US4667921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic suspension device having a great angular rigidity
Assignee: Bertin Technologies SAS
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Filing: 1985-04-18
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Granted: 1987-05-26
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Expires: 2005-04-18
Abstract
Abstract The suspension device comprises at least one suspension element formed by an elastically yieldable leaf between two rigid end portions, and four bearing means symmetrically disposed in pairs relative to the transverse axis of symmetry of the leaf on each of the sides of the suspension element.
Inventors
- 👤 Louis De Goncourt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:32
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/28; F16F1/00; F16F1/02; F16F1/18; F16F2224/00; F16F2224/02; F16F2224/0241
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
An elastic suspension device having a great angular rigidity and for disposing between a load and a support, said device comprising at least a suspension element comprising a central elastically yieldable leaf having a transverse axis of symmetry, two rigid end portions between which portions said central leaf is disposed, and four bearing means disposed symmetrically in pairs relative to said transverse axis of symmetry on each side of the suspension element, one of said pair being near the ends of said central elastically yieldable leaf.
Claim 2
Dependent Claim
86 words
An elastic suspension device having a great angular rigidity and for disposing between a load and a support, said device comprising at least a suspension element comprising a central elastically yieldable leaf having a transverse axis of symmetry, two rigid end portions between which portions said central leaf is disposed, and four bearing means disposed symmetrically in pairs relative to said transverse axis of symmetry on each side of the suspension element, one of said pair being near the ends of said central elastically yieldable leaf.
Claim 3
Dependent Claim
38 words
A device according to claim 1, wherein said two rigid end portions have a triangular longitudinal section, at least two of said symmetrical bearing means being formed by an edge defined by an apex of said triangular section.
Claim 4
Dependent Claim
71 words
A device according to claim 1, wherein said suspension element has an evolutive shape and said elastically yieldable leaf forms a central portion of said suspension element of evolutive shape and is connected by ends thereof to convex end portions of said rigid end portions, said convex portions having top portions which constitute two of said bearing means which are symmetrical relative to said transverse axis of symmetry of said leaf.
Claim 5
Dependent Claim
26 words
A device according to claim 1, wherein said elastically yieldable leaf is formed by at least one sheet of parallel fibers embedded on a synthetic resin.
Claim 6
Dependent Claim
60 words
A device according to claim 4, wherein said sheet of fibers is formed by a fabric having a first elastic property in a first direction and a second elastic property in a second direction, said first elastic property being superior to said second elastic property and said first direction being a longitudinal direction of said leaf formed from a fabric.
Claim 7
Dependent Claim
20 words
A device according to claim 4, wherein at least one sheet of fibers constitutes a skin of said end portions.
Claim 8
Dependent Claim
20 words
A device according to claim 5, wherein at least one sheet of fibers constitutes a skin of said end portions.
Claim 9
Dependent Claim
44 words
A device according to claim 1, comprising two of said suspension elements which are arranged in a cross configuration, each of said two suspension elements carrying at least two spot bearing means which are symmetrical relative said transverse axis of symmetry of said leaf.
Claim 10
Dependent Claim
20 words
A device according to claim 1, comprising at least two of said suspension elements in parallel relation to each other.
Claim 11
Dependent Claim
17 words
A device according to claim 9, wherein said at least two suspension elements are transversely locked together.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |