Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7413616 | Active rinse shield for electrofill chemical bath and method of use An active rinse shield designed to protect electrofill chemical baths from excessive dilution during rinse sprays on the semiconductor wafer. The shield uses overlapping blades to cover the bath, making a physical barrier between the bath chemistry and the wafer rin... | 08/19/2008 |
| 7118472 | Control system for pneumatically-powered door installation A mine door installation has a frame installed in a mine passageway. At least one door leaf is mounted on the frame for swinging movement between open and closed positions. Movement of the door leaf is powered by a pneumatic actuator. A pneumatically-powered control... | 10/10/2006 |
| 7104008 | Door system with a pair of door panels connected by a swivel panel that swings back and forth for selectively opening and closing gateways in a compartment A door system has a compartment formed with a first gateway and a second gateway opposed to the first gateway, and a barrier apparatus housed in the compartment. The barrier apparatus includes a swivel panel which swings back and forth between a first position where... | 09/12/2006 |
| 7052390 | Revolving door A revolving door for installation in a building, comprising a cylindrical shell wall, within the shell wall door leaves rotating about a central shaft and between a bottom plate and a top plate, and entrance and exit openings provided in the shell wall, at least one... | 05/30/2006 |
| 7048312 | Safety mechanism for walk-in interiors, particularly for cooking devices A walk-in chamber has a door opening closable by a door, which, when in the closed position can be either in a locked position or an unlocked position, dependent on the locking device, which includes a sliding bolt engageable with a locking bolt. To enable a person ... | 05/23/2006 |
| 7042492 | Automatic door assembly with video imaging device An automatic door assembly for installation at a doorway formed through a wall of a building and for use in conjunction with a video device that is (a) capable of receiving a video data signal from a video imaging device monitoring a field of view and (b) processing... | 05/09/2006 |
| 6976269 | Internet co-location facility security system An Internet co-location facility security system integrates all the major components of the system and makes tracking information from these components available to co-located members on a database accessible from the web. A web-based interface allows co-located mem... | 12/13/2005 |
| 6971029 | Multi-ringed internet co-location facility security system and method An Internet co-location facility security system and method integrates all the major components of the system and makes tracking information from these components available to co-located members on a database accessible from the web. A web-based interface allows co-... | 11/29/2005 |
| 6959456 | Apparatus and method for putting on a protective suit A protection suit, particularly a spacesuit, has an opening in a back portion of the spacesuit for entering and exiting the suit. The spacesuit is suspended on one side of a bulkhead (5′) so that a hole in the bulkhead is aligned with the opening in the bac... | 11/01/2005 |
| 6888460 | Advertising trays for security screening A system and device for use in a security area, and more particularly, a rack system and holding device for placing various objects that are processed through a security area are taught. ... | 05/03/2005 |
| 6779581 | Secondary physical/visual barrier A physical barrier system for barring entry for a vehicle having a clearance height through a door opening having a roll-up door has a physical barrier positionable in a first position visible to a driver of the vehicle and at least partially barring passage by the ... | 08/24/2004 |
| 6745520 | Integrated rapid access entry/egress system An integrated rapid access entry/egress apparatus, system, and method for controlling and directing the movement of people or objects between unsecured and secured areas using a plurality of panels is provided. Sensors detect a person's approach and entrance into th... | 06/08/2004 |
| 6724304 | Security entrance system A security entrance system for controlling access from an infeed area (98) to a protected area (100) has a structure (24) defining a chamber disposed between the infeed area, the protected area and a temporary containment area (201), with... | 04/20/2004 |
| 6718692 | Safety hatch for preventing fall-through and unauthorized entry An access hatch having a frame containing an access opening, a grate, and a pull member pivotally coupled to the grate. The pull member has a proximal end and a distal end. The distal end is pivotally coupled to the grate near the far side of the grate, such that th... | 04/13/2004 |
| 6640495 | Safety hatch for preventing fall-through and unauthorized entry An access hatch comprises a frame, a grate, and a pull member pivotally coupled to the grate. The frame contains an access opening. The grate has a near side and a far side. The near side is coupled to the frame for pivotal movement of the grate between a... | 11/04/2003 |
| 6552262 | Cover assembly with pivoting access doors An access cover for a receptacle fitting includes a cover plate connectable to the fitting at a location overlying a receptacle carried by the fitting. An access door includes a first portion slidably connected to the cover plate for movement between open... | 04/22/2003 |
| 6472984 | Security entrance system A security entrance system for controlling access from an infeed area (98) to a protected area (100) has a structure (24) defining a chamber disposed between the infeed area and the protected area, with first doors (38) at the infeed end of the chamber an... | 10/29/2002 |
| 6470949 | Closing system for refrigerating chambers This system is comprised of an insulated access door (6), which makes for the closure of the cold room (4) in coming into contact with the door frame (1) fixed onto the entrance (2) of said cold room (4), and a quick opening door made up of a moveable she... | 10/29/2002 |
| 6308644 | Fail-safe access control chamber security system An access control vestibule having first and second locking single doors, an access control chamber formed between the two doors, magnetic locks for each of the doors, a metal detector located between the doors to detect for a weapon, the doors are manual... | 10/30/2001 |
