US4010101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid trap
Assignee: JACKSON HENRY D FARM SILKAATSNEK DISTRICT BRITS TRANSVAAL PROVINCE REPUBLIC
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Filing: 1976-07-19
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Granted: 1977-03-01
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Expires: 1996-07-19
Abstract
Abstract A trapping device for trapping foreign liquids having a specific gravity greater than that of a supply liquid comprises a settling chamber defined primarily by a tubular side wall and two end pieces and inlet and outlet chambers in the settling chamber and adjacent to an upper one of the end pieces. An inlet and an outlet lead to and from the inlet and outlet chambers, which are separated by an imperforate wall. The imperforate wall has a pair of wing means diverging radially outwardly. Foraminous wall means are arranged so that fluid passing through the chambers from the inlet to the outlet passes through the foraminous wall means. A pair of spaced contacts extend into the settling chamber and a float in the settling chamber having a specific gravity higher than that of the supply liquid and lower than that of the foreign liquids has a bridge member for bridging the contacts to establish an electrical path between said contacts when the float is raised to a predetermined level by floating on the foreign liquids.
Inventors
- 👤 Cyril Davey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:20
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; B01D17/08; B01D17/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
332 words
A trapping device for a liquid supply line for trapping foreign liquids contained in a supply liquid, said foreign liquids having a specific gravity greater than that of the supply liquid, the device comprising a tubular side wall having upper and lower ends, a lower end piece defining a socket releasably receiving the lower end of the side wall, an upper end piece defining a socket releasably receiving the upper end of the side wall, sealing means forming seals between the end pieces and the side wall, a settling chamber defined primarily by the side wall and the end pieces, inlet and outlet chambers in said settling chamber and adjacent to said upper end piece, an inlet leading through the upper end piece into said inlet chamber, an outlet leading through the upper end piece from said outlet chamber, a substantially imperforate wall separating said inlet and outlet chambers, said imperforate wall comprising a tubular hub and a pair of wing means at opposite sides of the hub and each diverging outwardly away from the hub, flow paths connecting said settling chamber with said inlet and outlet chambers, foraminous wall means partly defining said inlet and outlet chambers, said foraminous wall means being arranged across said flow paths whereby fluid passing through the chambers from the inlet to the outlet passes through at least one said foraminous wall means, a pair of spaced contact means extending through the upper end piece and through said wing means into the settling chamber, said contact means having connector portions outside said settling chamber and connectable to an electrical warning signal circuit, a float in the settling chamber having a specific gravity higher than that of the supply liquid and lower than that of the foreign liquids, and a bridge member on the float for bridging the space between the contact means to establish an electrical path between said contact means when the float is raised to a predetermined level by floating on the foreign liquids.
Claim 2
Dependent Claim
332 words
A trapping device for a liquid supply line for trapping foreign liquids contained in a supply liquid, said foreign liquids having a specific gravity greater than that of the supply liquid, the device comprising a tubular side wall having upper and lower ends, a lower end piece defining a socket releasably receiving the lower end of the side wall, an upper end piece defining a socket releasably receiving the upper end of the side wall, sealing means forming seals between the end pieces and the side wall, a settling chamber defined primarily by the side wall and the end pieces, inlet and outlet chambers in said settling chamber and adjacent to said upper end piece, an inlet leading through the upper end piece into said inlet chamber, an outlet leading through the upper end piece from said outlet chamber, a substantially imperforate wall separating said inlet and outlet chambers, said imperforate wall comprising a tubular hub and a pair of wing means at opposite sides of the hub and each diverging outwardly away from the hub, flow paths connecting said settling chamber with said inlet and outlet chambers, foraminous wall means partly defining said inlet and outlet chambers, said foraminous wall means being arranged across said flow paths whereby fluid passing through the chambers from the inlet to the outlet passes through at least one said foraminous wall means, a pair of spaced contact means extending through the upper end piece and through said wing means into the settling chamber, said contact means having connector portions outside said settling chamber and connectable to an electrical warning signal circuit, a float in the settling chamber having a specific gravity higher than that of the supply liquid and lower than that of the foreign liquids, and a bridge member on the float for bridging the space between the contact means to establish an electrical path between said contact means when the float is raised to a predetermined level by floating on the foreign liquids.
Claim 3
Dependent Claim
62 words
A trapping device according to claim 1, wherein a shank passing through the tubular hub and the settling chamber connects the end pieces, the shank having a threaded end screwed into one of the end pieces and a head adapted to be gripped manually for screwing the threaded end of the shank into and out of said one of the end pieces.
