US4217931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable check valve
Assignee: Individual
•
Filing: 1978-09-08
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Granted: 1980-08-19
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Expires: 1998-09-08
Abstract
Abstract A smoothly acting adjustable fluid flow check valve comprises an adjustably spring biased ball valve member, a piston upstream of the ball valve member and having a stem acting as an actuator for the ball valve member and as a further valving member actually controlling the volume of fluid passing through the check valve, the piston and ball valve member moving under the influence of a dashpot disposed so as to damp their movement. The valve may be incorporated into a conventional faucet structure.
Inventors
- 👤 Gunter Jaekel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:34
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/04; F16K15/044; F16K47/00; F16K47/01; F16K47/011; F16K47/0111; F16K47/08; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7791; Y10T137/7837; Y10T137/7838; Y10T137/785; Y10T137/7852; Y10T137/7853; Y10T137/7904; Y10T137/7922; Y10T137/7927; Y10T137/7928; Y10T137/8593; Y10T137/87571; Y10T137/87676; Y10T137/87684
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
278 words
A check valve comprising a valve housing having an inlet and an outlet, a valve seating in the housing defining a passage between inlet and outlet chambers defined in said housing, a ball valve seatable on the seating on the outlet side thereof, a compression spring urging the ball onto the seat, a movable abutment mounted in the housing and comprising a stem having a threaded portion rotatable in a thread defining means in the body and extending out of the body through a gland attached to the latter, the spring acting between the ball and the abutment to apply an adjustable bias to said ball tending to retain it on said valve seat, a first piston having a path of movement in the passage defined by the valve seating, passageway means defined by the piston and extending from an inlet in the one end of the piston nearest the inlet to at least one outlet in the side of the piston and so positioned that at one end of the path of movement of the piston the outlet is wholly within the passage in the valve seating and obturated by the latter and at the other end of the travel of the piston is on the outlet side of the valve seat, the other end of the piston being engagable with the ball valve member, and dashpot means comprising a second piston, constrained to move conjointly with said ball and said first piston, and cylinder means receiving said second piston for movement relative to said housing, a leakage path being defined communicating with said cylinder to control the rate of displacement of said piston in said cylinder.
Claim 2
Dependent Claim
278 words
A check valve comprising a valve housing having an inlet and an outlet, a valve seating in the housing defining a passage between inlet and outlet chambers defined in said housing, a ball valve seatable on the seating on the outlet side thereof, a compression spring urging the ball onto the seat, a movable abutment mounted in the housing and comprising a stem having a threaded portion rotatable in a thread defining means in the body and extending out of the body through a gland attached to the latter, the spring acting between the ball and the abutment to apply an adjustable bias to said ball tending to retain it on said valve seat, a first piston having a path of movement in the passage defined by the valve seating, passageway means defined by the piston and extending from an inlet in the one end of the piston nearest the inlet to at least one outlet in the side of the piston and so positioned that at one end of the path of movement of the piston the outlet is wholly within the passage in the valve seating and obturated by the latter and at the other end of the travel of the piston is on the outlet side of the valve seat, the other end of the piston being engagable with the ball valve member, and dashpot means comprising a second piston, constrained to move conjointly with said ball and said first piston, and cylinder means receiving said second piston for movement relative to said housing, a leakage path being defined communicating with said cylinder to control the rate of displacement of said piston in said cylinder.
Claim 3
Dependent Claim
31 words
A check valve according to claim 1, wherein the first and second pistons are integral and said cylinder is formed in the housing on the inlet side of the valve seat.
Claim 4
Dependent Claim
42 words
A check valve according to claim 1, wherein the first and second pistons are separate, and the second piston acts on the ball in opposition to the first piston, said spring acting between said stem and an abutment on said second piston.
Claim 5
Dependent Claim
19 words
A check valve according to claim 3, wherein the cylinder is formed in the threaded portion of the stem.
Claim 6
Dependent Claim
74 words
A check valve according to claim 3, wherein the check valve is a faucet, the valve seating is removable, and the valve housing, the stem forming the movable abutment, the thread defining means and the gland are parts suited for a faucet of the kind in which the stem would normally be used to force a washer on a carrier entering a bore in the stem onto a removable valve seating in the housing.
Claim 7
Dependent Claim
52 words
A check valve according to claim 1, 3 or 4, incorporated in an assembly with a similar check valve and a further valve, the inlets of the check valves being connected to hot and cold water supply lines respectively, and their outlets both being connected to the inlet of said further valve.
Claim 8
Dependent Claim
268 words
A repair kit for a faucet of the kind in which a stem having a threaded portion rotatable in a thread defining means in a housing and extending out of the housing through a gland attached to the latter is normally used to force a washer on a carrier entering a bore in the stem onto a removable valve seating in the housing, said kit comprising a valve seating for insertion in the housing, a ball valve seatable on the seating on an outlet side thereof, a first piston for movement in a passage defined by the valve seating, passageway means being defined by the piston and extending from an inlet in the one end of the piston to at least one outlet in the side of the piston so positioned that at one end of the path of movement of the piston within the passage the outlet is wholly within the passage within the valve seating and obturated by the latter and at the other end of the travel of the piston in the passage is on the outlet side of the valve seat, the other end of the piston being engagable with the ball valve member, dashpot means comprising a second piston separate from the first piston and engagable with the ball valve in opposition to the first piston, and a compression spring engagable between said stem of the faucet and an abutment on said second piston, said first and second pistons, the ball and the spring being configured to replace the washer and carrier normally employed in a faucet for which the kit is intended.
Claim 9
Dependent Claim
268 words
A repair kit for a faucet of the kind in which a stem having a threaded portion rotatable in a thread defining means in a housing and extending out of the housing through a gland attached to the latter is normally used to force a washer on a carrier entering a bore in the stem onto a removable valve seating in the housing, said kit comprising a valve seating for insertion in the housing, a ball valve seatable on the seating on an outlet side thereof, a first piston for movement in a passage defined by the valve seating, passageway means being defined by the piston and extending from an inlet in the one end of the piston to at least one outlet in the side of the piston so positioned that at one end of the path of movement of the piston within the passage the outlet is wholly within the passage within the valve seating and obturated by the latter and at the other end of the travel of the piston in the passage is on the outlet side of the valve seat, the other end of the piston being engagable with the ball valve member, dashpot means comprising a second piston separate from the first piston and engagable with the ball valve in opposition to the first piston, and a compression spring engagable between said stem of the faucet and an abutment on said second piston, said first and second pistons, the ball and the spring being configured to replace the washer and carrier normally employed in a faucet for which the kit is intended.
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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) | 1983-08-19 | 1984-02-18 | 1984-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-19 | 1988-02-18 | 1988-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-19 | 1992-02-18 | 1992-08-19 | $7700.00 | Window Closed / Lapsed |