be modified on one foot modules. ... | 01/30/1996 |
| 4838606 | Door guard bar A vehicle door guard bar is formed out of a single plate and comprises an elongated main body portion having one side and an opposite side, a bent portion, and a reinforcement portion joined to the main body portion at the one side thereof via the bent po... | 06/13/1989 |
| 4494354 | Door frame construction A door frame is fabricated of rolled sheet metal vertical frame pieces each including a first channel for receiving the end portions of wood or metal horizontal crosspieces and a second channel for receiving the end portions of corrugated or other panel m... | 01/22/1985 |
| 4284119 | Overhead door and overhead door section system and method A novel overhead door section system and method, the section including a section facing fabricated from a high tensile steel and secured to a novel end stile and center stile. The end stile includes an angle support secured therein. The angle support clam... | 08/18/1981 |
| 4182080 | Sectionalized door for a barn or similar structure A sectionalized door for a barn or similar structure including a plurality of separable panels positioned side by side and fitted together by tongue and groove connections. Top and bottom rails extend across the upper and lower marginal edges respectively... | 01/08/1980 |
| 4132042 | Door structure and method for forming such structure An improved door structure and the method for forming such structure is disclosed. Individual rectangular door panels are formed from glass fiber reinforced plastic with a lip along at least one exterior edge for abutting a surface against which the door ... | 01/02/1979 |
| 4057936 | Thermally insulated window system A thermally insulated window system for use in windows and doors which provides a thermally insulated frame and means for completely insulating the area of the frame. Novel panel sections are used to form the frame, as well as vents for a portion of the f... | 11/15/1977 |
