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Class Information
Number: 137/216.1
Name: Fluid handling > Back flow prevention by vacuum breaking (e.g., anti-siphon devices) > Air vent in liquid flow line > With liquid seal in liquid flow line
Description: Apparatus including a liquid seal means in the liquid flow line.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6776183 |
Aircraft drain device |
Aug. 17, 2004 |
| 6510863 |
Dual inlet air gap |
Jan. 28, 2003 |
| 6453931 |
Combination dishwasher and reverse osmosis air gab body |
Sep. 24, 2002 |
| 6349731 |
Water inlet system for dishwasher |
Feb. 26, 2002 |
| 6189558 |
Universal port vacuum breaker adapted for mounting within the upper ends of standpipes of different sizes |
Feb. 20, 2001 |
| 6105599 |
Transporting water device |
Aug. 22, 2000 |
| 5915406 |
Air gap device for water softener system |
Jun. 29, 1999 |
| 5878603 |
Quiet water fill system |
Mar. 9, 1999 |
| 5860444 |
Air gap backflow prevention device |
Jan. 19, 1999 |
| 5713385 |
Air gap body for reverse osmosis system |
Feb. 3, 1998 |
| 5592964 |
Air gap anti-siphon System |
Jan. 14, 1997 |
| 5305778 |
Air gap apparatus |
Apr. 26, 1994 |
| 5176165 |
Air gap apparatus |
Jan. 5, 1993 |
| 5046529 |
Potable water storage system |
Sep. 10, 1991 |
| 4222405 |
Pressure vacuum breaker |
Sep. 16, 1980 |
| 4051859 |
Apparatus for draining fluid from a continuously evacuated space |
Oct. 4, 1977 |
| 4026317 |
Waterseal |
May. 31, 1977 |
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