Cesspool

• US 5,249,398 A
• Filed: 11/14/1991
• Issued: 10/05/1993
• Est. Priority Date: 11/19/1990
• Status: Expired due to Term

• Current Assignee: Ab Sjobo Bruk
• Original Assignee: Ab Sjobo Bruk
• Inventors: Spanberg, Bengt
• Primary Examiner(s): Friedman, Carl D.
• Assistant Examiner(s): LENO, MATTHEW
• Application Number:
  US07/792,000
• Time in Patent Office: 691 Days
• Field of Search: 52/169.5, 52/245, 52/247, 52/19, 52/20, 210/163, 210/542, 4/287, 4/695, 4/681, 4/668
• US Class Current: 52/169.5
• CPC Class Codes: E03F 5/042 Arrangements of means against overflow of water, backing-up from the drain

Abstract

A cesspool for handling waste water passed through the cesspool to an associated drainage system has two separate odor locks for preventing the escape of odoress gas from the drainage system through the cesspool. A downwardly extending inlet member is surrounded by and protrudes downwardly into a vertically movable cup. Water held by the cup normally provides a first odor lock between the cup and the inlet member. The cup is biased upwardly and has an upper edge which is engagable with an elastic seal to provide a second odor lock. The second odor lock assures an odor seal between the inlet member and the cup even when the water in the cup falls below the level required to maintain the first odor lock.

Claims

1. Cesspool, including an upwardly open cup (16) and an inlet member (7) protruding thereinto from above in such a way that water (17) flowing through said inlet member (7) and through said cup (16) can pass into a drainage system to which the cesspool (1) is connected and whereby water (17) in said cup (16) forms a first odor lock between the drainage system and the inlet member (7), said cup (16) being movably mounted relative to a seat (19) and cooperating with at least one power generating means (20) for bringing said cup (16) into close odor sealing engagement with said seat (19) such that said cup (16) and seat (19) with each other define a second odor lock if the force applied by said water (17) to said cup (16) falls below a given value, said power generating means (20) being mounted such that it with a successively decreasing load thereon, resulting from a successively decreasing force applied by said water (17) to said cup (16), presses said cup (16) against said seat (19) with a successively increasing pressure, means mounting said cup (16) for movement relative to said seat (19) so that waste water rising in said drainage system can move said cup (16) towards said seat (19) and bring it to close engagement with said seat (19) or, if said cup (16) already engages said seat (19), can increase its engagement pressure against the seat (19) to prevent the waste water from flowing from the drainage system into said cup (16), said cup (16) having a cambered bottom (23) against which waste water rising from below said cup may press to urge said cup upwardly toward said seat (19).

2. Cesspool, including an upwardly open cup (16) and an inlet member (7) protruding thereinto from above in such a way that water (17) flowing through said inlet member (7) and through said cup (16) can pass into a drainage system to which the cesspool (1) is connected and whereby water (17) in said cup (16) forms a first odor lock between the drainage system and the inlet member (7), said cup (16) being movably mounted relative to a seat (19) and cooperating with at least one power generating means (20) for bringing said cup (16) into close odor sealing engagement with said seat (19) such that said cup (16) and seat (19) with each other define a second odor lock if the force applied by said water (17) to said cup (16) falls below a given value, said power generating means (20) being mounted such that it with a successively decreasing load thereon, resulting from a successively decreasing force applied by said water (17) to said cup (16), presses said cup (16) against said seat (19) with a successively increasing pressure, said seat (19) including a ring (25) of elastic material mounted on a portion (12) of said inlet member (7) and engaging downwardly facing support surface (24) on said inlet member (7), said ring (25) having a circumferential tongue (26) which is more yielding than other parts of the ring (25) and which forms a sealing portion for engagement by the cup (16).

3. Cesspool, including an upwardly open cup (16) and an inlet member (7) protruding thereinto from above in such a way that water (17) flowing through said inlet member (7) and through said cup (16) can pass into a drainage system to which the cesspool (1) is connected and whereby water (17) in said cup (16) forms a first odor lock between the drainage system and the inlet member (7), said cup (16) being movably mounted relative to a seat (19) and cooperating with at least one power generating means (20) for bringing said cup (16) into close odor sealing engagement with said seat (19) such that said cup (16) and seat (19) with each other define a second odor lock if the force applied by said water (17) to said cup (16) falls below a given value, said power generating means (20) being mounted such that it with a successively decreasing load thereon, resulting from a successively decreasing force applied by said water (17) to said cup (16), presses said cup (16) against said seat (19) with a successively increasing pressure, said inlet member (7) having a tubular portion (14) extending downwardly into said cup (16) and said tubular portion having a lower edge (15), said cup (16) being designed such that a gap is provided between the bottom (23) of said cup (16) and said lower edge (15) when said cup (16) engages said seat (19), said gap providing constant communication between the space inside of said tubular portion (14) and the space surrounding said tubular portion (14) when said cup (16) engages said seat (19).

4. Cesspool according to claim 3 wherein said cup (16) is supported for movement upwardly and downwardly relative to said seat (19) with said seat (19) being oriented so that upward movement of said cup relative to said seat moves said cup toward engagement with said seat and downward movement of said cup relative to said seat moves said cup away from said seat, and said power generating means (20) consists of one helical spring (27) positioned centrally relative to said cup and adapted to affect said cup with a successively increasing force in an upwards direction towards said seat (19) the farther said cup (16) is moved downwardly away from said seat (19), said helical spring being located in a sleeve (28) mounted centrally in said inlet member (7) and being threaded onto a tap (32) directed upwards in said cup and protruding into said sleeve (28) from below, said spring having a bottom end which engages a support surface (33) on said sleeve (28) and also having an upper end which engages a support surface (34a) fixed relative to said tap (32) with said spring being compressed between said support surfaces (33 and 34 a), said sleeve (28) having a stop surface which is adapted to limit the downward movement of said cup (16) relative to the sleeve (28).

5. Cesspool according to claim 3 wherein said cup (16) is supported for movement upwardly and downwardly relative to said seat (19) with said seat (19) being oriented so that upward movement of said cup relative to said seat moves said cup toward engagement with said seat and downward movement of said cup relative to said seat moves said cup away from said seat, and said power generating means (20) consists of a plurality of helical springs adapted to affect the cup (16) with a successively increasing force in an upwards direction towards said seat (19) the farther said cup (16) is moved downwardly away from said seat (19), said helical spring being mounted in the cesspool (1) on the outside of said cup (16), each of said helical springs having a bottom end which engages a support surface (37) fixed relative to the seat (19) and an upper end which engages a support surface (39) fixed relative to the cup (16) with the spring being compressed between said support surfaces (37 and 39).

6. Cesspool according to claim 5 wherein said support surface engaged by the upper end of each spring is an end wall (39) of a sleeve (40) connected to the cup (16), and said support surface engaged by the bottom end of each spring is located on the bottom portion (37) of a sleeve (38) connected to a member (7) fixed relative to the seat (19), said sleeve (40) connected to said cup (16) being movably mounted inside said sleeve (38) fixed relative to said seat and being guided thereby during its movement.

7. Cesspool according to claim 3 wherein said cup (16) is so constructed and arranged that the width of said gap is smaller than the total height of said cup (16) when said cup engages said seat (19).

8. Cesspool according to claim 3 wherein said cup (66) has a side wall surrounding said tubular portion (14) of said inlet member (7) which side wall is spaced a substantial distance from said tubular portion (14) of said inlet member (7) so as to provide a wide vertically extending annular throughflow gap between said tubular portion (14) and said side wall of said cup (16).

9. Cesspool according to claim 3 wherein said cup (16) has a vertically extending side wall surrounding and spaced from said tubular portion and having a height substantially equal to that of said tubular portion.