US3675308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for assembling hydraulic accumulators
Assignee: TDK Micronas GmbH
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Filing: 1970-07-09
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Granted: 1972-07-11
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Expires: 1990-07-09
Abstract
Abstract A method of assembling hydraulic accumulators of the bladder type having a casing formed from two open-mounted shells rigidly fitted together comprising the steps of fitting the bladder on the mouth of the inner shell, sliding the bladder and inner shell into the outer shell until the bladder fits closely against the inner surface of the outer shell, and rigidly connecting the shells in this position.
Inventors
- 👤 Helmut Ziegler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:33
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/10; F15B1/18; F15B1/20; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/315; F15B2201/3151; F15B2201/3156; F15B2201/40; F15B2201/43; F15B2201/60; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49808; Y10T29/49826; Y10T29/4984; Y10T29/49877; Y10T29/49908; Y10T29/49915; Y10T29/49917; Y10T29/49918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
314 words
A method of assembling hydraulic accumulators of the bladder type formed from a casing having a first open-mouthed shell including a first cylindrical portion at the mouth of said first shell having a given outer diameter and a peripheral groove in the outer surface of said first portion adjacent the mouth of said first shell and a second open-mouthed shell including a second cylindrical portion at the mouth of said second shell having a given inner diameter slightly greater than said given outer diameter to provide a force bit between said first and second portions, a connection through said second shell opposite said mouth of said second shell and a bladder includinG an inwardly extending annular bead at one end of said bladder and a cup-shaped stop plate, the bottom of said stop plate being secured to the outer surface of the other end of said bladder comprising the steps of securing the bottom of said stop plate to the outer surface of said other end of said bladder; fitting said annular bead into said peripheral groove so that said bladder and said stop plate extend outside said first shell; forcing said bladder, said stop plate and said first shell into said second shell until the mouth of said stop plate contacts the inner surface of said second shell in a bridging relation with said connection to prevent said bladder from entering said connection and until said bladder is in contact with all of said inner surface of said second shell except in the region of said stop plate to prevent damage to said bladder by stretching or pinching thereof when said accumulator is empty; and rigidly connecting said first and second shells together to insure maintenance of the last mentioned position of said bladder with respect to the inner surface of said second shell and said stop plate with respect to said connection.
Claim 2
Independent Claim
314 words
A method of assembling hydraulic accumulators of the bladder type formed from a casing having a first open-mouthed shell including a first cylindrical portion at the mouth of said first shell having a given outer diameter and a peripheral groove in the outer surface of said first portion adjacent the mouth of said first shell and a second open-mouthed shell including a second cylindrical portion at the mouth of said second shell having a given inner diameter slightly greater than said given outer diameter to provide a force bit between said first and second portions, a connection through said second shell opposite said mouth of said second shell and a bladder includinG an inwardly extending annular bead at one end of said bladder and a cup-shaped stop plate, the bottom of said stop plate being secured to the outer surface of the other end of said bladder comprising the steps of securing the bottom of said stop plate to the outer surface of said other end of said bladder; fitting said annular bead into said peripheral groove so that said bladder and said stop plate extend outside said first shell; forcing said bladder, said stop plate and said first shell into said second shell until the mouth of said stop plate contacts the inner surface of said second shell in a bridging relation with said connection to prevent said bladder from entering said connection and until said bladder is in contact with all of said inner surface of said second shell except in the region of said stop plate to prevent damage to said bladder by stretching or pinching thereof when said accumulator is empty; and rigidly connecting said first and second shells together to insure maintenance of the last mentioned position of said bladder with respect to the inner surface of said second shell and said stop plate with respect to said connection.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |