초록

A service valve for a CO2 refrigerant based air conditioning system in a vehicle. The service valve includes a dynamic seal that is opened and closed during servicing of the air conditioning system. The dynamic seal provides for good overall sealing as well as good permeation resistance.

대표청구항 ▼

A service valve for a CO2 refrigerant based air conditioning system in a vehicle. The service valve includes a dynamic seal that is opened and closed during servicing of the air conditioning system. The dynamic seal provides for good overall sealing as well as good permeation resistance. switch bein

A service valve for a CO2 refrigerant based air conditioning system in a vehicle. The service valve includes a dynamic seal that is opened and closed during servicing of the air conditioning system. The dynamic seal provides for good overall sealing as well as good permeation resistance. switch being configured to activate said requestable mechanism; and a second switch coupled to said control panel, said second switch being configured to activate a visual indicator, wherein said at least one manually operable control is coupled to said first switch when said requestable mechanism is present in said aircraft and wherein said at least one manually operable control is coupled to said second switch when said requestable mechanism is absent from said aircraft. 2. The apparatus of claim 1 further comprising a display panel coupled to said control panel via said second switch, said display panel being configured to display said visual indicator. 3. The apparatus of claim 1 wherein said at least one manually operable control comprises a switch. 4. The apparatus of claim 1 wherein said at least one manually operable control comprises a knob. 5. The apparatus of claim 1 wherein said at least one manually operable control comprises a button. 6. The apparatus of claim 1 wherein said visual indicator comprises an illuminated message on a display panel. 7. The apparatus of claim 1 wherein said visual indicator comprises a flashing light on a display panel. 8. An aircraft apparatus comprising: an aircraft control panel; a plurality of manually operable controls housed in said aircraft control panel; a plurality of switches coupled to said control panel, wherein a first switch of said plurality of switches is configured to activate at least one requestable mechanism, and wherein a second switch of said plurality of switches is configured to activate at least one visual indicator, wherein at least one of said plurality of manually operable controls is coupled to said first switch when said requestable mechanism is present in said aircraft and wherein said at least one of said plurality of manually operable controls is coupled to said second switch of said plurality of switches when said requestable mechanism is absent from said aircraft; and a display panel coupled to said control panel via said second switch of said plurality of switches, said display panel being configured to display said at least one visual indicator. 9. The apparatus of claim 8 wherein said at least one manually operable control comprises a switch. 10. The apparatus of claim 8 wherein said at least one manually operable control comprises a knob. 11. The apparatus of claim 8 wherein said at least one manually operable control comprises a button. 12. The apparatus of claim 8 wherein said at least one visual indicator comprises a flashing light displayed on said display panel. 13. The apparatus of claim 8 wherein said at least one visual indicator comprises an illuminated message on a display panel. 14. A method of indicating when a requestable mechanism in an aircraft is not present in an aircraft comprising the steps of: actuating a manually operable control on a control panel; activating said requestable mechanism if said requestable mechanism is installed in said aircraft; and activating a visual indicator to indicate the absence of said requestable mechanism if said requestable mechanism is not installed in said aircraft. 15. The method of claim 14 wherein said manually operable control comprises a switch. 16. The method of claim 14 wherein said manually operable control comprises a knob. 17. The method of claim 14 wherein said manually operable control comprises a button. 18. The method of claim 14 wherein said visual indicator comprises an illuminated message on a display panel. 19. The method of claim 14 wherein said visual indicator comprises a flashing light on a display panel.