"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7361855 | Device for establishing an electrical connection A device for establishing an electrical connection between two parts, in particular vehicle parts, which can move such that they can pivot with respect to one another about an axis, a first part (3) being provided with a current transmitter unit (1), a... | 04/22/2008 |
| 6768069 | Micro switch A micro switch is disclosed in the invention, which can be assembled and manufactured easily. Through a conjoining portion formed between a first conductive portion and a second conductive portion of resilient element that are used for switching on/off the electrica... | 07/27/2004 |
| 6762379 | Micro switch A micro switch is disclosed in the invention, which provides a micro switch that can increase the activation interval of pushbutton as well as can be assembled and manufactured easily. Besides, a round hole is provided at two sides of the main body corresponding to ... | 07/13/2004 |
| 5932856 | Power switch to prevent inadvertent activation of an emergency locating beacon A power switch for use with a personal locator beacon (PLB), or an emergency position indicating radio beacon (EPIRB), that prevents accidental activation of the beacon to prevent false alarm transmission of emergency signals. The personal locator beacon ... | 08/03/1999 |
| 5912445 | Miniature pushbutton switch with coil spring contact A miniature pushbutton switch capable of being made compact as well as being given a sufficient contacting pressure for reliable switch operation. The switch comprises a housing with first and second contacts, and an electrically conductive torsion coil s... | 06/15/1999 |
| 5717179 | Closet light switch A combination switch and socket is provided that can be easily installed without rewiring an existing fixture to give the user a closet light that automatically turns on when the closet door is opened and turns off when the door is closed. The socket can ... | 02/10/1998 |
| 5153395 | Lid switch for clothes washing machine A switch operated to an open circuit condition by a closed lid of an automatic clothes washing machine. The switch housing is comprised of two parts which mate with each other and with the specially configured switch operating shaft for inhibiting entry o... | 10/06/1992 |
| 5004879 | Switch housing with resilient retainers A switch housing in which a cylindrical hollow body of the housing has attached wing elements, each in the form of a partial cylinder and resiliently movable radially and circumferentially of the body, varying the overall transverse dimension of the housi... | 04/02/1991 |
| 4713502 | Controller for controlling electrical heaters A controller has an axially releasable locking unit operable to prevent rotation of a regulating shaft from at least one locking position, without first axially moving the regulating shaft. This push-to-turn or pull-to-turn locking unit is arranged entire... | 12/15/1987 |
| 4700163 | Removable magnetic switch security system for buildings A security system for a home to actuate a signal upon the opening of a movable closure member (12) mounted within a fixed framing member (14). The security system includes a switch assembly (20) having a cylindrical housing (24), a magnetic switch element... | 10/13/1987 |
| 4698466 | Automotive switch A vehicular switch for activating and deactivating a circuit or circuits in response to movement of one vehicular component relative to another such as a door relative to a door frame. The switch is a compact miniaturized unit insertable in the fixed comp... | 10/06/1987 |
| 4554618 | Switch, lamp, and connector assembly A combination switch, lamp, and connector assembly for illuminating a glove box compartment includes an insulator having an integral socket portion and an integral connector body portion, a pair of unitary contacts on the insulator extending between the s... | 11/19/1985 |
| 4455462 | Arc proof dual interlock safety switch A dual interlock switch assembly is provided which has particular although not exclusive application to X-ray units to prevent the unit from being energized whenever the access door is opened. The assembly includes a plug, formed of insulating material su... | 06/19/1984 |
| 4406935 | Door jamb switch In a door jamb switch of the type having a first member adapted to be fixedly secured onto a door jamb of a motor vehicle, a switch element having a first actuated condition and a second actuated condition and a plunger mounted for reciprocation in the fi... | 09/27/1983 |
| 4005295 | Component container A component container having a vessel portion and a cap is herein disclosed. A base forms part of the vessel portion. The base is connected to a substantially cylindrical housing. The cylindrical housing has an inside taper, an outside taper and a central... | 01/25/1977 |
| 3996434 | Household freezer door alarm switch having an automatic resetting deactivator A household freezer alarm system has a door alarm switch having a holding element that is movable to a position for releasably maintaining an actuating plunger of the switch at a deactivated position. At the deactivated position, the freezer can be cleane... | 12/07/1976 |
| 3989123 | Vandal proof interlock switch A conventional elevator system includes an elevator shaft, an elevator cab and means for moving the elevator cab along the shaft. The elevator cab has a sliding cab door to provide access thereto and electrically operated means for moving the cab door. A ... | 11/02/1976 |
| 3968484 | Spring-actuated security alarm for a door A security alarm device includes a housing of an electrically conductive material having a horizontal bottom base, a pair of upwardly extending end walls; a front face, and an upper end. An elongated rod member of an electrically conductive material havin... | 07/06/1976 |
| 3967080 | Switch device for indicating the undue opening of doors and closing-wings An intrusion detector device for signalling undue opening of doors and closing-wings in general. The device is housed in a cavity of the door jamb and comprises means for supporting an alarm controlling switch and an element swinging supported and retaine... | 06/29/1976 |