Patent US4137173A successfully refreshed from Google Patents.
US4137173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trap for grease or other foreign matter dissolved or entrained in a liquid
Assignee: Individual
•
Filing: 1976-12-01
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Granted: 1979-01-30
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Expires: 1996-12-01
Abstract
Abstract A trap for grease or other foreign matter dissolved or entrained in a liquid comprises a housing containing a chamber for receiving the liquid to be treated, a turbulence reducing channel for conducting the liquid from the chamber to a settling tank, a cage for trapping trash as the liquid enters the tank, a grease collector at the normal surface level of the liquid in the tank, a trap for collecting sediment at the base of the tank and an outlet for draining decontaminated liquid from the tank. The outlet may be in communication with a liquid seal and means may be provided to syphon the liquid from the settling tank. Means may also be provided to cool the liquid in the housing. The housing is in modular form which is preferably segmental in plan. An assembly of such modules may be constructed with a common outlet in the shape of an all but complete circle or polygon. In this way access may easily be gained to the trap for servicing, maintenance and repairs. In addition weirs are provided between adjacent modules to ensure a balanced control of liquid being treated.
Inventors
- 👤 Cyril L. Jarvis
- 👤 Laurence Ayers
- 👤 Trevor Hewitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:07
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/009; B01D21/0006; B01D21/10; B01D21/24; B01D21/2405; B01D21/2427; B01D21/2433; B01D21/245; B01D21/2483; B01D2221/00; B01D2221/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
178 words
A trap for grease or other foreign matter dissolved or entrained in liquids, comprising a chamber disposed about the periphery of said trap, at least one port to admit liquid into the upper portion of said chamber; a central settling tank encompassed by said chamber; said chamber having a bottom wall that inclines downwardly inwardly towards said settling tank for conducting the liquid from said chamber to an inlet to the settling tank, thereby to reduce the turbulence of the liquid as it is conducted from said chamber to said settling tank; said trap being segmental in plan and being comprised of a plurality of mutually separable segments each of which includes a portion of said chamber and a portion of said settling tank, overflow weirs in each segment providing limited fluid communication between adjacent said portions of said chamber, said weirs being of such a height that excess liquid in any chamber portion will overflow said weirs before overflowing out of said trap, and an outlet constructed and arranged for removing decontaminated liquid from said settling tank.
Claim 2
Dependent Claim
178 words
A trap for grease or other foreign matter dissolved or entrained in liquids, comprising a chamber disposed about the periphery of said trap, at least one port to admit liquid into the upper portion of said chamber; a central settling tank encompassed by said chamber; said chamber having a bottom wall that inclines downwardly inwardly towards said settling tank for conducting the liquid from said chamber to an inlet to the settling tank, thereby to reduce the turbulence of the liquid as it is conducted from said chamber to said settling tank; said trap being segmental in plan and being comprised of a plurality of mutually separable segments each of which includes a portion of said chamber and a portion of said settling tank, overflow weirs in each segment providing limited fluid communication between adjacent said portions of said chamber, said weirs being of such a height that excess liquid in any chamber portion will overflow said weirs before overflowing out of said trap, and an outlet constructed and arranged for removing decontaminated liquid from said settling tank.
Claim 3
Dependent Claim
16 words
A trap according to claim 1 having a removable grease collector housed within the settling tank.
Claim 4
Dependent Claim
52 words
A trap according to claim 1 wherein the liquid outlet is located at the base of the settling tank and is in communication with a liquid seal contained in a baffle which houses the inlet and upper end zone of a discharge pipe used for conducting the decontaminated liquid to a drain.
Claim 5
Dependent Claim
29 words
A trap according to claim 3 wherein the baffle is a hollow tube the bore of which is adapted to be occluded to prevent the escape of foul gases.
Claim 6
Dependent Claim
75 words
A trap according to claim 3 wherein the baffle is cylindrical, its bore being occluded by a syphonic bell movable within the baffle between a first position at which it is substantially clear of the inlet of the discharge pipe and a second position at which it is juxtaposed the inlet to form a syphon which causes liquid to be syphoned from the settling tank down the discharge pipe through its outlet to the drain.
Claim 7
Dependent Claim
21 words
A trap according to claim 1 which includes penstocks to control the inlet to and the outlet from the settling tank.
Claim 8
Dependent Claim
16 words
A trap according to claim 1 which includes means to cool the liquid in the trap.
Claim 9
Dependent Claim
11 words
A trap according to claim 1 wherein said chamber is annular.
Claim 10
Dependent Claim
44 words
A trap according to claim 1 wherein said bottom wall of each said chamber portion is gradually and progressively inclined downwardly toward said inlet to the settling tank about a portion of the periphery of the trap so as to form a ramp glide.
Claim 11
Dependent Claim
16 words
A trap according to claim 1, in which said outlet is common to all said segments.
Claim 12
Dependent Claim
22 words
A trap as claimed in claim 1, in which said segments are arranged to describe in plan an all but complete figure.
Claim 13
Dependent Claim
30 words
A trap as claimed in claim 11, in which said segments are all substantially the same size except for one segment which is half the size of the other segments.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |