US3874300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension and coupling device for the movable magnetic field unit of a linear induction motor
Assignee: Dauphinoise Electrique SA
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Filing: 1973-03-06
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Granted: 1975-04-01
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Expires: 1993-03-06
Abstract
Abstract A suspension and coupling device connecting the movable magnetic field unit straddling the stationary armature of a linear induction motor to the vehicle which moves along the armature. The weight supporting and the thrust transmitting functions of the device are substantially assumed by different parts of the device. Universal joint and slide connections between the different parts of the device permit the vehicle and the magnetic field unit to perform small relative movements one with respect to the other.
Inventors
- 👤 Jean-Pol Payen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:06
CPC Classifications
B; B60; B60L; B60L13/00; B60L13/03; B60L13/035; B61; B61B; B61B13/00; B61B13/12; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
178 words
A suspension and coupling device connecting a movable linear induction motor magnetic field unit straddling an upstanding stationary armature rail to a vehicle moving along said armature rail, comprising: a pair of substantially parallel shafts extending transversely of said vehicle and spaced in the longitudinal direction thereof adjacent the longitudinal end portions of said field unit, respectively; linkage means suspending each of said end portions from the adjacent shaft, said linkage means being pivotally connected to said end portions and to said shafts to support the weight of said field unit and to permit longitudinal rocking movements of said field unit; a pair of driving-force transmitting members projecting from said field unit adjacent said shafts, respectively, and having each a drive portion horizontally aligned with the corresponding shaft; and self-centering resilient transmission means connecting said drive portions resiliently to the corresponding shaft thereby to apply to said shafts substantial horizontal driving forces produced by said field unit and to permit to said field unit to execute said rocking movement against the action of said selfcentering resilient transmission means.
Claim 2
Dependent Claim
178 words
A suspension and coupling device connecting a movable linear induction motor magnetic field unit straddling an upstanding stationary armature rail to a vehicle moving along said armature rail, comprising: a pair of substantially parallel shafts extending transversely of said vehicle and spaced in the longitudinal direction thereof adjacent the longitudinal end portions of said field unit, respectively; linkage means suspending each of said end portions from the adjacent shaft, said linkage means being pivotally connected to said end portions and to said shafts to support the weight of said field unit and to permit longitudinal rocking movements of said field unit; a pair of driving-force transmitting members projecting from said field unit adjacent said shafts, respectively, and having each a drive portion horizontally aligned with the corresponding shaft; and self-centering resilient transmission means connecting said drive portions resiliently to the corresponding shaft thereby to apply to said shafts substantial horizontal driving forces produced by said field unit and to permit to said field unit to execute said rocking movement against the action of said selfcentering resilient transmission means.
Claim 3
Dependent Claim
49 words
A device according to claim 1, said linkage means comprising for each shaft a collar mounted for free rotation thereon and having a peripheral lug means, and rod means having opposed ends pivotally connected to said lug means and to the corresponding end portions of said field unit, respectively.
Claim 4
Dependent Claim
29 words
A device according to claim 2, said linkage means further comprising ball-and-socket and sliding means permitting limited universal motion and axial sliding of said collars relative to said shafts.
Claim 5
Dependent Claim
37 words
A device according to claim 3, said field unit carrying roller means resiliently urged against both sides of aid armature rail at both end portions of said field unit to space said field unit from said armature.
Claim 6
Dependent Claim
42 words
A device according to claim 1, further comprising a pair of side flanges depending from said vehicle, said side flanges supporting for each shaft a pair of ball-and-socket means to support the end portions of said shafts for limited universal motion thereof.
Claim 7
Dependent Claim
119 words
A device according to claim 5, said side flanges carrying slide means permitting limited longitudinal movement of one of said end portions of said shafts relative to the corresponding side flange. 7. A device according to claim 1, said linkage means comprising for each shaft a collar mounted for free rotation thereon and carrying a spring-supporting rod extending radially from said collar and traversing said drive portion substantially horizontally, both sides of said drive portion and both ends of said rod carrying spring retaining members accomodating spring means for self-centering of said drive portion between said ends of said rod, said spring means being adapted to transmit a driving force produced by said field unit to the corresponding shaft.
Claim 8
Dependent Claim
28 words
A device according to claim 7, said drive portion carrying ball-and-socket and slide means permitting limited universal and longitudinal motion of said rod relative to said drive portion.
Claim 9
Dependent Claim
46 words
A device according to claim 7, said collar having peripheral lug means, said linkage means including rod means having opposed ends pivotally connected to said lug means and to the corresponding end portion of said field unit, respectively, to suspend said field unit from said shafts.
Claim 10
Dependent Claim
30 words
A device according to claim 9, said linkage means further comprising universal joint and slide means permitting limited universal motion and axial sliding of said collars relative to said shafts.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |