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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 |
| 7426157 | Electronic practice device An interval timer combining the features of a practice timer, means of measuring date and metronome into a single device for the purpose of measuring, recording, and displaying practice records over a period of weeks or months. During the measuring of practice time,... | 09/16/2008 |
| 7376051 | Clock with selected audio messages A clock has a solid state memory or other storage medium containing many messages, each of which preferably is appropriate to a particular date, time of day, week, season, etc. The clock is self-contained, without connection to any network for message content. In se... | 05/20/2008 |
| 7342848 | Lap timer The invention relates to an electronic timing device. The timing device has several modes including Basic mode and Lap mode. Additionally, the timing device computes the speed of an item being timed. Further, the outside of the device is designed to display informat... | 03/11/2008 |
| 7334182 | Serial data preservation method A timer circuit for tracking an elapsed time of an electronic device is provided. The timer circuit compares differences in elapsed times written to memory addresses of a memory chip with a periodic interval to determine whether any elapsed times written to the memo... | 02/19/2008 |
| 7277361 | Timekeeping device A timekeeping device enables easily knowing how much playing time has passed and can automatically keep track of time added to compensate for stoppage time. The timekeeping device 1 has a input unit 2, a display unit 3, an alarm unit 5, a... | 10/02/2007 |
| 6987712 | Analog chronograph timepiece having plural motors An analog chronograph timepiece has a main plate and a setting stem for correcting time information. Defined at the main plate are a reference vertical axis line passing through the rotational center of the main plate and disposed parallel to a central axis line of ... | 01/17/2006 |
| 6965841 | Pace measuring device To let the user easily recognize the results of comparison of paces. A chronograph control unit calculates a pace of running that is just completed by dividing the moving time measured by a chronograph measuring unit, by a preset distance stored in advance in a stor... | 11/15/2005 |
| 6909671 | Time computing device and predictive method therefor A time computing device including an actuator mechanism for actuating a timer mechanism, which outputs elapsed time quantity. The actuator mechanism provides selection inputs corresponding to race total distance quantity and split number quantity. A central control ... | 06/21/2005 |
| 6785193 | Medical timing system for use before and during childbirth labor A handheld childbirth labor timing apparatus includes a timing device with a visible display, a calculating device, a memory device and a selection device. In various embodiments the apparatus is programmed to execute methods for the simple timing of the durations o... | 08/31/2004 |
| 6614726 | Stopwatch A stopwatch has a measuring section for measuring a primary physical quantity, a memory section for previously storing as a target value the value of the primary physical quantity at a point where a time is to be recorded, and recording sections for recor... | 09/02/2003 |
| 6552965 | Electronic clock A clock stores time data indicative of time of operation of a power machine. A timing circuit provides a timing signal and a controller is coupled to a timing circuit and to a memory, which includes a plurality of memory locations. An elapsed time value i... | 04/22/2003 |
| 6314384 | Medication management apparatus A portable system for reminding a patient and keeping track of the prescription and use of medications. The system comprises a portable unit and a software application program loaded in a PC-type computer. The portable unit consists mainly of a compact po... | 11/06/2001 |
| 6188311 | Maternity and life time tracking apparatus and method of use According to a preferred embodiment of the invention, an electronic apparatus and a method of its use are provided to keep track of events and elapsed time, during the life of a child, from a time prior to the child's birth. The apparatus has the function... | 02/13/2001 |
| 5508977 | Service technician time recorder A time recorder stores on and off times of technician repair jobs and receives repair order numbers and flat rate times through a key pad input. The time recorder prints flag tickets on adhesive-backed paper for application to repair orders. The system al... | 04/16/1996 |
| 5377169 | Electronic event display apparatus A display unit is arranged in cooperation with a twenty-four hour clock to effect registration and storage of timed events and permitting recall of the timed events, with the unit arranged for ease of mounting within an emergency vehicle and the like.... | 12/27/1994 |
| 5229981 | Digital multi event timer A digital multi event timer that makes it simple to measure and record both time intervals and the actual times at which they begin. An electronic time base generates driving signals for seconds, minutes and hours. When a measurement set button is pressed... | 07/20/1993 |
| 5148376 | Pressure instrument with depth/altitude and time display In a pressure instrument with depth/altitude and time display, a measurement time period from a starting instant up to a stopping instant of the time measurement is measured by measurement-time counting means, and also another measurement data is acquired... | 09/15/1992 |
| 5140564 | Exam timer A timing device for pacing an examinee through a timed, multi-question examination. The device includes means for inputting a plurality of signals corresponding to a number of questions and a time interval for answering them. Memory means are provided for... | 08/18/1992 |
| 4993004 | Passively activated lap counter and timer A wearable device for automatically counting and timing the repetitions or laps during an athletic activity. The device preferably is worn either on the palm of the hand or the ball of the foot and comprises a raised, pressure-sensitive area which is depr... | 02/12/1991 |
| 4901294 | Electronic time measuring apparatus including acoustic data recording/reproducing functions In an electronic time measuring apparatus combined with a timepiece, acoustic data such as voice information related to the time measurements can be recorded in relation to the measured time data, for instance, split times and lap times the electronic tim... | 02/13/1990 |
| 4812805 | System for interconnecting parking meters having a memory The invention relates to a system for interconnecting memory slot machines, for example parking meters or ticket vending machines. Each slot machine (B1, B2, . . . ) includes a circuit (C1, C2, . . . ) which rec... | 03/14/1989 |
| 4797864 | Race stopwatch with plural displays and operating modes A microprocessor-based electronic timekeeping apparatus or stopwatch for measuring multiple intervals of time, such as the elapsed times of a race horse covering successive distances of a race course, is disclosed. This hand-holdable, self-contained stopw... | 01/10/1989 |
| 4769797 | Stop watch A watch, comprising a reference signal generator circuit, a stop watch circuit, an external operation switch, a display selection circuit, an elapsed time display timer, and an impact detecting circuit, wherein an elapsed time is displayed at a display el... | 09/06/1988 |
| 4640624 | Time computer and display device An electronic time computer and display particularly suitable for use by road race runners in the form of an electronic stop watch indicating cumulative time and including a second display indicating an element of time between the latest two actuations of... | 02/03/1987 |
| 4571698 | Apparatus and system for remote timing of plural entities A system and method for timing a plurality of entities, typically marathon runners over a premeasured course including a first transmitter at the starting line for transmitting a predetermined type signal. Each runner carries a timing unit actuable upon p... | 02/18/1986 |
| 4533256 | Dive timer A dive timer for divers which automatically begins measuring bottom time after detecting submergence below a predetermined depth and, upon resurfacing, automatically stores the measured bottom time in memory and begins measuring the surface time following... | 08/06/1985 |
| 4396904 | Electronic pace timing device An electronic pace timing device whereby a physically perceptible pace timing signal can be repetitively generated, and whereby the repetition frequency of this pace timing signal can be set into the pace timing device as a numeric value, by actuation of ... | 08/02/1983 |
| 4385841 | Digital program control clock An electronically actuated system for a control clock device is provided with an instrument panel arranged in such fashion that an operator having virtually no familiarity with the technical aspects of the system can set up a program of activity, such for... | 05/31/1983 |
| 4367051 | Relative time interval measuring instrument Upon depression of a number key, the timer memory corresponding thereto is started to be in its counting operation state, and when the number is depressed again, the timer memory stops its counting operation. When a relative difference key is depressed, a... | 01/04/1983 |
| 4364668 | Timepiece with seconds display on demand An analog display timepiece includes an hours hand and a minutes hand. A control in association with electronic means enables transformation of the minutes hand into a seconds hand and the hours hand into a minutes hand which advances through an angle of ... | 12/21/1982 |
| 4364669 | Chronographic watch The watch, as exemplified by FIG. 6, comprises a motor 9 which drives the hands of a timepiece mechanism and a motor 15 which advances those of a chronographic mechanism. When the timepiece mechanism is in operation, a counter 98 receives every six second... | 12/21/1982 |
| 4280063 | Electronic timer device A timer device includes a counter which counts output pulses from an oscillator, and, when counting a prescribed number of pulses, sends forth an output signal, a transistor rendered conductive in response to the output signal from the counter, and a rela... | 07/21/1981 |
| 4259737 | Electronic watch An electronic timepiece with analog display by seconds, minutes, and hours hands driven by a bidirectional stepping motor, in which the seconds hand can be used to display information different from the seconds count, the time displayed by the minutes and... | 03/31/1981 |
| 4247927 | Digital electronic timepiece A digital electronic timepiece which comprises an oscillator circuit providing a relatively high frequency signal, a frequency divider dividing down the relatively high frequency signal to provide a first low frequency signal representative of the count o... | 01/27/1981 |
| 4246650 | Multi-function electronic timepiece The disclosed is an electronic timepiece which has storage circuits for respectively storing data regarding a variety of times such as an alarm time for different operating modes, stop watch, timer, etc., a data processing circuit commonly provided for al... | 01/20/1981 |
| 4236375 | Electronic watch An electronic watch having a time counter circuit for developing a count representative of present time, a second time counter circuit for developing a count representative of time, and a chronograph counter circuit for developing a count representative o... | 12/02/1980 |
| 4193255 | Electronic timepiece with calendar function An electronic timepiece comprising a counter circuit adapted to present reference data indicative of an existing year, month, date and day of the week, and operative to count leap years, years, months, dates, and days of the week at a high speed with a pr... | 03/18/1980 |
| 4158285 | Interactive wristwatch calculator An apparatus is disclosed comprising an electronic wristwatch and a multifunction electronic calculator in a single wrist mountable case having a common display and keyboard. The watch portion of the watch/calculator includes time of day, calendar, stopwa... | 06/19/1979 |
| 4156281 | Electronic instrument In an electronic instrument having a keyboard including numeric keys for entering numerical data into the instrument and instruction keys for entering instructions into the instrument, there is provided a memory responsive to the operation of the numeric ... | 05/22/1979 |
| 4094138 | Electronic chronograph The chronograph comprises a device allowing to memorize at least two lapses of time and a subtraction device to effect the absolute difference between two lapses of time or time intervals which are memorized and preselected. The subtraction device include... | 06/13/1978 |
