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Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 8059491 | Rescue-facilitating communicating wrist watch A rescue-facilitating, preferably water resistant communicating wrist watch. A housing is attachable to a user's wrist by a wristband with a microprocessor is disposed therein. A display is provided in communication with the microprocessor and has at least one visib... | 11/15/2011 |
| 7782714 | Time piece forming a navigation aid for pilots and seamen Timepiece, particularly of the wristwatch (1) type, forming a navigational aid for aviators or navigators, including at least a bezel (46) and a ring (38) that are concentric, at least one of which rotates, the bezel (46) bearing first in... | 08/24/2010 |
| 7778116 | Timepiece having compass feature A timepiece, including a compass for indicating north, a directional display, and a controller, where the controller allows a user to select a bearing direction relative to north, and where the directional display provides a first visual indication to the user when ... | 08/17/2010 |
| 7414921 | Portable electronic device with radiofrequency signal receiver and method for determining the position of the same The portable electronic device, preferably a wristwatch, includes a radiofrequency signal receiver for receiving, in particular, GPS signals via an antenna, a magnetic compass, a microprocessor data processing unit for processing data provided by the receiver and th... | 08/19/2008 |
| 7406003 | Multifunctional timepiece module with application specific printed circuit boards An electronic device that includes functionality to perform at least two functions, a first of which may be timekeeping and the other of which is at least a function other than the first function. The electronic device comprises a multilayered module comprising a fr... | 07/29/2008 |
| 7113451 | Electronic watch having a compass function The multi-function watch (1) includes a magnetic sensor assembly associated with its electronic circuits. The hands (7 to 9) of its display are activated by electric motors to indicate the time in a time mode and directions in a compass mode. In... | 09/26/2006 |
| 6965801 | Method and system for controlling one or more apparatus based on a geographic location A method and device that controls one or more apparatus in relation to the expected time of sunrise and sunset at the location of the apparatus. The operator enters a geographic location identifier, such as a zip code or telephone area code, and the controller compu... | 11/15/2005 |
| 6963818 | Mobile speedometer system and associated methods The invention detects loft time and/or speed of a vehicle and/or person during activities of moving and jumping. A loft sensor detects leaving the ground and returning to the ground. A microprocessor subsystem converts the sensed information to determine a loft time... | 11/08/2005 |
| 6958692 | Personal organizer equipment Location-dependant personal organizer apparatus for operation with a memory for storing a plurality of appointment entries, each appointment entry including data specifying a time and a place; the personal organizer comprising: a locating unit capable of determining... | 10/25/2005 |
| 6559796 | Method and device for emitting a time signal A satellite provides a time signal that is adjusted for position of a receiver on the surface of the Earth. A receiver determines appropriate local time from the time signal, and can adjust a local clock accordingly, the satellite time signal in the form ... | 05/06/2003 |
| 6366834 | Time display method and apparatus A difference in time from a standard time for each state, or where a state belongs to a plurality of time zones, a difference in time for each time zone and boundary information for specifying a state portion belonging to each time zone, are stored. In op... | 04/02/2002 |
| 6252824 | Electronic time piece with a bearing detector An electronic timepiece has an oscillating circuit for producing a clock signal. A dividing circuit divides the clock signal and produces a divided output signal used to count elapsed time. A calculating circuit calculates time information in accordance w... | 06/26/2001 |
| 6185157 | Timepiece including a GPS receiver, arranged in particular, for indicating the direction of a "target" location A timepiece (7) including hands (4, 5), direction determining means (10, 11, 14, 12) including data input means (14) arranged for inputting the geographical coordinates of a "target" location in data processing means (12). This timepiece is characterized ... | 02/06/2001 |
| 5697162 | Arrangement serving to indicate the direction of a given geographic location The arrangement (42) according to the invention is formed by a watch comprising a dial (8) on which is shown a map (14) centered on a given geographic location, Mecca in particular. The arrangement (42) comprises a device (48) for indicating the direction... | 12/16/1997 |
| 5600611 | Wrist mountable compass A wrist mountable compass capable of directing a user to a selected compass direction is provided. In the preferred embodiment of the compass, the user selects the compass direction. The user is directed to the selected direction by digital pointers appea... | 02/04/1997 |
| 5596551 | Watch comprising an arrangement for detecting the direction of the terrestrial magnetic north Watch comprising an arrangement for detecting the direction of the terrestrial magnetic north formed by a permanent magnet and at least two magnetic sensors (34, 36) arranged for detecting the flux of the magnetic field of the magnet. The watch moreover c... | 01/21/1997 |
| 5576100 | Magneto-optical recording medium The invention relates to a magneto-optical recording medium having a magneto-optical layer which is composed of a quaternary alloy of Ndx Tby Fez Com, the quantitative proportions of the alloying elements x, y, ... | 11/19/1996 |
| 5550794 | Watch including an arrangement indicating the magnetic north A watch including an arrangement (14) indicating the terrestrial magnetic north. Such terrestrial magnetic north indicating arrangement is fitted into the watch case (32) in a lateral peripheral region of the horological movement (2). Specifically, the te... | 08/27/1996 |
| 5216816 | Compass In a compass, the direction of the geomagnetism is detected by magnetic sensors and an azimuth detector, and data on the direction of the geomagnetism is supplied to a controller. A ROM stores declination data representing the angle formed between the dir... | 06/08/1993 |
| 5175936 | Electronic compass An electronic compass can store azimuth data of points to be passed by a user in a plurality of registers, and the stored azimuth data are sequentially displayed on a display device every time an external operation switch is operated. The compass includes... | 01/05/1993 |
| 4901291 | Wrist watch type receiver of fish sonar Fish sonar signals, temperature signals, PH signals or speed signals of a boat which are emitted from a transmitter as RF signals are respectively received in a wrist watch type receiver, and are displayed on a display device attached to a case of the wri... | 02/13/1990 |
| 4835716 | Compact measuring apparatus capable of measuring two different data with a single pressure sensor Only one pressure sensor is employed in a compact measuring apparatus for measuring both depths of water and altitude. A pressure-data generator generates pressure data corresponding to a pressure applied to the single pressure sensor. A water-depth data ... | 05/30/1989 |
| 4702612 | Compass-watch case The compass is composed of a glass plate constituting a transparent outer component and of a thin plate constituting an inner transparent component. Two bearings are fixed in holes in these plates, one bearing being situated near the upper face and covere... | 10/27/1987 |
| 4694694 | Solid state accumulating altimeter An altimeter device employs a solid state pressure sensor having a strain-sensitive element directly in a silicon diaphragm, which is connected at one side to a closed vacuum chamber. The entire device is very compact and may be in the form of a wristwatc... | 09/22/1987 |
| 4668100 | Electronic equipment with geomagnetic direction sensor Electronic equipment has, in its case, a flux gate magnetic sensor with an excitation coil and a sensing coil wound around an annular magnetic core made of high permeability material, an integrated circuit including a magnetic field detector, cooperating ... | 05/26/1987 |
| 4602340 | Information distribution system A system is provided for distributing coded time or other information signals through the electrical gridwork of a facility such as a home, office, factory, or mobile vehicle for purposes of information display and/or control and monitoring of equipment a... | 07/22/1986 |
| 4512667 | Portable information device having an output related to natural physical events A pocket sized portable information device provides an alarm indicating Moslem prayer times. Means are provided for entering information identifying geograpical location, from which the hours of sunrise and sunset are calculated and then the prayer times.... | 04/23/1985 |
| 4482255 | Timepiece for displaying both time and orientation of the timepiece relative to the terrestrial magnetic field A timepiece is provided which in addition to indicating information concerning the time and the date furnishes information relating to the direction and sense of the terrestrial magnetic field. The display is provided with an arrow which may be permanent ... | 11/13/1984 |
| 4337530 | Universal time-keeping system and apparatus A time-keeping method and device, especially useful as a novelty device for astrologers, that divides a day into twelve equal periods of time. Each period of time is further sub-divided into one-hundred equal sub-periods of time. Each sub-period of time m... | 06/29/1982 |
| 4183206 | Portable watch, especially wristwatch A portable watch and compass device is provided which has a separate housing for the watch and compass. The housing for the watch is arranged above the compass housing and is movable about a hinge axis extending parallel to the longitudinal extent of a pe... | 01/15/1980 |
| 4072849 | Apparatus and method for calculating vehicle movement parameters An apparatus and method of calculating a vehicle's elevation, speed, distance and time to arrive at a predetermined point. The apparatus includes a mechanical spring-driven clock mechanism having a rotating settable pointer passing adjacent a clock face f... | 02/07/1978 |
| 4010603 | Time marking chronometer A fully electronic chronometer using a quartz crystal as a frequency standard and displaying mean time by the use of electronically operated digital read-outs. The circuit permits the display of the instant of time at which a switch is operated, while mea... | 03/08/1977 |
| 3967098 | Navigation instrument A digital navigation instrument primarily intended for the general aviation pilot. The navigation instrument combines the functions of a calculator and a stopwatch and provides a method of easy reference to a navigation chart. The resulting unit provides ... | 06/29/1976 |
