Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7302964 | Housing for a liquid seal vacuum and pressure relief valve apparatus A housing and a method of using a liquid for controlling vapor flow through a valve apparatus between a canister and atmospheric conditions. The housing includes a container and a first partition that projects from the housing into the liquid and divides the vapor c... | 12/04/2007 |
| 7155760 | Waste trap A waste trap 10 for use in plumbing installations is provided, the trap comprising a unitary metal body 12 defining an interior volume, and having a tubular plastics insert 20 located in an inlet 14 of the body 12 and extending int... | 01/02/2007 |
| 6973938 | Liquid column pressure and vacuum vent A pressure and vacuum vent utilizing a column of liquid to open and close the vent at predetermined pressure and vacuum levels. A column of liquid is constrained in connection with internal and external passages coupled between a pair of expansion chambers. The exte... | 12/13/2005 |
| 6959723 | Oil sealant-preserving drain odor trap Improvements in retention of the oily liquid sealant (20) in a oil-sealed odor trap (10B-10M), for drain applications such as a waterless urinal or anti-evaporation floor drain, are accomplished by minimizing turbulence in the oil sealant, such ... | 11/01/2005 |
| 6915814 | Transparent pipe trap with means of enhancing the biodegradation of sink effluents A transparent pipe trap with means of enhancing the biodegradation of sink effluents in a household sink uses a screen located “downstream” from the trap to deflect valuable items into the trap. The trap is easily drained and easily removed, for convenient retri... | 07/12/2005 |
| 6701541 | Odor trap for a waterless urinal An odor trap having a cup-shaped housing, which has an inlet located on an upper end and an outlet on a lower end leading into a drain line. A siphon blocks the passage of gas from the outlet to the inlet. A urine collector is configured in the shape of a... | 03/09/2004 |
| 6192915 | Sewerage inlet Sewerage inlet having a grating (3), a foliage-retaining basin (4) arranged below said grating (3) and a container provided with an outflow pipe (6) in which container a valve (10) controlled by a float is arranged upstream of the outflow pipe (6) and clo... | 02/27/2001 |
| 5941273 | Drain trap apparatus A trap apparatus associated with a drain comprising a fluid inlet, a first chamber, second chamber, a fluid outlet and a structure for retaining fluid. The fluid inlet is capable of accepting in flowing fluid. The first chamber member is associated with t... | 08/24/1999 |
| 5159724 | Spill free clean out traps A spill free clean out type sink trap includes a cover sealingly and detachably mounted on a container and, in one embodiment, respective individual inlet and outlet conduits are spaced apart laterally from one another. The conduits both project downwardl... | 11/03/1992 |
| 5095553 | Spill free clean out trap A spill free cleanout type sink trap that includes a cover sealingly and detachably mounted on a container and respective individual inlet and outlet conduits spaced apart laterally from one another. In one embodiment the conduits both project downwardly ... | 03/17/1992 |
| 4681131 | Liquid closing device A device for closing a transport duct for a liquid with the aid of said liquid, for example, a siphon, said device mainly comprising a housing (1) with a liquid chamber, a tube stub (4) connected in airtight manner with said housing (1) and reaching at th... | 07/21/1987 |
| 4655242 | Water seal drum An improved water seal drum for gas comprising a vessel containing seal water, a gas introducing pipe extending downward from the upper part of the vessel, the lower end of the pipe opening beneath the water level, and a gas discharging pipe at the top of... | 04/07/1987 |
| 4594740 | Sink trap assembly A sink trap assembly includes an upper vertical tubular part having a side wall with a tubular outlet securable to a horizontal outlet pipe. The upper part also has an open upper end and a lower open end to enable the tubular part to be installed by upwar... | 06/17/1986 |
| 4432384 | Sewer fluid trap A sewer fluid trap is disclosed, consisting of firstly a rigid flat plate permanently secured to a manhole wall surrounding a sewer pipe outlet. This flat plate has a pair of spaced-apart lateral slots. Secondly, an elbow having a lower end submerged in t... | 02/21/1984 |
| 4275760 | Trap-type drain with built-in strainer A drain trap has a housing in the form of a four-sided outer vessel with a closed bottom and with a lateral outlet extending from one of its sides, this housing receiving an insert which forms a closed-bottom inner vessel of downwardly converging frustopy... | 06/30/1981 |
| 4212314 | Waste water outlet sanitary plant comprising a siphon The present invention relates to a waste water outlet sanitary plant comprising a siphon forming a water seal to which is connected a waste pipe for connection with sewers and in which an automatic air valve device and a siphon are combined in one single ... | 07/15/1980 |
| 4158897 | Siphon In a siphon for lavatory basins and the like, of the kind comprising a main body having an upper inlet opening, a lateral outlet opening and an open lower end closed by a removable socket, the socket is disposed obliquely at an acute angle to the vertical... | 06/26/1979 |
| 4051859 | Apparatus for draining fluid from a continuously evacuated space Apparatus for permitting drainage of fluids from an evacuated space is disclosed to comprise a casing having a fluid inlet pipe, a drain fitting and a gas by-pass fitting. The fluid inlet pipe extends within a chamber defined by the apparatus body to a po... | 10/04/1977 |
