Patent US2616874A successfully refreshed from Google Patents.
US4334537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drainage receptacle with anti-reflux valve
Assignee: Kendall Co
•
Filing: 1981-01-28
•
Granted: 1982-06-15
•
Expires: 2001-01-28
Abstract
Abstract An anti-reflux device comprising, a drainage receptacle having a chamber and a wall defining a lumen communicating with the chamber. The receptacle has an annular valve seat facing away from the lumen. The device has an elastic valve element having an elongated stem, and a disc connected to one end of the stem and having an upper surface normally sealingly engaging against the seat. The valve element has a retaining member for retaining the other end of the stem to the wall with the disc biased against the seat and with the retaining member defining an opening to permit passage of liquid therethrough.
Inventors
- 👤 James J. Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:45
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/44; A61F5/4404; A61F5/4405; F; F16; F16K; F16K15/00; F16K15/14; F16K15/141; F16K2200/00; F16K2200/30; F16K2200/305; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
An anti-reflux device, comprising: a drainage receptacle having a chamber and a wall defining a lumen communicating with the chamber, said receptacle having an annular valve seat facing away from the lumen; and an elastic valve element having an elongated stem, a disc connected to one end of said stem and having an upper surface normally sealingly engaging against said seat, and means for retaining the other end of the stem to the wall with the disc biased against the seat and with the retaining means defining opening means to permit passage of liquid therethrough, said disc moving away from the seat responsive to passage of liquid onto the disc, the retaining means comprising a plurality of arcuate elastic radial retaining arms extending from the other end of the stem and being spaced peripherally around the stem to define openings between the arms, said arms being connected to the wall and biasing the disc against the seat.
Claim 2
Dependent Claim
157 words
An anti-reflux device, comprising: a drainage receptacle having a chamber and a wall defining a lumen communicating with the chamber, said receptacle having an annular valve seat facing away from the lumen; and an elastic valve element having an elongated stem, a disc connected to one end of said stem and having an upper surface normally sealingly engaging against said seat, and means for retaining the other end of the stem to the wall with the disc biased against the seat and with the retaining means defining opening means to permit passage of liquid therethrough, said disc moving away from the seat responsive to passage of liquid onto the disc, the retaining means comprising a plurality of arcuate elastic radial retaining arms extending from the other end of the stem and being spaced peripherally around the stem to define openings between the arms, said arms being connected to the wall and biasing the disc against the seat.
Claim 3
Dependent Claim
11 words
The device of claim 1 wherein said disc is generally circular.
Claim 4
Dependent Claim
17 words
The device of claim 1 wherein the stem is connected to a central portion of the disc.
Claim 5
Dependent Claim
14 words
The device of claim 1 including adhesive securing the retaining arms to said wall.
Claim 6
Dependent Claim
52 words
The device of claim 1 wherein said wall comprises a conduit, and in which said receptacle has a connector defining said seat, said connector having an annular portion received in a downstream end of the conduit, with an outer end of the retaining arms resting on said annular portion in said conduit.
Claim 7
Dependent Claim
154 words
An anti-reflux device, comprising: a drainage receptacle having a chamber, a conduit defining a lumen communicating with the chamber, and a connector having an annular portion received in a downstream end of the conduit and defining an annular valve seat spaced downstream from the conduit and facing away from the lumen; and an elastic valve element having an elongated stem, a generally circular disc having an upper surface for sealingly engaging against said seat, with one end of the stem being connected to a central portion of the disc, and a plurality of radial arcuate elastic retaining arms extending outwardly from the other end of the stem and being spaced peripherally around the stem to define openings between the arms for passage of liquid therethrough, with outer ends of the arms resting on the annular portion to retain the valve element in place with the arms and stem biasing the disc against the seat.
Claim 8
Dependent Claim
154 words
An anti-reflux device, comprising: a drainage receptacle having a chamber, a conduit defining a lumen communicating with the chamber, and a connector having an annular portion received in a downstream end of the conduit and defining an annular valve seat spaced downstream from the conduit and facing away from the lumen; and an elastic valve element having an elongated stem, a generally circular disc having an upper surface for sealingly engaging against said seat, with one end of the stem being connected to a central portion of the disc, and a plurality of radial arcuate elastic retaining arms extending outwardly from the other end of the stem and being spaced peripherally around the stem to define openings between the arms for passage of liquid therethrough, with outer ends of the arms resting on the annular portion to retain the valve element in place with the arms and stem biasing the disc against the seat.
References Cited (Backward Citations)
GB389957A
Cited
US3291150A
Cited
US3626980A
Cited
US3965900A
Cited
US4176666A
Cited
US4158362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-14 | 1985-12-14 | 1986-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-14 | 1989-12-14 | 1990-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-14 | 1993-12-14 | 1994-06-15 | $7700.00 | Window Closed / Lapsed |