US3790078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibrator damping of vehicle path
Assignee: Akustikbyran AB
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Filing: 1971-05-25
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Granted: 1974-02-05
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Expires: 1991-05-25
Abstract
Abstract Track supporting apparatus for vehicles to dampen vibrations arising as a result of vehicle movement on the track. The apparatus comprises a bottom plate which extends in the longitudinal direction of the track and which is supported by an elastic support means. At least one upper plate is disposed on the bottom plate, with a damping layer interposed between the bottom plate and the upper plate. A further means is provided for inhibiting relative lateral movement between the bottom plate and the upper plate. The damping layer may comprise a layer of viscoelastic material which is very thin relative to the thickness of the plates.
Inventors
- 👤 G Hagbjer
- 👤 K Spang
- 👤 Bo Malte Egerbork
- 👤 G Gadefelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:18
CPC Classifications
E; E01; E01B; E01B3/00; E01B3/28; E01B3/38; E01B1/00; E01B1/002; E01B2204/00; E01B2204/01; E01B2204/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
148 words
Track supporting apparatus for vehicles for damping vibrations arising as a result of vehicle movement on the track and for substantially preventing transmission of such vibrations to the ground and to the surroundings of the track comprising, a bottom plate extending in the longitudinal direction of the track, elastic support means for supporting said bottom plate without rigid contact with the ground, at least one upper plate disposed on said bottom plate, a damping layer interposed between said bottom plate and said upper plate, and means for inhibiting relative lateral movement between said bottom plate and said upper plate, said damping layer including a layer of viscoelastic material which layer is very thin relative to the thickness of the plates, whereby shear stresses are developed in said visoelastic material when relative lateral movement takes place between the upper and bottom plates and when they oscillate in bending modes.
Claim 2
Dependent Claim
148 words
Track supporting apparatus for vehicles for damping vibrations arising as a result of vehicle movement on the track and for substantially preventing transmission of such vibrations to the ground and to the surroundings of the track comprising, a bottom plate extending in the longitudinal direction of the track, elastic support means for supporting said bottom plate without rigid contact with the ground, at least one upper plate disposed on said bottom plate, a damping layer interposed between said bottom plate and said upper plate, and means for inhibiting relative lateral movement between said bottom plate and said upper plate, said damping layer including a layer of viscoelastic material which layer is very thin relative to the thickness of the plates, whereby shear stresses are developed in said visoelastic material when relative lateral movement takes place between the upper and bottom plates and when they oscillate in bending modes.
Claim 3
Dependent Claim
56 words
The track supporting apparatus of claim 1, wherein a body for damping substantially horizontal vibrations is disposed on said bottom plate at each side of said upper plate, said body being supported by an elastic layer, and a damping layer disposed between said upper plate and each said body, said damping layers including a visoelastic material.
Claim 4
Dependent Claim
42 words
The track supporting apparatus of claim 1 wherein said means for inhibiting lateral movement compriss shoulders directed upwardly from the bottom plate, the profile of said bottom plate being substantially U-shaped, said upper plate and said bodies being located between said shoulders.
Claim 5
Dependent Claim
22 words
The track supporting apparatus of claim 1, wherein said elastic support means for said bottom plate comprises a plurality of rubber elements.
Claim 6
Dependent Claim
20 words
The track supporting apparatus of claim 1, wherein said damping layer comprises a viscoelastic material disposed between two metal plates.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |