US4462425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backflushing system
Assignee: Ecolab Inc
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Filing: 1981-07-13
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Granted: 1984-07-31
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Expires: 2001-07-13
Abstract
Abstract A backflushing system capable of being used with an automatic milking device is the subject of this patent application. The system includes a control cam (54) which can be moved linearly to effectuate the various functions. The cam (54) has formed thereon a plurality of lands (64, 66, 68, 70) which operate various actuators (92, 94, 96). The various flushing functions and operation of a fail-safe valve (30) are governed by the actuators (92, 94, 96). In a preferred embodiment, the cam (54) is movable in both forward and reverse directions and is so controlled by a toggle switch (72), movable between two positions, which operates a two position, five way regulation valve (58).
Inventors
- 👤 Richard J. Mehus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:41
CPC Classifications
A; A01; A01J; A01J7/00; A01J7/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86445; Y10T137/877; Y10T137/87708; Y10T137/87764
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
349 words
Apparatus for sequentially controlling flow of water and sanitizing agent through a flushing conduit, into the main milk flow line of an automatic milking device, and out through a milking claw through which milk is drawn from a cow, comprising: (a) first valve means for regulating flow of rinse water into the flushing conduit, said first means including an actuator movable between a first position wherein rinse water is premitted to enter the conduit, and a second position wherein entry of rinse water into the conduit is precluded, and wherein said actuator is biased to its second position; (b) second valve means for regulating flow of sanitizing agent into the flushing conduit, said second means including an actuator movable between a first position wherein sanitizing agent is permitted to enter the conduit, and a second position wherein entry of sanitizing agent into the conduit is precluded, and wherein said actuator of said second means is biased to its second position; (c) a cam having first, second, and third lands, and being movable in a forward direction among a first position wherein said first land urges said actuator of said first valve means to its first position, said cam extends and moves generally linearly and transversely to a direction of movement of said actuators, a second position wherein said second land urges said actuator of said second valve means to its first position, and a third position wherein said third land urges said actuator of said first valve means to its first position; (d) means for driving said cam in said forward direction through its first, second, and third position consecutively; (e) wherein said actuator of said first valve means is in its second position when said cam is disposed in its second position, and wherein said actuator of said second valve means is in its second position when said cam is disposed in its first and third positions; and (f) wherein said cam is movable in a reverse direction, and further comprising means for driving said cam in said reverse direction through its third, second, and first positions consecutively.
Claim 2
Dependent Claim
349 words
Apparatus for sequentially controlling flow of water and sanitizing agent through a flushing conduit, into the main milk flow line of an automatic milking device, and out through a milking claw through which milk is drawn from a cow, comprising: (a) first valve means for regulating flow of rinse water into the flushing conduit, said first means including an actuator movable between a first position wherein rinse water is premitted to enter the conduit, and a second position wherein entry of rinse water into the conduit is precluded, and wherein said actuator is biased to its second position; (b) second valve means for regulating flow of sanitizing agent into the flushing conduit, said second means including an actuator movable between a first position wherein sanitizing agent is permitted to enter the conduit, and a second position wherein entry of sanitizing agent into the conduit is precluded, and wherein said actuator of said second means is biased to its second position; (c) a cam having first, second, and third lands, and being movable in a forward direction among a first position wherein said first land urges said actuator of said first valve means to its first position, said cam extends and moves generally linearly and transversely to a direction of movement of said actuators, a second position wherein said second land urges said actuator of said second valve means to its first position, and a third position wherein said third land urges said actuator of said first valve means to its first position; (d) means for driving said cam in said forward direction through its first, second, and third position consecutively; (e) wherein said actuator of said first valve means is in its second position when said cam is disposed in its second position, and wherein said actuator of said second valve means is in its second position when said cam is disposed in its first and third positions; and (f) wherein said cam is movable in a reverse direction, and further comprising means for driving said cam in said reverse direction through its third, second, and first positions consecutively.
Claim 3
Dependent Claim
101 words
Apparatus in accordance with claim 1 wherein said means for driving said cam in said forward and reverse directions comprises: (a) a first fluid cylinder having a piston disposed therein for movement in a direction generally aligned with the direction of movement of said cam, and fluid transfer ports formed therein, at least one of said ports being disposed on either side of said piston; (b) means operatively attaching said cam to said piston for movement therewith; and (c) fluid supply means for channeling fluid to said cylinder through said at least one port on a desired side of said piston.
Claim 4
Dependent Claim
19 words
Apparatus in accordance with claim 2 further comprising means for channeling fluid to a desired side of said piston.
Claim 5
Dependent Claim
24 words
Apparatus in accordance with claim 3 wherein said channeling means includes a toggle switch operated valve for channeling the fluid to the desired side.
Claim 6
Dependent Claim
32 words
Apparatus in accordance with claim 2 further comprising a tube channeling fluid for actuating said piston to said cylinder and means for selectively metering the rate of fluid flow through said tube.
Claim 7
Dependent Claim
15 words
Apparatus in accordance with claim 5 wherein said metering means comprises an adjustable needle valve.
References Cited (Backward Citations)
US1732702A
Cited
US2030394A
Cited
US2680445A
Cited
US2703068A
Cited
US2708448A
Cited
US3099277A
Cited
US3307580A
Cited
US3385265A
Cited
US3461845A
Cited
US3506034A
Cited
US3726253A
Cited
US4034713A
Cited
US4034714A
Cited
US4149489A
Cited
US4061504A
Cited
US4174721A
Cited
US4168677A
Cited
US4222346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |