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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7356968 | Polymer composite basement door Cellar or bulk head doors having sidewalls are provided which are made of a polymer and which are strong, durable, attractive, virtually maintenance free, easily assembled, have connection and anchorage points which allow the door assembly to be used over a wide tem... | 04/15/2008 |
| 7320487 | Cancel lever device for a door handle of a motor vehicle A cancel lever device is disclosed for a door handle mechanism of a motor vehicle. The device includes a cancelling portion having a first and a second side, the cancelling portion being pivotally secured relative to the door handle mechanism about a pivotal axis. T... | 01/22/2008 |
| 7278241 | Window assembly A window assembly comprises a window frame. A non-specular window panel assembly is supported by the window frame, and can comprise of a plurality of glass blocks joined together. A low-emissivity window panel assembly is juxtaposed to the non-specular window panel ... | 10/09/2007 |
| 7275770 | Interlock system for enclosures An apparatus to interlock a multi-door enclosure includes an actuating member slidably mountable to the enclosure between a primary door and a secondary door. The actuating member includes a first end extendable through an opening in a door post between the primary ... | 10/02/2007 |
| 7140154 | Astragal boot for a double door set An astragal boot provides a substantially weatherproof seal at a lower end of a vertically elongated astragal installed on the free side edge or stile of a semi-active door in a double door entry set or the like. The astragal boot includes at least one and preferabl... | 11/28/2006 |
| 7070211 | Integrated tilt/sash lock assembly An integrated sash lock and tilt latch assembly for a sash window slidable within a master frame, including a handle movable among a first, a second and a third position to adjust the assembly among a respective locked, unlocked and tiltable position. The integrated... | 07/04/2006 |
| 6938372 | Pneumatically-powered mine door installation with hydraulic checking system A mine door assembly has a frame. 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. The door installation also has a hydraulic checking system for con... | 09/06/2005 |
| 6910301 | Seal for a bi-parting door A door seal for use with a bi-parting door in which the door panels of the door have supplementary angled leading edges. One leading edge has a triangular cross-section, while the other has a cross-section similar to a parallelogram. To further the reliability of th... | 06/28/2005 |
| 6729701 | Safety cabinet A safety cabinet is disclosed which includes an enclosure having a double-wall construciton and a pair of doors to selectively seal the enclosure. The safety cabinet includes a retaining system for retaining the doors in an open position and a closure system for aut... | 05/04/2004 |
| 6725602 | Automatically extendable astragal system An extendable astragal system (40) includes a housing (47), an actuating member (48) located in and slidably engaged with the housing (47), and an astragal (50) located in the housing (47) and slidably engaged with the housi... | 04/27/2004 |
| 6449904 | Closure sequence control mechanism for a pair of doors A first door closer unit and a first swing arm close a first door leaf of a pair of door leaves arid a second door closer unit and a second swing arm close the second door leaf of the pair. A guide rail supported by a door frame guides the distal ends of ... | 09/17/2002 |
| 6401393 | Door closing arrangement for a double door First and second door leaves are pivotable with respect to a door frame and each door leaf has a hinge edge at which it is hingedly attached to the door frame. Each door leaf is provided with a door closer and a pull arm for closing the door leaf. The doo... | 06/11/2002 |
| 6328205 | Secure cluster box unit for mail and parcels An interlocking door seam provides a stronger seam for double doors, making them less subject to attack by prybars and the like. Particularly for central mail stations (CMS) and central box units CBU, double doors present there are subject to attack by pr... | 12/11/2001 |
| 6296181 | Interlocking door seam An interlocking door seam provides a stronger seam for double doors, making them less subject to attack by prybars and the like. Particularly for central mail stations (CMS) and central box units (CBU), double doors present there are subject to attack by ... | 10/02/2001 |
| 6250015 | Self-latching mechanism for a safety cabinet A mechanism for self-latching access doors of a safety cabinet following sequential self-closing of the doors. Latching takes place between the doors and at a top and bottom frame of the cabinet. A latching arm and two actuating arms extend from a bellcra... | 06/26/2001 |
| 6250014 | Compact door coordinator The present invention is a compact door coordinator which includes a relatively narrow housing having mounted therein and extending therefrom a lead control lever and a longer trailing control lever. Both control levers are spring biased to extend from th... | 06/26/2001 |
| 6247641 | Secure cluster box unit for mail and parcels An interlocking door seam provides a stronger seam for double doors, making them less subject to attack by prybars and the like. Particularly for central mail stations (CMS) and central box units CBU, double doors present there are subject to attack by pr... | 06/19/2001 |
| 6101764 | Pivoting door of the type having at least one leaf of which two bars are mounted in parallel by means of links A pivoting watertight door has at least one panel with two parallel bars mounted thereon by means of links. At least one link forms a catch for locking the door in a closed position. The links are mounted so as to pivot on the door panel and also on the p... | 08/15/2000 |
| 5992098 | Safety cabinet latching system A safety cabinet for the storage of flammable or combustible materials that has doors and a closure mechanism designed to automatically close and latch the doors in the event of fire. The closing mechanism is fully automatic and eliminates mechanical timi... | 11/30/1999 |
| 5944399 | Safety cabinet with self-closing and sequencing door mechanism A safety cabinet for the storage of flammable or combustible materials has doors designed to automatically close in a specified sequence. The door sequencing device has three components: a stop bracket mounted to one door, a cam bracket mounted to the oth... | 08/31/1999 |
| 5822923 | Door with swinging side light panel A door assembly includes a conventional swinging door which closes against a side light panel that is normally locked in place and effectively forms part of the jamb. The side light panel is, however, mounted on hinges so that it can swing open when unloc... | 10/20/1998 |
| 5722202 | Sequential door closing mechanism A mechanism for closing in sequence a first door (D1) and then a second door (D2) has pivot pins (40) mounted to the door frame. Each pin engages a cam plate (30), so that the plate can rotate. Linkages, such as doors arms (20) hinged from each door to th... | 03/03/1998 |
| 5651216 | Door closer for a two-panel door with a closing sequence control mechanism A door closing mechanism for a two-panel door having a leading panel and a trailing panel disposed adjacent to one another and being hingedly connected to a door frame. The door closing mechanism controls the closing sequence of a leading panel and a trai... | 07/29/1997 |
| 5586793 | Lock for slide bolt latches A door latch assembly having open and closed positions comprises a door latch and a locking clip removably mounted upon it. The door latch has a bracket mounted on a door and an elongated bolt with a shank slidably and rotatably seated in the bracket. The... | 12/24/1996 |
| 5582472 | Solvent storage cabinet An improved storage cabinet is provided which is particularly suitable for the safe storage of flammable materials. An embodiment of the cabinet includes two side-by-side doors which close toward each other. Each door is self-closing, being biased in a cl... | 12/10/1996 |
| 5471790 | Electrical swing gate A pair of swingable electrified gate sections in a closed position, to be swung to an open position by the travel of a center pivot irrigation system. As the center pivot system travels through the gate area, the gate closes. Each section is connected to ... | 12/05/1995 |
| 5428925 | Fiberglass bulkhead door assembly A fiberglass bulkhead door assembly includes a bulkhead enclosure for mounting on a bulkhead, at least one door and top and bottom hinges for mounting the door to the bulkhead enclosure. The bulkhead enclosure includes fiberglass side walls, a sloping fib... | 07/04/1995 |
| 5328217 | Locking astragal A locking astragal for attaching to an inactive leaf of a double doorway. In the illustrated embodiment, an elongated astragal casing has a channel and bolt-slide assemblies mounted slidably within the channel. Each bolt-slide assembly includes a latching... | 07/12/1994 |
| 5240349 | Power mine door system A power mine door system including a door frame to be installed in a mine passageway to define a generally rectangular doorway. A mine door is defined by a pair of generally rectangular door leafs which are hinged on the door frame at opposite sides of th... | 08/31/1993 |
| 5199216 | French casement window operator An operator for a French casement window having an operating arm with a roller mounted at its end and pivotable to move in an arc between extended and retracted positions, and a channel member horizontally mountable on the inner side of one sash and confi... | 04/06/1993 |
| 5165740 | Anti-racking means and method for cargo container doors In a rotary tube locking mechanism, the rotary tube itself is expanded into and against a steel ring which journals the tube to form an obstruction. A guide plate cooperates with this obstruction to provide an anti-racking function.... | 11/24/1992 |
| 5061022 | Door closing mechanism A door closure arrangement is provided for a paint cabinet or like enclosure containing combustible materials. Right and left hand doors are hinged to door jambs in the cabinet's opening and an overlapping lip is provided on one of the doors to insure tha... | 10/29/1991 |
| 5033234 | Door coordinator A door coordinator for controlling the closing sequence of a pair of double doors having a common line of closure. The coordinator has a biased trigger which pivots and a door stop which translates toward the rear of the coordinator upon triggering. Overr... | 07/23/1991 |
| 4967512 | Arrangement for controlling the closing sequence of two wings of a door, window or the like An arrangement for controlling the closing sequence of two wings of windows, doors, and the like, especially smoke or fire protection doors, which are closable by means of a door-closing device each. The two wings are a moving wing to be opened first and ... | 11/06/1990 |
| 4949505 | Door cordinator The coordinator has a pair of spaced-apart limbs pivotably mounted to a housing; one of the limbs functions to hold a door open, whereas the other limb is disclosed for impingement by another door and, as a consequence thereof, causes activation of the do... | 08/21/1990 |
| 4937978 | Joining of side-plates at a metal door A metal door construction has two sheet-metal panels 10,11 which form the flat sides of the door. The panels present folded side-edge portions 10a-10g, 11a-11e which extend parallel to and in contact with one another within a joint region 10f; 11e. One pa... | 07/03/1990 |
| 4688492 | Two door safe The internal space of a safe is subdivided into two compartments lying side by side by a vertical partition provided with a reinforced vertical upright. A reinforced closure door comprises two leaves adapted to be closed in succession, each having its own... | 08/25/1987 |
| 4653229 | Holding installation for double doors A holding installation with an integrated closing sequence regulation is described for double doors comprising a leading door which is the first to close and a trailing door which then closes. The hydraulic door closer associated with the trailing door is... | 03/31/1987 |
| 4644696 | Patio door assembly for removable astragal A double door installation includes an astragal which is removably mounted in the head jamb and sill portions of the door frame independently of the doors, but the combination includes a locking mechanism in one door which incorporates a bolt arranged to ... | 02/24/1987 |
| 4619076 | Safety cabinet latching system A safety cabinet for the storage of flammable or combustible materials that has doors and a closure mechanism designed to automatically close and latch the doors in the event of fire. The closing mechanism is fully automatic and eliminates mechanical timi... | 10/28/1986 |
