US3797816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air spring bellows
Assignee: Continental AG
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Filing: 1971-10-14
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Granted: 1974-03-19
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Expires: 1991-10-14
Abstract
Abstract An air spring bellows with two connecting sections of clearly different diameters and a conical portion interconnecting said two connecting sections while the section with the shorter diameter is connected to a metallic plunger member and the section with the greater diameter is connected to a cylinder member, the arrangement being such that a portion of the section with the smaller diameter is in response to a relative movement between said plunger and cylinder members cuffed-over another portion of the same section while the cuffed-over portion is radially outwardly spaced from the non-cuffed-over portion of the same section.
Inventors
- 👤 H Voss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:40
CPC Classifications
B; B60; B60G; B60G15/00; B60G15/08; B60G15/12; F; F16; F16F; F16F9/00; F16F9/06; F16F9/08; F16F9/084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
325 words
An air spring bellows having uniform, multiple conical configuration continuous therewith and suitably operable even at nominal operating pressure, which includes in combination: a first flexible and elastic tubular section for connection to a first metallic element forming a piston, said first section having only a slightly conical contour, a second flexible and elastic tubular section having a diameter considerably greater than that of said first section for connection to a second metallic element forming a cylinder, and a third flexible elastic tubular section interconnecting said first and second sections, in transition said third section having a contour with a considerably greater conical angle than that of said first section, the difference between maximum diameter of the only slightly conical first section and the maximum diameter of the third section being within the range of from 1 to 4 times the wall thickness of the bellows, the conical angle of the third section being within the range of from 10* to 35*, said second section being adapted to be cuffed-over said first section, and in said cuffed-over condition said first and second sections being movable relative to each other with the cuffed-over portion in radially spaced relationship to the adjacent non-cuffed-over portion of said first section, the area where the only slightly conical first section merges with the second section being rounded, the area where the second section merges with said third section also being rounded, that surface of said third section which in non-cuffed condition of the bellows faces outwardly having configuration that in cuffed-over condition faces inwardly, and that area of said first section which is connected to the piston being substantially cylindrical and of a shorter diameter than the smallest diameter of the remaining portion of said first section while merging with said remaining portion of said first section along a slightly conical section, in effect there being a double conicalness of bellows wall means for eliminating the problem of lobe formation.
Claim 2
Dependent Claim
325 words
An air spring bellows having uniform, multiple conical configuration continuous therewith and suitably operable even at nominal operating pressure, which includes in combination: a first flexible and elastic tubular section for connection to a first metallic element forming a piston, said first section having only a slightly conical contour, a second flexible and elastic tubular section having a diameter considerably greater than that of said first section for connection to a second metallic element forming a cylinder, and a third flexible elastic tubular section interconnecting said first and second sections, in transition said third section having a contour with a considerably greater conical angle than that of said first section, the difference between maximum diameter of the only slightly conical first section and the maximum diameter of the third section being within the range of from 1 to 4 times the wall thickness of the bellows, the conical angle of the third section being within the range of from 10* to 35*, said second section being adapted to be cuffed-over said first section, and in said cuffed-over condition said first and second sections being movable relative to each other with the cuffed-over portion in radially spaced relationship to the adjacent non-cuffed-over portion of said first section, the area where the only slightly conical first section merges with the second section being rounded, the area where the second section merges with said third section also being rounded, that surface of said third section which in non-cuffed condition of the bellows faces outwardly having configuration that in cuffed-over condition faces inwardly, and that area of said first section which is connected to the piston being substantially cylindrical and of a shorter diameter than the smallest diameter of the remaining portion of said first section while merging with said remaining portion of said first section along a slightly conical section, in effect there being a double conicalness of bellows wall means for eliminating the problem of lobe formation.
References Cited (Backward Citations)
US3063701A
Cited
US3596895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |