Abstract

The invention concerns a timepiece (1) with an integrated true airspeed indicator, which comprises a case that is closed by a glass (5) and formed of a back cover (2) and a middle part (3); a time display (6); a bezel (7) comprising a rotatable part (8) with a circular first edge (9); a time keeping circuit (10) controlling the time display (6); and at least one energy source (11) powering the time-keeping circuit (10). One preferred embodiment of the timepiece according to the invention is characterized in that the bezel (7) comprises Indicated Air Speed (K. I. A. S.) marks and Flight Level (F. L.) marks that are in each case directed radial to the first edge (9) of the rotatable part (8) of the bezel (7) and that are diametrically opposed to each other. The inventive timepiece (1) comprises an indicator ring (12) with a circular first edge (13) that is concentrically arranged with and that is located close to the first edge (9) of the rotatable part (8) of the bezel (7). The fixed indicator ring (12) comprises Flight Level (F. L.) marks and Knots True Air Speed (K. T. A. S.) marks that are in each case directed radial to the first edge ( 13) of the indicator ring (12) and that are diametrically opposed to each other in such a way that the (K. I. A. S.) marks of the rotatable part (8) of the bezel (7) are located opposite the (F. L.) marks of the indicator ring (12) and that the (F. L.) marks of the rotatable part (8) of the bezel (7) are located opposite the (K. T. A. S.) marks of the indicator ring (12). Also disclosed are uses of the inventive timepiece for estimating the true airspeed of an aircraft.

IPC Classes  ?

• G04B 47/06 - Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece with attached measuring instruments, e.g. pedometer, barometer, thermometer, compass
• G06G 1/00 - Hand-manipulated computing devices

Abstract

The invention concerns a timepiece (1) with an integrated true airspeed indicator, which comprises a case that is closed by a glass (5) and formed of a back cover (2) and a middle part (3); a time display (6); a bezel (7) comprising a rotatable part (8) with a circular first edge (9); a time keeping circuit (10) controlling the time display (6); and at least one energy source (11) powering the time-keeping circuit (10). One preferred embodiment of the timepiece according to the invention is characterized in that the bezel (7) comprises Flight Level (F.L.) marks and Mach Number (MACH) marks that are in each case directed radial to the first edge (9) of the rotatable part (8) of the bezel (7) and that are diametrically opposed to each other. The inventive timepiece (1) comprises an indicator ring (12) with a circular first edge (13) that is concentrically arranged with and that is located close to the first edge (9) of the rotatable part (8) of the bezel (7). The fixed indicator ring (12) comprises True Air Speed (K.T.A.S.) marks and Flight Level (F.L.) marks that are in each case directed radial to the first edge (13) of the indicator ring (12) and that are diametrically opposed to each other in such a way that the (F.L.) marks of the rotatable part (8) of the bezel (7) are located opposite the (K.T.A.S.) marks of the indicator ring (12) and that the (MACH NUMBER) marks of the rotatable part (8) of the bezel (7) are located opposite the (F.L.) marks of the indicator ring (12). Also disclosed are uses of the inventive timepiece for estimating the Mach number of an aircraft.

IPC Classes  ?

• G04B 47/06 - Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece with attached measuring instruments, e.g. pedometer, barometer, thermometer, compass
• G06G 1/00 - Hand-manipulated computing devices

Abstract

The invention concerns a timepiece (1) with an integrated density altitude indicator, which comprises a case that is closed by a glass (5) and formed of a back cover (2) and a middle part (3); a time display (6); a bezel (7) comprising a ro- tatable part (8) with a circular first edge (9); a time keeping circuit (10) controlling the time display (6); and at least one energy source (11) powering the time-keeping circuit (10). One preferred embodiment of the timepiece according to the invention is characterized in that the bezel (7) comprises field elevation (ELEVATION) marks and Outside Air Temperature (O.A.T.) marks that are in each case directed radial to the first edge (9) of the rotatable part (8) of the bezel (7) and that are diametrically opposed to each other. The inventive timepiece (1) comprises an indicator ring (12) with a circular first edge (13) that is concentrically arranged with and that is located close to the first edge (9) of the rotatable part (8) of the bezel (7). The fixed indicator ring (12) comprises Outside Air Temperature (O.A.T.) marks and density altitude (DENSITY AIt.) marks that are in each case directed radial to the first edge (13) of the indicator ring (12) and that are diametrically opposed to each other in such a way that the (ELEVATION) marks of the rotatable part (8) of the bezel (7) are located opposite the (O.A.T.) marks of the indicator ring (12) and that the (O.A.T.) marks of the rotatable part (8) of the bezel (7) are located opposite the (DENSITY Alt.) marks of the indicator ring (12). Also disclosed are uses of the inventive timepiece for estimating the density altitude of an air field.

IPC Classes  ?

• G04G 21/02 - Detectors of external physical values, e.g. temperature
• G06G 1/00 - Hand-manipulated computing devices
• G04B 47/06 - Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece with attached measuring instruments, e.g. pedometer, barometer, thermometer, compass
• G01C 5/06 - Measuring heightMeasuring distances transverse to line of sightLevelling between separated pointsSurveyors' levels by using barometric means