US3554483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thrust limiting spring coupling
Assignee: Elsag Bailey Inc
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Filing: 1969-01-17
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Granted: 1971-01-12
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Expires: 1989-01-17
Abstract
Abstract A spring coupling device for a valve actuator assembly having a plurality of preloaded disc springs for absorbing an applied thrust above a predetermined amount to preclude distortion of the valve members to which the thrust is applied.
Inventors
- 👤 John J Kuwik
- 👤 Thomas E Stevenson
- 👤 John J Yagoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:39
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/04; F16K31/047; F16K31/048
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
83 words
In a valve actuator assembly, a spring coupling interposed between the valve actuator ram and the valve stem, said coupling comprising: support means forming an interior space symmetrical to the ram thrust axis; spring means adapted to be biased within the interior space of said support means; and preloading means for biasing said spring means a predetermined amount above valve operating thrust so that said spring means absorbs the applied ram thrust above the predetermined amount to preclude distortion of the valve assembly.
Claim 2
Dependent Claim
83 words
In a valve actuator assembly, a spring coupling interposed between the valve actuator ram and the valve stem, said coupling comprising: support means forming an interior space symmetrical to the ram thrust axis; spring means adapted to be biased within the interior space of said support means; and preloading means for biasing said spring means a predetermined amount above valve operating thrust so that said spring means absorbs the applied ram thrust above the predetermined amount to preclude distortion of the valve assembly.
Claim 3
Dependent Claim
42 words
The spring coupling of claim 1 wherein said preloading means includes both means for adjusting the bias on said spring means and means for deflecting said spring means proportional to the applied ram thrust exceeding the bias value on said spring means.
Claim 4
Dependent Claim
35 words
The spring coupling of claim 2 wherein said adjusting means has a passage having an axis common to the ram thrust axis and said deflecting means applies thrust to said spring means through the passage.
Claim 5
Dependent Claim
26 words
The spring coupling of claim 3 wherein said spring means includes a plurality of disc springs compressively retained between said preloading means and said support means.
Claim 6
Dependent Claim
42 words
The spring coupling of claim 2 wherein said support means has a passage communicating with the interior space, the passage having an axis common to the ram thrust axis and said deflecting means applies thrust to said spring means through the passage.
Claim 7
Dependent Claim
57 words
The spring coupling of claim 5 wherein said spring means includes a plurality of disc springs each having a centrally located aperture aligned with the thrust axis, said disc springs being compressively retained between said preloading means and said support means, said deflecting means being adapted to apply reciprocating thrust through the apertures in said disc springs.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |