Patent US3674053A successfully refreshed from Google Patents.
US3674053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replaceable bladder pulsation dampener
Assignee: Hydril LLC
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Filing: 1970-06-12
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Granted: 1972-07-04
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Expires: 1990-06-12
Abstract
Abstract A pulsation dampener comprises A. A VESSEL HAVING A HOLLOW INTERIOR AND A MAIN INLET FOR FIRST FLUID SUBJECTED TO PULSATION, B. A BLADDER EXTENDING WITHIN THE VESSEL INTERIOR DIVIDING SAME INTO A FIRST ZONE ADAPTED TO RECEIVE SAID FIRST FLUID AND A SECOND ZONE ADAPTED TO CONTAIN SECOND FLUID UNDER PRESSURE, AND C. THE VESSEL HAVING AN INLET FOR SAID SECOND FLUID AND WHICH IS LOCATED TO BE OVERLAPPED BY SAID BLADDER FOR SEALING OFF COMMUNICATION BETWEEN SAID INLET AND SAID SECOND ZONE IN RESPONSE TO FIRST FLUID PRESSURE EXERTION AGAINST THE BLADDER.
Inventors
- 👤 Fernando Murman
- 👤 George E Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:37
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/02; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/10; F15B1/16; F15B1/165; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F16L55/053; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/315; F15B2201/3152; F15B2201/40; F15B2201/415; F15B2201/4155; F15B2201/43; F15B2201/435
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
160 words
In a pulsation dampener, the combination, comprising a. a vessel having a hollow interior and a main inlet for first fluid subjected to pulsation, b. a bladder extending within the vessel interior dividing same into a first zone adapted to receive said first fluid and a second zone adapted to contain second fluid under pressure, the bladder having a body portion adapted to flex back and forth to dampen said pulsation, c. the vessel having an auxiliary inlet for said second fluid and which remains closely overlapped by a side portion of said bladder during said body portion flexing for sealing off communication between said auxiliary inlet and said second zone in response to first fluid pressure exertion against the bladder, d. the bladder having a neck, the vessel including a removable plate forming said main inlet and retaining said bladder neck removably attached to the vessel, and the vessel having a neck removably receiving said plate and bladder neck.
Claim 2
Dependent Claim
160 words
In a pulsation dampener, the combination, comprising a. a vessel having a hollow interior and a main inlet for first fluid subjected to pulsation, b. a bladder extending within the vessel interior dividing same into a first zone adapted to receive said first fluid and a second zone adapted to contain second fluid under pressure, the bladder having a body portion adapted to flex back and forth to dampen said pulsation, c. the vessel having an auxiliary inlet for said second fluid and which remains closely overlapped by a side portion of said bladder during said body portion flexing for sealing off communication between said auxiliary inlet and said second zone in response to first fluid pressure exertion against the bladder, d. the bladder having a neck, the vessel including a removable plate forming said main inlet and retaining said bladder neck removably attached to the vessel, and the vessel having a neck removably receiving said plate and bladder neck.
Claim 3
Dependent Claim
47 words
The combination of claim 1 wherein the vessel has a wall containing a bore, and including an insert received in said bore and containing ducting communicating with said auxiliary inlet to pass said second fluid thereto, the insert presenting bladder supporting surface extent proximate said auxiliary inlet.
Claim 4
Dependent Claim
36 words
The combination of claim 2 wherein said bore includes a counterbore at the inner side of said wall, the insert having a head received in said counterbore to resist pressure induced outward displacement of the insert.
Claim 5
Dependent Claim
17 words
The combination of claim 3 wherein said auxiliary inlet is formed between said head and said counterbore.
Claim 6
Dependent Claim
25 words
The combination of claim 3 wherein the insert has a shank with threaded connection to the vessel at said bore, and outwardly of said head.
Claim 7
Dependent Claim
16 words
The combination of claim 5 including a plug received in said bore outwardly of said iNsert.
Claim 8
Dependent Claim
23 words
The combination of claim 1 wherein the plate and vessel neck have threaded connection, and including removable means blocking unthreading of said connection.
Claim 9
Dependent Claim
12 words
The combination of claim 7 wherein said means comprises a removable weld.
Claim 10
Dependent Claim
20 words
The combination of claim 1 including a pneumatic tool having an air pressure delivery line communicating with said main inlet.
Claim 11
Dependent Claim
144 words
In a pulsation dampener, the combination, comprising a. a vessel having a hollow interior and a main inlet for first fluid subjected to pulsation, b. a bladder extending within the vessel interior dividing same into a first zone adapted to receive said first fluid and a second zone containing second fluid under pressure, the bladder having a body portion adapted to flex back and forth to dampen said pulsation, and c. the vessel having an auxiliary inlet for said second fluid and which remains closely overlapped by a side portion of said bladder during said body portion flexing for sealing off communication between said auxiliary inlet and said second zone in response to first fluid pressure exertion against the bladder, d. said second fluid in said second zone acting to urge the bladder into a configuration characterized by double overlapping of said auxiliary inlet,
Claim 12
Dependent Claim
144 words
In a pulsation dampener, the combination, comprising a. a vessel having a hollow interior and a main inlet for first fluid subjected to pulsation, b. a bladder extending within the vessel interior dividing same into a first zone adapted to receive said first fluid and a second zone containing second fluid under pressure, the bladder having a body portion adapted to flex back and forth to dampen said pulsation, and c. the vessel having an auxiliary inlet for said second fluid and which remains closely overlapped by a side portion of said bladder during said body portion flexing for sealing off communication between said auxiliary inlet and said second zone in response to first fluid pressure exertion against the bladder, d. said second fluid in said second zone acting to urge the bladder into a configuration characterized by double overlapping of said auxiliary inlet,
Claim 13
Dependent Claim
35 words
The combination of claim 10 wherein the bladder has a neck region, and including an insert carried by the bladder to plug said neck region at times when said bladder doubly overlaps said auxiliary inlet.
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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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |