Grease trap

Details Grease trap Grease trap

2006-04-18

2006-04-18

Upton, Christopher (Department: 1724)

Liquid purification or separation

Gravitational separator

Heavier constituent trap, chamber, or recess

C210S538000, C210S539000

Reexamination Certificate

active

07029585

ABSTRACT:
The grease trap is a device that may be attached to the drainpipe of a sink and the outlet pipe of a plumbing system to remove grease from wastewater before it enters the plumbing system. The device uses simple principles of gravity and separation of immiscible liquids to achieve this goal. Also provided with the present invention is a vent pipe to decrease the production of unpleasant odors. A covered opening is provided for removing the grease periodically.

REFERENCES:
patent: 723618 (1903-03-01), Newton
patent: 1237068 (1917-08-01), Loeb
patent: 2081215 (1937-05-01), Boosey
patent: 2348167 (1944-05-01), Ransome
patent: 2624463 (1953-01-01), Freese
patent: 3688904 (1972-09-01), Knepp
patent: 4938878 (1990-07-01), Hall
patent: 5368747 (1994-11-01), Rymal et al.
patent: 6123857 (2000-09-01), Brade
patent: 374040 (1907-06-01), None
patent: 19069 (1893-01-01), None

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