Device and method to control and/or regulate a pressure level
First Claim
1. A device for controlling and/or regulating the pressure level of at least one volume variable recipient of a motor vehicle seat pneumatic system having a static admission pressure, the device comprising a closed system communicating with the recipient so that the closed system and the recipient contain a working fluid, the closed system including a volume adjusting element adjusted to a defined zero setting, the volume adjusting element operably increasing or reducing the pressure in the recipient in a reversible manner by selectively decreasing and increasing the volume of the closed system, the system having an inlet with a pump that feeds a corresponding quantity of working fluid to the volume adjusting element and achieving initial static pressurization of the working fluid prior to active dynamic pressurization of the system, the dynamic pressurization increased or decreased with no losses in working fluid and the pump no longer feeding any working fluid to the recipient.
1 Assignment
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Accused Products
Abstract
A device to control and/or regulate the pressure level of at least one volume variable recipient (10, 12) of a pneumatic system, in particular a pneumatic system for a motor vehicle seat (14). Means (24, 26) make it possible to increase or reduce the pressure in the recipient (10, 12) in a reversible manner. In addition, a method to control and/or regulate the pressure level of at least one volume variable recipient (10, 12) of a pneumatic system, in particular a pneumatic system for a motor vehicle seat (14). The method varies the pressure level in the recipient (10, 12) by volume changes in a volume-adjusting element (24, 26) allocated to the recipient.
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Citations
19 Claims
- 1. A device for controlling and/or regulating the pressure level of at least one volume variable recipient of a motor vehicle seat pneumatic system having a static admission pressure, the device comprising a closed system communicating with the recipient so that the closed system and the recipient contain a working fluid, the closed system including a volume adjusting element adjusted to a defined zero setting, the volume adjusting element operably increasing or reducing the pressure in the recipient in a reversible manner by selectively decreasing and increasing the volume of the closed system, the system having an inlet with a pump that feeds a corresponding quantity of working fluid to the volume adjusting element and achieving initial static pressurization of the working fluid prior to active dynamic pressurization of the system, the dynamic pressurization increased or decreased with no losses in working fluid and the pump no longer feeding any working fluid to the recipient.
- 9. A method to control and/or regulate the pressure level of at least one volume variable recipient of a motor vehicle seat pneumatic system having a static admission pressure, the method comprising providing a closed system employing a working fluid communicating with the recipient, the closed system including a volume adjusting element adjusted to define a zero setting, the volume adjusting element operably varying the pressure level in the recipient by increasing and decreasing the volume of the working fluid of the closed system, the system having an inlet with a pump that feeds a corresponding quantity of working fluid to the volume adjusting element and achieving initial static pressurization of the working fluid prior to active dynamic pressurization of the system, the dynamic pressurization increased or decreased with no losses in working fluid and the pump no longer feeding any working fluid to the recipient.
- 12. A seat for a motor vehicle, the seat comprising at least one volume variable recipient of a pneumatic system having a static admission pressure, and a device for controlling and/or regulating the pressure level of the recipient, the device comprising a closed system communicating with the recipient so that the closed system and the recipient contain a working fluid, the closed system including a volume adjusting element adjusted to a defined zero setting, the volume adjusting element operably increasing or reducing the pressure in the recipient in a reversible manner by selectively decreasing and increasing the volume of the closed system, the system having an inlet with a pump that feeds a corresponding quantity of working fluid to the volume adjusting element and achieving initial static pressurization of the working fluid prior to active dynamic pressurization of the system, the dynamic pressurization increased or decreased with no losses in working fluid and the pump no longer feeding any working fluid to the recipient.
Specification