Covered bubbler head for a drinking fountain
A protective cover is provided for substantially enclosing and protecting a bubbler head of a drinking fountain or the like against contamination when water flow to the bubbler head is turned off. In one preferred form, when the water flow is turned on, the protective cover is hydraulically elevated or pops up to a raised position permitting substantially unimpeded projection of a water stream from the bubbler head for drinking, etc. In an alternative preferred form, the bubbler head is hydraulically elevated or pops to a raised position within a stationary protective cover when the water supply is turned on for substantially unimpeded projection of water stream from the bubbler head through an open flow port formed in the cover.
1. In a drinking fountain adapted for connection to a supply of water under pressure and including a bubbler head body having a discharge port for outward projection of a water stream therefrom upon connection to the pressurized water supply, and a control valve for selectively turning the fountain on and off by respectively connecting and disconnecting the pressurized water supply from the bubbler head body, the improvement comprising:
a protective cover having a generally inverted cup-shaped configuration, said protective cover having said bubbler head slidably carried therein for relative sliding displacement therebetween; and
means for hydraulically displacing said bubbler head body relative to said cover from a retracted position to an elevated position when the fountain is turned on to expose the bubbler head discharge port for substantially unimpeded outward water stream projection, said bubbler head body displacing relative to said cover from said elevated position back to said retracted position when the fountain is turned off whereby said cover substantially overlies and conceals said bubbler head discharge port.
2. The improvement of claim 1 wherein said bubbler head discharge port is oriented for laterally outward projection of the water stream.
3. The improvement of claim 1 wherein said bubbler head comprises a piston body having said bubbler head discharge port formed therein, and said hydraulic displacing means comprises a pressure chamber formed in said cover for connection to the pressurized water supply when the fountain is turned on, said bubbler head piston body being slidably mounted within said pressure chamber, whereby said piston body is movably displaced within said pressure chamber when the fountain is turned on for displacing said piston body from said retracted position to said elevated position, said bubbler head discharge port being aligned with a flow port formed in said cover when the fountain is turned on and misaligned with said flow port when the fountain is turned off.
4. The improvement of claim 3 further including a guide rod on said cover slidably carried within a guide bore formed in said piston body for guiding said piston body between said elevated and retracted positions.
5. The improvement of claim 3 further including at least one bleed port for bleeding pressurized water from said pressure chamber when the fountain is turned off.
6. The improvement of claim 5 wherein said at least one bleed port is formed in said cover.
7. A covered bubbler head unit for use in a drinking fountain adapted for connection to a supply of water under pressure and including a control valve for selectively turning the fountain on and off, said covered bubbler head unit comprising:
a bubbler head having a discharge port formed therein for outward projection of a water stream therefrom when the fountain is turned on;
a protective cover having a generally inverted cup-shaped configuration, said protective cover having said bubbler head slidably mounted therein for displacement between an elevated position exposing said bubbler head discharge port through a flow port formed in said cover for substantially unimpeded outward projection of the water stream therefrom, and a retracted position with said bubbler head discharge port misaligned with said cover flow port; and
said cover having a pressure chamber formed therein for connection to the pressurized water supply when the fountain is turned on, and said bubbler head including a piston body slidably mounted within said pressure chamber, whereby said piston body is movably displaced within said pressure chamber when the fountain is turned on for displacing said bubbler head from said retracted position to said elevated position, and whereby said piston body is movably displaced when the fountain is turned off from said elevated position to said retracted position.
8. The bubbler head unit claim 7 further including at least one bleed port for bleeding pressurized water from said pressure chamber when the fountain is turned off.