Claim 4
Dependent Claim
81 words
A trapping device according to claim 2, wherein said foraminous wall means and said imperforate wall form part of a cage at least partly defining the inlet and outlet chambers, the cage having an end wall spaced from the upper end piece, wherein a stop element is provided on each contact means, and wherein a spring encircles each contact means and presses against the stop element thereon, the spring biassing the end wall of the cage towards the upper end piece.
Claim 5
Dependent Claim
46 words
A trapping device according to claim 3, wherein the foraminous wall means each form part of a substantially cylindrical wall of said cage, wherein the tubular side wall is substantially cylindrical, and wherein an annular cavity is defined between the cage and the tubular side wall.
Claim 6
Dependent Claim
30 words
A trapping device according to claim 4, wherein a groove is formed in each contact means and wherein each stop element is a spring clip seated in a respective groove.
Claim 7
Dependent Claim
33 words
A trapping device according to claim 5, wherein a drain outlet valve is provided in the lower end piece for draining the settling chamber, the drain outlet valve being a manually operable valve.
Claim 8
Dependent Claim
306 words
A trapping device for containing a supply liquid and foreign liquids from a supply liquid, said foreign liquids having a specific gravity greater than that of the supply liquid, the device comprising a tubular side wall having upper and lower ends, a lower end piece containing a sealing ring and defining a socket for sealingly and releasably receiving the lower end of the side wall, an upper end piece containing a sealing ring and defining a socket for sealingly and releasably receiving the upper end of the side wall, a settling chamber defined by the side wall and the end pieces, a float in the settling chamber having a specific gravity higher than that of the supply liquid for floating only on the foreign liquids, inlet and outlet chambers in said settling chamber and adjacent to said upper end piece, an inlet leading into said inlet chamber, an outlet leading from said outlet chamber, a shank passing through the tubular hub, the settling chamber and the float and connecting the end pieces, the shank having a threaded end screwed into one of the end pieces and a head adapted to be gripped manually for screwing the threaded end of the shank into and out of said one of the end pieces, an imperforate wall having a bore receiving said shank, said wall comprising a pair of wall elements each diverging outwardly away from the shank and separating said inlet and outlet chambers, foraminous wall means partly defining said inlet and outlet chambers whereby fluid passing through the chambers from the inlet to the outlet passes through at least one foraminous wall means, spaced contacts extending through the upper end piece into the settling chamber, said contacts having electrical terminals outside the settling chamber, and means for bridging the contact means and establishing an electrical path therebetween.
Claim 9
Dependent Claim
306 words
A trapping device for containing a supply liquid and foreign liquids from a supply liquid, said foreign liquids having a specific gravity greater than that of the supply liquid, the device comprising a tubular side wall having upper and lower ends, a lower end piece containing a sealing ring and defining a socket for sealingly and releasably receiving the lower end of the side wall, an upper end piece containing a sealing ring and defining a socket for sealingly and releasably receiving the upper end of the side wall, a settling chamber defined by the side wall and the end pieces, a float in the settling chamber having a specific gravity higher than that of the supply liquid for floating only on the foreign liquids, inlet and outlet chambers in said settling chamber and adjacent to said upper end piece, an inlet leading into said inlet chamber, an outlet leading from said outlet chamber, a shank passing through the tubular hub, the settling chamber and the float and connecting the end pieces, the shank having a threaded end screwed into one of the end pieces and a head adapted to be gripped manually for screwing the threaded end of the shank into and out of said one of the end pieces, an imperforate wall having a bore receiving said shank, said wall comprising a pair of wall elements each diverging outwardly away from the shank and separating said inlet and outlet chambers, foraminous wall means partly defining said inlet and outlet chambers whereby fluid passing through the chambers from the inlet to the outlet passes through at least one foraminous wall means, spaced contacts extending through the upper end piece into the settling chamber, said contacts having electrical terminals outside the settling chamber, and means for bridging the contact means and establishing an electrical path therebetween.
Claim 10
Dependent Claim
50 words
A trapping device according to claim 7, including a generally cylindrical cage formed partly by said foraminous wall means and containing the inlet and outlet chambers, the tubular side wall being of substantially circular cross section and an annular cavity being defined between the cage and the tubular side wall.
Claim 11
Dependent Claim
47 words
A trapping device according to claim 8, wherein a seating groove is formed in each contact, wherein a spring clip is seated in each said groove, and wherein a spring encircles each contact and presses against the cage to bias the cage against the upper end piece.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |