Device for recording descent data for skydiving

Details Device for recording descent data for skydiving Device for recording descent data for skydiving

1995-10-23

1997-09-23

Trammell, James P.

Boots, shoes, and leggings

36441331, 364558, 364557, 73 4R, 738652, 73178R, G01B 700

Patent

active

056711620

ABSTRACT:
This device can record descent data for successive skydiving jumps with a pressure transducer for providing a pressure signal signifying ambient pressure. The device also has a processor coupled to the pressure transducer for displaying descent data on a display. The processor has a triggering routine and a recording routine. The triggering routine can provide a trigger signal in response to predetermined changes in the pressure signal from the pressure transducer. The recording routine can record for each jump in response to the trigger signal, a datum corresponding to the pressure signal. Each datum is held for at least a predetermined number of succeeding jumps. A temperature sensor coupled to the processor can provide a temperature signal signifying ambient temperature. The processor can display through the display, altitude signals derived from the pressure signal and adjusted by the temperature signal. The process of recording includes detecting predetermined changes in the pressure signal from the pressure transducer to provide a trigger signal. The procedure also includes recording for each jump in response to the trigger signal a datum corresponding to the pressure signal and holding each datum for at least a predetermined number of succeeding jumps.

REFERENCES:
patent: 4835716 (1989-05-01), Tamahi et al.
patent: 4969358 (1990-11-01), Peet, II
patent: 5058427 (1991-10-01), Brandt
patent: 5224059 (1993-06-01), Nitta et al.
patent: 5295085 (1994-03-01), Hoffacker
patent: 5423215 (1995-06-01), Frankel
Hitech design of West Germany, Altitude Information System Flyer, no date, pp. 1,2.

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