Pneumatic motor unit with integrated voltage generating means
First Claim
1. A pneumatic motor unit comprising:
- a housing;
a rotation motor which generates a pulsating exhaust air outlet flow;
a pressure air inlet passage;
an exhaust air outlet passage;
a voltage depending device which communicates signals in response to at least one of an actual motor condition and operation parameter values; and
a voltage generating section connected to said voltage depending device;
wherein said voltage generating section comprises a piezoelectric element which is provided in the exhaust air outlet passage and which is arranged to be exposed to pressure pulses of the pulsating exhaust air outlet flow from the motor to thereby generate an electric voltage, and an electric circuitry which is connected to said piezoelectric element and which communicates said electric voltage to said voltage depending device.
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Accused Products
Abstract
A pneumatic motor unit includes a housing with an air inlet passage, an exhaust air outlet passage, and a rotation motor which generates a pulsating exhaust air outlet flow. The motor unit further includes a voltage depending device which communicates signals in response to at least one of an actual motor condition and operation parameter values, and a voltage generating section which is connected to the voltage depending device and which includes a piezoelectric element provided in the exhaust air outlet passage and arranged to be activated by pressure pulses of the pulsating exhaust air outlet flow from the motor. The piezoelectric element is tongue shaped and rigidly secured at one end, and is arranged to be swung in a two-way movement relative to a central rest position to thereby generate an alternating current voltage.
9 Citations
8 Claims
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1. A pneumatic motor unit comprising:
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a housing; a rotation motor which generates a pulsating exhaust air outlet flow; a pressure air inlet passage; an exhaust air outlet passage; a voltage depending device which communicates signals in response to at least one of an actual motor condition and operation parameter values; and a voltage generating section connected to said voltage depending device; wherein said voltage generating section comprises a piezoelectric element which is provided in the exhaust air outlet passage and which is arranged to be exposed to pressure pulses of the pulsating exhaust air outlet flow from the motor to thereby generate an electric voltage, and an electric circuitry which is connected to said piezoelectric element and which communicates said electric voltage to said voltage depending device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification