Patent US4477062A successfully refreshed from Google Patents.
US4477062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable gas spring shock absorber and control device
Assignee: Maremont Corp
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Filing: 1982-01-25
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Granted: 1984-10-16
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Expires: 2002-01-25
Abstract
Abstract An adjustable gas spring shock absorber, a control device therefore, and a control device for a fluid mechanism. The control device employs adsorption to regulate the shock absorber or fluid mechanism.
Inventors
- 👤 Paul Smeltzer
- 👤 Mahesh N. Shah
- 👤 Shapoor B. Guzder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:41
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/002; B60G15/00; B60G15/08; B60G15/12; B60G17/02; B60G17/04; B60G17/052; F; F16; F16F; F16F9/00; F16F9/32
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
121 words
A control device for a fluid mechanism containing a variably pressurizable fluid comprising: a pressurizable vessel; adsorbent in the vessel, the adsorbency of the adsorbent being variable with temperature; adsorbate in the vessel of a type adsorbed by the adsorbent; means associated with the vessel for providing controlled variation of the temperature of the adsorbent and adsorbate such that the means, adsorbent and adsorbate constitute means for providing a controlled variation of adsorbency and thereby pressure within the vessel; and means operably connecting the vessel to the fluid mechanism for providing a controlled variation of the pressure of the fluid in response to the controlled variation of the pressure within the vessel; whereby a controlled variation of fluid pressure is provided.
Claim 2
Dependent Claim
121 words
A control device for a fluid mechanism containing a variably pressurizable fluid comprising: a pressurizable vessel; adsorbent in the vessel, the adsorbency of the adsorbent being variable with temperature; adsorbate in the vessel of a type adsorbed by the adsorbent; means associated with the vessel for providing controlled variation of the temperature of the adsorbent and adsorbate such that the means, adsorbent and adsorbate constitute means for providing a controlled variation of adsorbency and thereby pressure within the vessel; and means operably connecting the vessel to the fluid mechanism for providing a controlled variation of the pressure of the fluid in response to the controlled variation of the pressure within the vessel; whereby a controlled variation of fluid pressure is provided.
Claim 3
Dependent Claim
120 words
A control device for a spring containing a variably pressurizable fluid comprising: a pressurizable vessel; adsorbent in the vessel, the adsorbency of the adsorbent being variable with temperature; adsorbate in the vessel of a type adsorbed by the adsorbent; means associated with the vessel for providing controlled variation of the temperature of the adsorbent and adsorbate such that the means, adsorbent and matter adsorbate constitute means for providing a controlled variation of adsorbency and thereby pressure within the vessel; and means operably connecting the vessel to the spring for providing a controlled variation of the pressure of the fluid in response to the controlled variation of the pressure within the vessel; whereby a controlled variation of fluid pressure is provided.
Claim 4
Dependent Claim
120 words
A control device for a spring containing a variably pressurizable fluid comprising: a pressurizable vessel; adsorbent in the vessel, the adsorbency of the adsorbent being variable with temperature; adsorbate in the vessel of a type adsorbed by the adsorbent; means associated with the vessel for providing controlled variation of the temperature of the adsorbent and adsorbate such that the means, adsorbent and matter adsorbate constitute means for providing a controlled variation of adsorbency and thereby pressure within the vessel; and means operably connecting the vessel to the spring for providing a controlled variation of the pressure of the fluid in response to the controlled variation of the pressure within the vessel; whereby a controlled variation of fluid pressure is provided.
Claim 5
Dependent Claim
138 words
An adjustable fluid spring device including a control device comprising: at least two spring mounts; a fluid chamber containing a variably pressurizable fluid and being connected to the spring mounts; a pressurizable vessel; adsorbent in the vessel, the adsorbency of the adsorbent being variable with temperature; adsorbate in the vessel of a type adsorbed by the adsorbent; means associated with the vessel for providing controlled variation of the temperature of the adsorbent and adsorbate such that the means, adsorbent and adsorbate constitute means for providing a controlled variation of adsorbency and thereby pressure within the vessel; and means operably connecting the vessel to the fluid chamber for providing a controlled variation of the pressure of the fluid in response to the controlled variation of the pressure within the vessel; whereby a controlled variation of fluid pressure is provided.
Claim 6
Dependent Claim
138 words
An adjustable fluid spring device including a control device comprising: at least two spring mounts; a fluid chamber containing a variably pressurizable fluid and being connected to the spring mounts; a pressurizable vessel; adsorbent in the vessel, the adsorbency of the adsorbent being variable with temperature; adsorbate in the vessel of a type adsorbed by the adsorbent; means associated with the vessel for providing controlled variation of the temperature of the adsorbent and adsorbate such that the means, adsorbent and adsorbate constitute means for providing a controlled variation of adsorbency and thereby pressure within the vessel; and means operably connecting the vessel to the fluid chamber for providing a controlled variation of the pressure of the fluid in response to the controlled variation of the pressure within the vessel; whereby a controlled variation of fluid pressure is provided.
Claim 7
Dependent Claim
15 words
A device as in claim 1, 2 or 3 in which the fluid is adsorbate.
Claim 8
Dependent Claim
33 words
A device as in claim 4 in which the means for providing a controlled variation of the pressure of the fluid provides open communication of the fluid with the adsorbate in the vessel.
Claim 9
Dependent Claim
16 words
A device as in claim 1, 2 or 3 in which the adsorbate is carbon dioxide.
Claim 10
Dependent Claim
18 words
A device as in claim 1, 2 or 3 in which the adsorbate is composed of polar molecules.
Claim 11
Dependent Claim
39 words
A device as in claim 1, 2 or 3 in which the means for providing controlled variation of the temperature comprises means for sensing an external condition, and means for automatically adjusting temperature in relation to the external condition.
Claim 12
Dependent Claim
45 words
A device as in claim 3 in which the means for providing controlled variation of the temperature comprises means for sensing the mean dynamic distance between a spring mount and a point of reference, and means for automatically adjusting temperature in relation to the distance.
Claim 13
Dependent Claim
25 words
A device as in claim 1, 2 or 3 in which the means for providing controlled variation of the temperature comprises an electrical heating element.
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) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |