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 |
| 7442949 | Portable nuclear radioactive fallout shelter and preservation of potable water storage system The Portable Nuclear Radioactive Fallout Protection Shelter & Preservation of Potable Water Storage System is comprised of self-supporting interlocking stackable radiation shielding watertight jugs having the dual purpose of being used to rapidly assemble fallout sh... | 10/28/2008 |
| 7308847 | Perforating gun loading bay and method A perforating gun loading bay is described for protecting adjacent areas from an accidental explosion during gun loading. The bay can be an insert-type arrangement or a stand-alone structure. The bay includes metal plate walls, a floor and a roof. ... | 12/18/2007 |
| 7100488 | Structure and method for containing the detonation of an explosive A modular containment structure kit comprises (i) a plurality of elongate members, (ii) a plurality of rectangular, planar side wall members, (iii) a plurality of rectangular, planar roof members, (iv) a plurality of rectangular, planar metal plates, and (v) a plura... | 09/05/2006 |
| 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 |
| 6971207 | Explosion-resistant wall construction A wall construction with increased resistance to overpressure, such as over-pressure as a consequence of explosions, comprises an essentially flat panel with a wall panel that is welded to adjoining structural components. The adjoining structural components are prov... | 12/06/2005 |
| 6938381 | Catastrophic event survival structure and method of manufacture A catastrophic event survival structure and method of manufacture such that the catastrophic event survival structure includes a monolithic outer shell formed from a single pour of concrete and enclosing a confined inner space therein. The monolithic outer shell of ... | 09/06/2005 |
| 6910230 | Submergible public sanitary device A public sanitary device, comprising one or more walk-in positions, each having a receptacle for human excrement and/or urine, which is connected to a waste pipe for connection to a sewage system. The sanitary device has the characteristic that it is provided with m... | 06/28/2005 |
| 6415557 | Protective shelter A protective shelter that is made from a plurality of elongate, vertical C-shaped panels that have web portions and perpendicular side portions, and are butt connected together with fasteners that are located in a section of the side portions that are clo... | 07/09/2002 |
| 6412231 | Blast shelter A blast shelter for protecting individuals during a blast or a natural disaster. The blast shelter includes an outer perimeter wall and an inner perimeter wall. The inner perimeter wall is positioned generally adjacent to the outer perimeter wall. A plura... | 07/02/2002 |
| 6393776 | Tornado shelter with composite structure and concrete tub encasement A protective shelter for installation above and in the ground including a superstructure style frame, a composite wall structure for absorbing energy from missile impacts, and a tub encased in a foundation. The invention also discloses a method for constr... | 05/28/2002 |
| 6385919 | Disaster shelter A disaster shelter for mounting under ground. The shelter includes an entranceway having at least one air vent and a substantially hollow paraboloid shaped shelter cell. The shelter cell includes a paraboloid focus portion attached to the entranceway and ... | 05/14/2002 |
| 6334278 | Tornado safe room A relocateable shelter for protecting individuals from dangerous conditions such as Tornadoes and the like, that can withstand winds of approximately 450 mph. The shelter can be attached and detached from a concrete foundation. A rectangular frame that is... | 01/01/2002 |
| 6328775 | Protection system against the penetration of contaminated air and blast waves into a protective space The invention provides a compact, portable system for protection against the penetration of contaminated air into a protected space. The system includes a gas filter and an air-intake unit. There is also a blower for sucking air through the filter into th... | 12/11/2001 |
| 6151841 | Prefabricated portable tornado shelter An inexpensive, prefabricated portable tornado shelter is disclosed. The shelter is assembled from four equilateral triangular sides, a base frame, and a floor, to form a square pyramid-shaped enclosure with latched doors and PLEXIGLAS windows. The shelte... | 11/28/2000 |
| 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 |
| 5732510 | Personnel protective action system An enclosure for housing people in the event of a serious air quality degradation is provided. A pressurized enclosure, either permanent or temporary, includes an air supply system for filtering and subsequently supplying clean air to the interior of the ... | 03/31/1998 |
| 5611178 | Device forming an underground shelter for the protection of persons and method for making same An underground shelter for the protection of at least one person, comprising two substantially identical rigid panels which may be assembled together into a tunnel configuration and disassembled by distinct mechanical means arranged so as to permit a join... | 03/18/1997 |
| 5206451 | Armor-protection for a wall, for example a bombshelter or an armored vehicle A wall of, for example, a bombshelter or armored vehicle, is provided with an inner and outer armor spaced from each other. This armor protection is designed to provide a deflection, respectively destruction of an impacting projectile as soon as the proje... | 04/27/1993 |
| 5187316 | Passive explosion protection device This invention relates to a passive explosion protection device wherein a quick acting gate valve is designed in combination with means for directing and reflecting incumbent pressure surges to reduce or decelerate the surges prior to contact with the gat... | 02/16/1993 |
| 5115613 | Theta blast cell An underground blast shelter providing short and long term protection against nuclear detonation for its occupants. The shelter consists of a paraboloidal cell to house the occupants and a command station interfacing with the ground surface. A flange comp... | 05/26/1992 |