| 6298603 | Access control vestibule An access control chamber security system with a security chamber having an aluminum frame and an entrance door and an exit door, a metal detector located within the access control chamber to detect a weapon being carried within the chamber, locks on the ... | 10/09/2001 |
| 6269591 | Adjustable threshold protective cover with removable sections An adjustable threshold protector to be used during the construction of a house or building is an apparatus made of durable material covering the threshold, removably attached to the threshold and which can be adjusted in width and length by removable sec... | 08/07/2001 |
| 6158942 | Tape cartridge access port A tape cartridge access port includes frames defining a series of tape cartridge magazine cavities for directly loading magazines filled with tape cartridges with the labels on the front surfaces of the tape cartridges oriented towards the robotics of an ... | 12/12/2000 |
| 6076303 | Filtering gate for the protection of a site, with linear parallel motion of the leaves of the doors A filtering gate for the protection of a site includes two boxes arranged side by side and forming two corridors allowing communication between an inside of the site and an exterior of the site. A first and a second pair of leaves are located at an inside... | 06/20/2000 |
| 5921191 | Pass through interlock system Pass through interlock systems for sanitized environments or "clean rooms" are disclosed which allow for the transfer of objects from outside the sanitized environment without introducing undesirable contaminants therein. The system comprises a frame, box... | 07/13/1999 |
| 5878529 | Entrance device An entrance device for placement in a facade of a building includes at least two revolving doors. Each of the revolving doors has an input section and an output section. A sliding door provides closure of the input and output sections of the two revolving... | 03/09/1999 |
| 5845692 | Rapid access portal A rapid access door system is provided wherein authorized individuals may pass through the door system and wherein unauthorized individuals are blocked from entering a secured area past the doors and are automatically rerouted to an unsecured area for fur... | 12/08/1998 |
| 5815983 | Driveway gate system A motor-vehicle gate assembly for a driveway includes, in addition to the gate and an actuator for opening and closing the gate, a secondary barrier operable in response to operation of the gate to prevent motor-vehicle access to the gate when the latter ... | 10/06/1998 |
| 5802993 | Pyrolysis system and method Pyrolysis system and method wherein used batteries other than lead-acid batteries for reclamation and recovery of the constituents therein or environmentally safe disposal are placed in rail carts and moved on rails through an entry zone into a central he... | 09/08/1998 |
| 5769011 | Transaction security system A transaction security system is disclosed which provides protection and security for transaction customers while conducting their business, such as those visiting a remote bank automatic teller machine. The enclosure can accommodate either or both vehicu... | 06/23/1998 |
| 5717731 | Outage cover for nuclear reactor containment vessel A circular outage cover of light-weight composite material is normally situated in a standby position adjacent to the opening at the outer end of the equipment access tunnel of a nuclear reactor containment vessel. In case of an emergency during an outage... | 02/10/1998 |
| 5694867 | Fail-safe access control chamber security system A fail-safe access control chamber security system (ACCSS) including a bullet-proof access control unit (ACU) having an entrance chamber and an exit chamber. The entrance chamber includes a first interlocking door providing passage from a non-secure area ... | 12/09/1997 |
| 5469657 | Security-transfer systems A security system controls two sliding (or other) doors 6 and 7 to allow only one door to be opened at a time. A pivoted bolt 13 is pushed by a mechanical link 16 into the opening-path of the door 6 when a lever 15 that abuts the leading-edge of the other... | 11/28/1995 |
| 4894489 | Electromagnetic shield-type doorway for buildings and electromagnetic shielding system therefor An electromagnetic shield-type doorway for a building is provided with two doors having a curved passageway between them. By lengthening the passageway to such an extent that the two doors cannot be opened simultaneously, electric waves can be blocked at ... | 01/16/1990 |
| 4815757 | Rapid development surveillance vehicle and method A rapid deployment surveillance vehicle is disclosed for detecting illegal immigration across national borders and the like. An off-the-road vehicle (V) is equipped with a rapid mast erection/retraction assembly (A) which includes a carriage mechanism (24... | 03/28/1989 |
| 4718205 | Dwelling construction A housing construction comprising a first unit enclosing at least a kitchen, living/dining/bath and sleeping zones, a second unit enclosing at least a kitchen, storage, and laundry facilities with high heat, noise and or pollutant producing characteristic... | 01/12/1988 |
| 4669413 | Transfer chamber and method of operating same An improved transfer chamber for a space vehicle has an enclosure mounted on the hull of a spacecraft, and is provided with inner and outer doors. Two bladders are placed within this transfer chamber, and are selectively movable toward and away from one a... | 06/02/1987 |
| 4604111 | Particulate contamination control method and filtration device A negative pressure method and apparatus for protection from airborne asbestos and other particulate contamination is disclosed, including an enclosure with doorways and decontamination chambers with an air intake through the decontamination chambers with... | 08/05/1986 |
| 4598495 | Security enclosure for a door frame A security enclosure for use with an existing door frame which is within a wall having first and second sides and extending upwardly from a base. A first door is hingedly connected to the door frame and includes a second portion which is capable of latchi... | 07/08/1986 |
| 4551944 | Door control apparatus Door control apparatus is provided for opening and closing the passenger doors of a transit vehicle and the cooperating doors of a station, which apparatus includes conductors respectively coupled with a station power supply and the station door motors an... | 11/12/1985 |
| 4481887 | Security doors A security door and system for installation as the entrance and exit to a building or office to automatically control the passage of persons therethrough and to trap certain persons therein comprising a vestibule having side walls and oppositely disposed ... | 11/13/1984 |
