Abstract: An exit opening (78) in a cartridge (22) is alignable with an opening (48) in a housing (32) for communication to an external drain. The cartridge and the housing have positions of final secured and initial unsecured interconnections, when openings (78, 48) are respectively aligned and unaligned. A lever (52) is swivelably secured to the housing bottom wall (46), whose cap (54) can close housing exit tube (28); a projection (56) is engageable with the cartridge for effecting the closure when the housing and cartridge openings (48, 78) are not aligned. Three L-shaped keyways (60) in the housing interior mate with three keyways (82) in the cartridge, and have corrugated surfaces to provide a ratcheted secure connection between the cartridge and the housing when in the secure connection. A tool (92) is used to insert and to remove the cartridge into and from the housing.

Abstract: 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 as by making the liquid flow path (22A, 22B) substantially horizontal as a departure from conventional practice of substantially vertical flow and by positioning a barrier (40) above the oil sealant to prevent direct impingement of urine or other waste products onto the sealant. The trap is thus structured to realize the substantially horizontal liquid flow path and to locate the flow path immediately beneath the sealant layer or beneath a baffle portion (16B). The baffle portion may be sloped such that stray sealant droplets are encouraged to migrate upwardly to the upper surface of the flow path due to their buoyancy and, therefore, the stray droplets will be recaptured and returned to the main sealant layer.

Abstract: An exit opening (78) in a cartridge (22) is alignable with an opening (48) in a housing (32) for communication to an external drain. The cartridge and the housing have positions of final secured and initial unsecured interconnections, when openings (78, 48) are respectively aligned and unaligned. A lever (52) is swivelably secured to the housing bottom wall (46), whose cap (54) can close housing exit tube (28); a projection (56) is engageable with the cartridge for effecting the closure when the housing and cartridge openings (48, 78) are not aligned. Three L-shaped keyways (60) in the housing interior mate with three keyways (82) in the cartridge, and have corrugated surfaces to provide a ratcheted secure connection between the cartridge and the housing when in the secure connection. A tool (92) is used to insert and to remove the cartridge into and from the housing.

Abstract: An odor trap apparatus (20) includes a housing (32) having an interior and an opening (48) extending from the interior to the external drain, and a cartridge (22). The cartridge has an exit opening (78) disposed to communicate with the housing opening. The cartridge and the housing have positions of final secured interconnection, when openings (26, 48) are aligned, and of initial unsecured interconnection, when their openings are not aligned. A lever (52) is swivelably secured to the housing bottom wall (46), and has a cap (54) for closing the housing exit tube (28) and a projection (56) engageable with the cartridge for effecting the closure when the housing opening (48) is not aligned with the cartridge exit opening (78). Three L-shaped keyways (60) in the housing interior are adapted to mate with three keyways (82) in the cartridge, and have corrugated surfaces to provide a ratcheted secure connection between the cartridge and the housing when in the secure orientation.

Abstract: 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 as by making the liquid flow path (22A, 22B) substantially horizontal as a departure from conventional practice of substantially vertical flow and by positioning a barrier (40) above the oil sealant to prevent direct impingement of urine or other waste products onto the sealant. The trap is thus structured to realize the substantially horizontal liquid flow path and to locate the flow path immediately beneath the sealant layer or beneath a baffle portion (16B). The baffle portion may be sloped such that stray sealant droplets are encouraged to migrate upwardly to the upper surface of the flow path due to their buoyancy and, therefore, the stray droplets will be recaptured and returned to the main sealant layer.

Abstract: 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 as by making the liquid flow path (22A, 22B) substantially horizontal as a departure from conventional practice of substantially vertical flow and by positioning a barrier (40) above the oil sealant to prevent direct impingement of urine or other waste products onto the sealant. The trap is thus structured to realize the substantially horizontal liquid flow path and to locate the flow path immediately beneath the sealant layer or beneath a baffle portion (16B). The baffle portion may be sloped such that stray sealant droplets are encouraged to migrate upwardly to the upper surface of the flow path due to their buoyancy and, therefore, the stray droplets will be recaptured and returned to the main sealant layer.

Abstract: 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 as by making the liquid flow path (22A, 22B) substantially horizontal as a departure from conventional practice of substantially vertical flow and by positioning a barrier (40) above the oil sealant to prevent direct impingement of urine or other waste products onto the sealant. The trap is thus structured to realize the substantially horizontal liquid flow path and to locate the flow path immediately beneath the sealant layer or beneath a baffle portion (16B). The baffle portion may be sloped such that stray sealant droplets are encouraged to migrate upwardly to the upper surface of the flow path due to their buoyancy and, therefore, the stray droplets will be recaptured and returned to the main sealant layer.

Abstract: An odor trap apparatus (20) for conveyance of waste water to an external drain includes a housing (32) having an interior and an opening (48) extending from the interior to the external drain, and a cartridge (22) receivable in the housing interior. The cartridge has an opening (26) for receiving the wastewater, and an exit opening (78) disposed to communicate with the housing opening. The cartridge and the housing have positions of final secured interconnection, when openings (26, 48) are aligned, and and of initial unsecured interconnection, when their openings are not aligned. A lever (52) is swivelably secured to the housing bottom wall (46), and has a cap (54) for closing the housing exit tube (28) and a projection (56) engageable with the cartridge for effecting the closure when the housing opening (48) is not aligned with the cartridge exit opening (78).

Abstract: Improvements in retention of the oily liquid sealant in a oil-sealed odor trap, for drain applications such as a waterless urinal or anti-evaporation floor drain, are accomplished by making the liquid flow path substantially horizontal as a departure from conventional practice of substantially vertical flow. The trap is structured to realize the substantially horizontal liquid flow path and to locate the flow path immediately beneath the sealant layer or beneath a baffle portion that is sloped such that stray sealant droplets migrating upwardly to the upper surface of the flow path due to their buoyancy will be recaptured and returned to the main sealant layer. To accomplish substantially horizontal flow, the entry compartment can be made to have entry and exit openings substantially offset from each other.

Abstract: A waterless urinal meeting U.S. sanitation code requirements and providing advantages of cost savings, water conservation and easy maintenance is particularly beneficial in public or institutional urinal facilities. An odor trap cartridge unit is configured as a coaxial dual chamber bell trap that eliminates the need for conventional P or J type traps required in water-flushed urinals. In the odor trap, a body of oily liquid sealant, floating on a body of trapped residual urine, serves as an odor barrier but allows entering urine to immediately permeate downwardly through the sealant and proceed to a drain without requiring flushing. The odor trap is molded from two plastic parts that are assembled together to form a cartridge unit that fits readily into a receptacle cavity of urinal bowl configured for wall mounting. The cartridge stays in place by friction and gravity, and can be easily removed with a special tool.