Patent DE848797C successfully refreshed from Google Patents.
US3595503A
Expired / Lapsed
US
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Vibration-isolated system
Assignee: Pfizer Health AB
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Filing: 1969-03-21
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Granted: 1971-07-27
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Expires: 1989-03-21
Abstract
Abstract A system is isolated from disturbances having low amplitude, the isolation consisting of a number of oblique resilient elements and a number of damping elements functionally coupled in parallel with the oblique resilient elements. Both the oblique resilient and the damping elements are connected with an isolating part in an outer frame. The damping elements have no supporting function and act nonlinearly. This system is useful for sensitive instruments and tools, as ultramicrotomes.
Inventors
- 👤 Robert Tidblad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:35
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/02; F16F15/04; F16F15/06; F16F15/067
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
87 words
Vibration isolation system for suspension of sensitive instruments to isolate low-amplitude vibrations comprising a framework, support means for an instrument to be isolated, a plurality of longitudinally resilient load-carrying members connected between said framework and said support means and extending longitudinally angularly with respect to a vertical line, and a plurality of nonload-bearing damping elements having no linear response characteristics connected between said framework and said support means and arranged to exert damping forces in directions parallel with the effective forces exerted by said load carrying members.
Claim 2
Dependent Claim
87 words
Vibration isolation system for suspension of sensitive instruments to isolate low-amplitude vibrations comprising a framework, support means for an instrument to be isolated, a plurality of longitudinally resilient load-carrying members connected between said framework and said support means and extending longitudinally angularly with respect to a vertical line, and a plurality of nonload-bearing damping elements having no linear response characteristics connected between said framework and said support means and arranged to exert damping forces in directions parallel with the effective forces exerted by said load carrying members.
Claim 3
Dependent Claim
17 words
The vibration isolation system of claim 1, wherein the oblique resilient elements consist of oblique steel springs.
Claim 4
Dependent Claim
26 words
The vibration isolation system of claim 2, wherein the damping elements consist of a nonlinearly acting rubber damper with about the same stiffness in different directions.
Claim 5
Dependent Claim
52 words
The vibration isolation system of claim 3 comprising an isolated rectangular table attached in an outer frame by means of eight oblique steel springs arranged in coupled in the corners of table top and including four rubber dampers arranged in couples alongside the table top without a load-carrying function and acting nonlinearly.
Claim 6
Dependent Claim
24 words
The vibration isolation system of claim 4, wherein the inclination of the springs is such that the spring constants are similar vertically and horizontally.
Claim 7
Dependent Claim
87 words
The invention defined in claim 1, wherein said resilient load-carrying members comprise pairs of elongated coil springs, one end of each of said pair of springs being attached to said framework at locations horizontally spaced from each other, the other ends of said pair of springs having a common fastening adjacent to each other, and said support means includes a vertically disposed member for each of said pairs of coil springs, said fastening for the other ends of the spring being attached to said vertically disposed member.
Claim 8
Dependent Claim
40 words
The invention defined in claim 6, wherein at least a portion of the vertically disposed member is comprised of a threaded rod, and Said fastening is attached in threaded engagement thereto for adjusting the force exerted by the coil springs.
References Cited (Backward Citations)
US2711297A
Cited
US3428185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |