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"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7739835 | Opening device An opening mechanism having a cover assembly, a base mounting plate, and a lever member. The lever member has a first arm and a second arm, which pivot from a first position to a second position. The movement of the arms from the first position to the second positio... | 06/22/2010 |
| 7543409 | Door pull and sash window having the door pull A door pull (10) has a fixing portion (11) fixed on a door stopper stile (8A) of a door, an operating portion (12) fixed slidably in the opening direction of the door and adapted to slide relative to the fixing portion (11) in the ... | 06/09/2009 |
| 7328933 | Door assist pedal The present invention provides a door assist pedal assembly including a housing member that is mountable to a vehicle floor panel. A pedal is pivotably secured to the housing member, and a cam is also rotatably secured to the housing member such that the cam is enga... | 02/12/2008 |
| 6802155 | Door opening and closing mechanism with dual pivot axis for a door A door opening/closing mechanism fitted on a door that closes and opens an opening formed in the body of an apparatus by being brought into and out of contact with the rim of the opening has cam mechanisms that permit the door to engage with and disengage from the b... | 10/12/2004 |
| 6341450 | Composite water-tight door panel installation A light-weight door panel flush with the external surface of a wall structure in its closed position sealing an opening, is mounted for displacement to an open position by hinge linkage confined to its underside. In its closed position supported on the bu... | 01/29/2002 |
| 6305500 | Material delivery system for clean room-like environments A material delivery system is disclosed which is particularly useful for filtered environments, such as clean rooms, minienvironments, or the like. In one embodiment, the material delivery system is disposed below a work area in a clean room-like environm... | 10/23/2001 |
| 5956902 | Underground mine personnel doors A mine door for use in underground mining includes a door panel hingedly mounted to a door frame. A substantially noncombustible seal member is interposed between the door frame and the door panel and is preferably comprised of a flexible outer sleeve hou... | 09/28/1999 |
| 5337977 | Vent-latch interlock assembly for an aircraft door A vent-latch interlock assembly (22) for installation to an aircraft door (20) that is provided with a latch assembly (32) that controls the opening and closing of the aircraft door. The vent-latch interlock assembly includes a pressure vent door (40) tha... | 08/16/1994 |
| 4911508 | Cabinet with foot pedal-operated door opener A cabinet structure having an improved user-mountable foot pedal-operated door opener. The pivot rod of the door opener may be mounted by the user to brackets previously mounted to the cabinet by the manufacturer, permitting completed installation of the ... | 03/27/1990 |
| 4590710 | Seal for a shielding enclosure with opening A seal assembly for an enclosure, which attenuates or eliminates frequencies through the enclosure, and including a non-magnetic electrical conducting membrane on a door frame to which the door seals. Also, means for opening the door from either of its si... | 05/27/1986 |
| 4390196 | Sliding door starter and closer A compact door driver is provided on a railway house car for moving a railway car door between a closed or locking position and an open or sliding position. The door driver includes a lever having a crank arm and is rotatably mounted on a structural membe... | 06/28/1983 |
| 4350376 | Locking device for swiveling window The invention concerns a device for locking a swiveling window in a closed or partially open position. The device includes a rod (4) articulated (i) so as to slide within a handle or control lever (1) mounted so as to pivot on a rest (2), and (ii) to a yo... | 09/21/1982 |
| 4344366 | Railway car door driver A railway house car is provided with a sliding door and door driver. The door driver includes a lock having a door mounted hasp and upper and lower bracket portions mounted on a fixed door post for common engagement with a locking pin. The lower bracket p... | 08/17/1982 |
| 3991520 | Appliance door opening device A push to open door opening assembly for appliance doors including a single molded opening piece positioned between front and back panels of a substantially hollow door with a pushbutton section projecting through the front panel and an actuator ram proje... | 11/16/1976 |
| 3969845 | Door construction A door hinged in a frame at one edge has a pivotal locking element along its other edge, with a longitudinal groove cooperatively receiving a counter-locking projection on the frame. The locking element includes a rotation stop to prevent the rotation of ... | 07/20/1976 |
| 3942286 | Hinged window with quick release bar A window construction which is characterized by a sash frame hingedly mounted at the top of an opening in a generally vertical wall and provided with a latching mechanism comprising keepers on the inside face of the wall adjacent the bottom of the wall op... | 03/09/1976 |
