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 with a substantially closed upper end, said protective cover slidably carried on said bubbler head body and having said bubbler head body mounted therein for relative sliding displacement therebetween; and
means for hydraulically displacing said cover relative to said bubbler head body to an elevated position when the fountain is turned on to expose the bubbler head discharge port for substantially unimpeded outward water stream projection, and for displacing said cover relative to said bubbler head body to a 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 body includes a radially outwardly projecting rim formed thereon for supporting a lower marginal edge of said cover in said retracted position.
3. The improvement of claim 1 wherein said hydraulic displacing means comprises a pressure chamber formed in said bubbler head body for connection to the pressurized water supply when the fountain is turned on, and a piston carried by said protective cover and slidably mounted within said pressure chamber, whereby said piston is movably displaced within said pressure chamber when the fountain is turned on for displacing said cover from said retracted position to said elevated position.
4. The improvement of claim 3 wherein said piston comprises an upper seal member and a lower float carried thereby within said pressure chamber.
5. The improvement of claim 3 further including a piston rod connecting said piston to said cover.
6. 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.
7. The improvement of claim 6 wherein said at least one bleed port is formed in said body.
8. The improvement of claim 3 wherein said bubbler head discharge port is disposed in flow communication with said pressure chamber, and further including a flow restrictor carried by said bubbler head generally at said discharge port therein for maintaining a minimum threshold pressure within said pressure chamber when the fountain is turned on.
9. The improvement of claim 1 wherein said bubbler head discharge port is oriented for laterally outward projection of the water stream.
10. 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 being slidably mounted on said bubbler head for relative sliding displacement between an elevated position exposing said bubbler head discharge port for substantially unimpeded outward projection of the water stream therefrom, and a retracted position overlying and substantially concealing said bubbler head discharge port; and
said bubbler head having a pressure chamber formed therein for connection to the pressurized water supply when the fountain is turned on, and a piston carried by said protective cover and slidably mounted within said pressure chamber, whereby said piston is movably displaced within said pressure chamber when the fountain is turned on for displacing said cover from said retracted position to said elevated position, and whereby said piston is movably displaced when the fountain is turned off from said elevated position to said retracted position.
11. The bubbler head unit of claim 10 wherein said bubbler head includes a radially outwardly projecting rim formed thereon for supporting a lower marginal edge of said cover in said retracted position.
12. The bubbler head unit of claim 10 further including a piston rod connecting said piston to said cover.
13. The bubbler head unit claim 10 further including at least one bleed port for bleeding pressurized water from said pressure chamber when the fountain is turned off.
14. The bubbler head unit of claim 10 wherein said bubbler head discharge port is disposed in flow communication with said pressure chamber, and further including a flow restrictor carried by said bubbler head generally at said discharge port therein for maintaining a minimum threshold pressure within said pressure chamber when the fountain is turned on.
15. The bubbler head unit of claim 10 wherein said piston comprises an upper seal member and a lower float carried thereby within said pressure chamber.