| 5007244 | Disaster prevention system and construction for an underground space A disaster prevention system for underground spaces has a compressed air supply system and an independent power generator installed in an underground space. In the event of a disaster, the compressed air supply system discharges compressed air into an und... | 04/16/1991 |
| 4893569 | Safety wall and a safety cage for tire inflation In connection with the inflation of pneumatic vehicle tires the risk exists that the tire explodes and that the nearby operator or other nearby persons are slung away and severely injured by the pressure wave of the exploding tire. The invention provides ... | 01/16/1990 |
| 4873810 | Elements having a multi-directional cellular structure whose inertia may vary, and methods of manufacture The invention relates to the construction of a self-supporting body of cellular structure, great rigidity, and capable of withstanding stresses exerting in all directions, either separately or together, of withstanding impacts, pressure, shock waves, acou... | 10/17/1989 |
| 4776138 | Buried vault for underground optical fiber systems A buried vault for telecommunication equipment is disclosed. It is adapted to connect with telecommunication conduits, especially optical fiber conduits enclosing optical fibers. The vault encloses laser light generating devices for providing signals and ... | 10/11/1988 |
| 4729326 | Walk-in shelter A walk-in shelter providing protection against undesired heat, radiation, gas and water action, as well as mechanical stressing, particularly for data carriers is proposed, in which the walls comprise several different layers. The inner and outer layers a... | 03/08/1988 |
| 4686804 | Prefabricated panelized nuclear-hardened shelter A shelter 20 to enable occupants thereof to survive a near-strike nuclear detonation as well as chemical, biological and conventional weapons attacks can be assembled by four men in thirty minutes. Panels 38 are lightweight laminates of plastics and reinf... | 08/18/1987 |
| 4686911 | Blast suppression device A blast supression device for use in explosive hardening in a relatively confined enclosed area. The device absorbs and dissipates the explosive force by utilizing a containment frame covered with overlapping multiple flexible resilient flaps that dissipa... | 08/18/1987 |
| 4683691 | Protective annular construction and method of manufacture A protective annular construction for protecting surface or subsurface facilities against shock. In one embodiment, the invention utilizes concentric slip formed concrete cylinders, at least partially embedded in the soil as a sacrificial construction to ... | 08/04/1987 |
| 4662287 | Tanker safety system A safety system, particularly for use with fire fighting tankers, comprising a device whereby at least part of the contents of the tank can be caused to be rapidly discharged and having a hatch for the ingress into the tank of at least one person, the hat... | 05/05/1987 |
| 4660334 | Theta blast cell An underground blast shelter for providing short and long term protection against nuclear detonations for its occupants. The shelter consists of a cell to house the occupants and a command station interfacing with the ground surface. The cell and command ... | 04/28/1987 |
| 4646659 | Radiation shielding door A radiation shielding door of massive concrete mounted to move parallel to a wall surface adjacent a door opening, while supported on a plurality of roller assemblies which travel along a rail mounted in the floor.... | 03/03/1987 |
| 4642952 | A-shelter A nuclear bomb shelter of small dimensions, buildable at low-cost and of very easily installable prefabricated structural elements, comprising an outer protective wall of cupola shape, an optional second inner wall, concentric to the first wall, and bound... | 02/17/1987 |
| 4631872 | Nuclear blast and fall-out shelter The invention provides a nuclear blast and fall-out shelter to contain a number of persons completely enclosed for several weeks and is provided with oxygen supply means, air conditioning means, and hand operated pump for introducing external air if requi... | 12/30/1986 |
| 4632041 | Blasting chamber This invention relates to a blasting chamber; i.e. a cylindrical container or chamber (1, 2) which can contain high pressure and splinters produced by an explosion. The blasting chamber according to the invention is characterized of its low weight, which ... | 12/30/1986 |
| 4628826 | Walk-in shelter A walk-in shelter providing protection against undesired heat, radiation, gas and water action, as well as mechanical stressing, particularly for data carriers is proposed, in which the walls comprise several different layers. The inner and outer layers a... | 12/16/1986 |
| 4625468 | Temporary/portable nuclear fallout shelter Significant, life-saving protection from airborne, radioactive (fallout) particles due to nuclear explosions, nuclear reactor accidents, and other releases of radioactive particulate is provided by a double-wall tent structure quickly erectable over a cen... | 12/02/1986 |
| 4621559 | Detonation chamber The present invention relates to a readily replaceable liner for a detonation chamber (1) intended to protect the inside of the chamber from damage when the detonation chamber is used for test firings of fragment-producing charges. The liner consists of a... | 11/11/1986 |
| 4615158 | Mobile home tornado shelter A tornado shelter, specially adapted for use with mobile home lots. The shelter is an underground enclosure defined by an annular sidewall and a top and bottom. The top of the enclosure has an entrance and egress passageway in communication with both the ... | 10/07/1986 |
| 4573396 | Nuclear blast hardened mobile vehicle A mobile vehicle having a high degree of survivability against a nearby nuclear blast. The vehicle includes a chasis on which wheels or the like are mounted for movement along the earth's surface and a protective shell covering the vehicle. A skirt extend... | 03/04/1986 |
| 4566237 | Armored panel An armored panel construction for a shelter to defeat ballistic fragment and thermal radiation threats comprises an inner structural panel of aluminum alloy sheets bonded to a honeycomb core and an outer face panel of an aramid fiber fabric in a multi-ply... | 01/28/1986 |
