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"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 |
| 8148654 | Medium-voltage or high-voltage switching or control device, in particular a switchgear assembly A switchgear assembly is disclosed wherein to combine individual functions to form a standardized unit, without deviating from known technology, electrical cabling between the electrical functional components of the switchgear assembly can be replaced by a wiring in... | 04/03/2012 |
| 7238902 | Slider The present invention provides a slider which is less likely to cause a drastic change in a contact state such as instantaneous disconnection. The slider according to the present invention has teeth 13 of a comb shaped like a narrow sheet being rectangular in... | 07/03/2007 |
| 7161099 | Warning system for ignition switch A warning system for an ignition switch that includes a housing of the ignition switch and a plunger having at least a portion slidably received in the housing, a key abutment end and a contact abutment end opposite the key abutment end. The plunger is movable betwe... | 01/09/2007 |
| 5952632 | CPU set-up key for controlling multiple circuits A key activated switch matrix on a mother board that enables a dedicated key when inserted to select a subset of selectable parameters and thereby configure the mother board without further operator intervention. A housing having a slot is positioned on t... | 09/14/1999 |
| 5184490 | Key switch assembly A key switch assembly, which can reliably eliminate swinging of the key end and erroneous operation due to incomplete insertion of a key. A guide extends rearward of a lock cylinder received in a lock body and parallel to a switch juxtaposition. One side ... | 02/09/1993 |
| 4647734 | Binary switch lock A key controlled switching apparatus including a body for mounting in an enclosure, the body comprising a front body portion defining a front cylindrical shell and a rear housing secured thereto. A cylindrical locking plug defines a front keyway and is mo... | 03/03/1987 |
| 4464550 | Electrical switch having selective coding capability An electrical switch for use as a coding device comprises a plurality of pairs of associated contacts (2, 3) carried in a circular array by a base (1) and enclosed by a cover (5), and a coding key (11) receivable in holes (20, 21) in the base (1) and cove... | 08/07/1984 |
| 4333328 | Access identification apparatus Access identification apparatus which includes key operated switch actuating plates with exterior tangs that rock in one rotary direction to rock switch actuating elements in the opposite angular direction.... | 06/08/1982 |
| 4276453 | Electric switching device on a rotary cylinder lock An electric switching device on a rotary cylinder lock, particularly for gasoline pumps, with core pins which are controlled by the key, the stroke of the core pins bringing contact lugs in contact position to counter-contact surfaces. The core pin acts o... | 06/30/1981 |
| 4198552 | Key operated switch lock assembly A key operated switch lock assembly comprising one tumbler lock, a plurality of rotary switches, and at least one key. The switches are supported rearward of a lock housing of the lock, and the key has an elongated portion which protrudes rearward of the ... | 04/15/1980 |
| 4185179 | Key-switch device A key-switch device has mechanisms for locking an actuating member and devices for switching an electric circuit printed on a board. A specific key for releasing the lock of the actuating member is inserted into a key way in the actuating member, and the ... | 01/22/1980 |
| 4104490 | Coding lock A lock system for cash registers or the like which does not require rotational movement of a key. The system has a key, with a pattern of lugs and gaps along an edge thereof, and a lock containing one row of fixed and one row of movable contacts are urged... | 08/01/1978 |
| 4051349 | Recording unit A cylinder lock wherein the insertion and rotation of a selected one of associated keys results in a projection of certain pins, mounted in a row parallel to the axis of the cylinder, radially beyond the cylinder surface in response to the irregularities ... | 09/27/1977 |
| 4023161 | Key device for producing binary codes A key device for producing binary codes, wherein an output shaft is rotated by any of separately provided keys in sliding contact with the inner wall of a hole penetrating an outer casing; a plurality of push pin assemblies are provided; a plurality of sw... | 05/10/1977 |
| 3944762 | Key-operated switches A key operated switch device in which any one of a set of different keys may be utilized to operate a particular combination of sets of electrical contacts unique to that key, the sets of electrical contacts being provided by reed switches located adjacen... | 03/16/1976 |
| 3943309 | Lock mechanism A locking mechanism of the cylinder type for a business machine wherein four different keys can be accommodated in a single lock to perform various functions or modes of operation. The mechanism includes ring members and locking pins operably associated w... | 03/09/1976 |
