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 |
| 8171866 | Safe construction for swing and slide door A safe of the swing and slide type has a closing stile which has a landing surface for the safe door and a pocket for housing the closing edge of the door. That edge is outwardly turned to prevent the insertion of a pry bar between the door and the hook of the closi... | 05/08/2012 |
| 7793600 | Security door and frame construction This security door construction is applicable to safes, factory doors and house doors. An offset hinge assembly allows the door to swing open and closed and also to slide in and out of a door slot in the door frame at the closing edge of the door. In the constructio... | 09/14/2010 |
| 7516709 | Safe A safe having a support assembly disposed in the interior of the safe. The door of the safe is coupled to the support assembly and is shiftable between a closed position wherein the door is received in an opening of the safe and an open position wherein the door is ... | 04/14/2009 |
| 7404363 | Security door and frame construction This security door construction is applicable to safes, factory doors and house doors. An offset hinge assembly allows the door to swing open and closed and also to slide in and out of a door slot in the door frame at the closing edge of the door. In the constructio... | 07/29/2008 |
| 7096801 | Safe A safe having a support assembly disposed in the interior of the safe. The door of the safe is coupled to the support assembly and is shiftable between a closed position wherein the door is received in an opening of the safe and an open position wherein the door is ... | 08/29/2006 |
| 6865993 | Safe A safe having a support assembly disposed in the interior of the safe. The door of the safe is coupled to the support assembly and is shiftable between a closed position wherein the door is received in an opening of the safe and an open position wherein the door is ... | 03/15/2005 |
| 6725603 | Emergency exit revolving door An emergency exit revolving door apparatus includes a revolving door assembly that is generally comprised of a ceiling panel, a floor panel, and a pair of curved vertical panels extending therebetween to form a rigid, conjoint assembly. The revolving door assembly i... | 04/27/2004 |
| 6474599 | Aircraft security system An aircraft security system comprises a transparent bullet-proof security chamber interposed between the pilot area and the passenger area, and providing the only means of passage to the pilot area. The security chamber has a cockpit door to the cockpit a... | 11/05/2002 |
| 5711231 | Service access system for automatic teller kiosk A secure servicing system for an automatic teller machine (ATM) or similar machine. An ATM is mounted on a rotatable/translatable baseplate in a kiosk with the operating side flush with an opening in the kiosk. By rotating and translating the baseplate, t... | 01/27/1998 |
| 5615623 | Front access automatic teller machine security enclosure A front access automatic teller machine security enclosure that includes a hollow parallelepiped-shaped rear portion, a hollow parallelepiped-shaped front portion, a service door, and a security shield. The front portion is smaller than the rear portion a... | 04/01/1997 |
| 4852503 | Sliding door safe with anti-intrusion lock device A sliding door safe with an anti-intrusion locking mechanism, wherein a one or two door arrangement slides in a given direction on rails or ledges between first and second grooves of unequal depths in opposing walls of the valuables receiving chamber. The... | 08/01/1989 |
| 4850287 | Safe with double sliding door A safe having a valuables receiving chamber with a generally rectangular access opening with a first ledge arrangement for placement of two plate-shaped separable steel doors thereagainst, with first and second grooves formed on the opposite walls transve... | 07/25/1989 |
| 4550667 | Safe having concealed hinges A safe having a body suitable for mounting in a building wall and having a door with concealed hinges. A pair of slide bars are pivotally mounted on the inner face of the door and are slideably received in slide channel blocks on the inside of the safe. W... | 11/05/1985 |
| 4548330 | Tamper resistant container A container for TV cables and terminals with mating edges between the stationary body part and its hinged door to reduce the opportunity for forced illegal entry by apartment and condominium dwellers.... | 10/22/1985 |
| 4493454 | Cash collection receptacle A cash collection receptacle for receiving coins and paper currency from a farebox is disclosed. The receptacle is comprised of a five-sided steel cashbox with two inner chambers which receive coins and currency separately from the farebox. The cashbox ha... | 01/15/1985 |
| 4438704 | Cassette for currency notes or other valuable articles A cassette which is arranged to hold currency notes or other valuable articles and which may be used for transporting currency notes from a bank to an automatic cash dispensing machine. The cassette includes a receptacle for notes, and locking mechanism f... | 03/27/1984 |
| 4408545 | Safe, and method and apparatus for building it A "do it yourself" burglar-resistent safe is provided at extremely low cost. The present apparatus and method make it possible and practical for almost any person, even a person having a low degree of manual skill and even a low intelligence, to construct... | 10/11/1983 |
| 4367684 | Safe having laterally retractable swing door wings A safe having laterally rectractable door wings is disclosed. At either s of the door opening of a safe, a retraction space is provided extending both upwardly and downwardly, and in the rear, beyond the useful space of the safe. Each of two door wings i... | 01/11/1983 |
| 4304188 | Locker for personal valuables The invention provides a locker for the safe-keeping of personal valuables, comprising a hollow body portion provided with an opening, an inner abutment means extending around at least part of the inner periphery of said opening, a door adapted to fit int... | 12/08/1981 |
| 4294040 | Safety door for buildings and rooms A safety door for buildings and rooms included two main sliding parts, a supporting column equipped with hinges and a door body supported by the hinges. The supporting column enters a first cavity with the fixed works (wall) at the side of the hinges duri... | 10/13/1981 |
| 4070074 | Tamper-proof cabinet A cabinet in which the closure or door thereof is rendered less vulnerable to unauthorized tampering which seeks to bypass the lock thereof as a result of the door being latched behind an edge of the cabinet front opening. Thus, opening of the door contem... | 01/24/1978 |
| 4043279 | Security box A wall type security box sized to fit between, and to be fixed to, adjacent studs in a wall opening. The box is locked by a lock device in the form of an elongated rod having a key cylinder on one end and screw threads on the other end. After closure of t... | 08/23/1977 |
