Speed compensating Pitot tube apparatus

Details Speed compensating Pitot tube apparatus Speed compensating Pitot tube apparatus

1976-10-26

1978-01-31

Ruehl, Charles A.

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G01C 2110

Patent

active

040709094

ABSTRACT:
A Pitot tube apparatus for actuating a marine speedometer includes a body member pivotally secured to a housing. An impact pressure-transmitting tube extends through the body member and is connected to the housing. The housing defines a pressure and surge chamber. Positioned within the chamber is a piston having a face which engages the body member. The pressure chamber is also connected to the marine speedometer. As the Pitot tube apparatus is pulled through the water, the force exerted on the body member by the water tends to rotate the body member but is compensated by the opposing force exerted by the piston on the body member. As a result, the body member is maintained at substantially the same position regardless of boat speed yet still may be pivoted upwardly if it encounters an obstacle.

REFERENCES:
patent: 3217535 (1965-11-01), Taylor et al.
patent: 3975959 (1976-08-01), Larkin

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