Patent US3687315A successfully refreshed from Google Patents.
US3687315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactor devices for wheeled vehicles
Assignee: DENFENSE
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Filing: 1970-07-22
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Granted: 1972-08-29
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Expires: 1990-07-22
Abstract
Abstract A reactor device for attachment to a wheeled towing vehicle having a crane from which an adjacent end of a casualty vehicle may be suspended incorporates a compression member attached to the towing vehicle and adapted for attachment to the adjacent end of the casualty vehicle; a tension device attached, below the compression member, to the towing vehicle and adapted for attachment to the casualty vehicle whereby a tensile force produced in the tension device will induce in the compression member a compressive force which, with said tensile force, constitutes a couple tending to increase the contact forces between the ground and front wheels of the towing vehicle.
Inventors
- 👤 John Taylor Donaldson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:20
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/12; B60P3/125; B60D; B60D1/00; B60D1/24; B60D1/36; B60D1/38
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
184 words
A reactor device for attachment to a wheeled towing vehicle having supporting means adapted to support an adjacent end of another vehicle, said reactor device comprising coupling means incorporating at least one compression device attached to the towing vehicle and adapted for attachment to the said adjacent end of the other vehicle, at leAst one tension device attached to the towing vehicle below the said compression device and adapted for attachment to the said other vehicle whereby a tensile force produced in the said tension device will induce in the said compression device a compressive force and likewise a compressive force produced in the said compression device will induce in the said tension device a tensile force constituting together with the compressive force a couple tending to increase the contact forces between the ground and those wheels of the towing vehicle which are remote from the other vehicle, and a hydro-pneumatic jacking means force and effective length controller having a constant force compliance means for maintaining a substantially constant couple in the said coupling means during small relative displacements of their respective attachment points.
Claim 2
Dependent Claim
184 words
A reactor device for attachment to a wheeled towing vehicle having supporting means adapted to support an adjacent end of another vehicle, said reactor device comprising coupling means incorporating at least one compression device attached to the towing vehicle and adapted for attachment to the said adjacent end of the other vehicle, at leAst one tension device attached to the towing vehicle below the said compression device and adapted for attachment to the said other vehicle whereby a tensile force produced in the said tension device will induce in the said compression device a compressive force and likewise a compressive force produced in the said compression device will induce in the said tension device a tensile force constituting together with the compressive force a couple tending to increase the contact forces between the ground and those wheels of the towing vehicle which are remote from the other vehicle, and a hydro-pneumatic jacking means force and effective length controller having a constant force compliance means for maintaining a substantially constant couple in the said coupling means during small relative displacements of their respective attachment points.
Claim 3
Dependent Claim
26 words
A reactor device in accordance with claim 1 in which the said jacking means is incorporated into the said tension device for changing its effective length.
Claim 4
Dependent Claim
26 words
A reactor device in accordance with claim 1 in which the said jacking means is incorporated into the said compression device for changing its effective length.
Claim 5
Dependent Claim
17 words
A reactor device in accordance with claim 1 in which said jacking means incorporates a hydraulic ram.
Claim 6
Dependent Claim
69 words
A reactor device in accordance with claim 4 in which said ram incorporates a piston and said controller incorporates a manually selectable two-way hydraulic cross-over switch which in the one position connects a high pressure hydraulic fluid to one side and in the other position to the other side of the piston to produce a differential pressure across said piston urging it to move toward the lower pressure side.
Claim 7
Dependent Claim
54 words
A reactor device in accordance with claim 5 in which said compliance comprises a closed chamber part-filled with a compressible fluid and hydraulically in communication with that side of the piston which has the higher differential pressure applied to it when the couple is being applied between said towing vehicle and said other vehicle.
Claim 8
Dependent Claim
41 words
A reactor device in accordance with claim 1 in which said supporting means comprises a crane having a jib extending toward said other vehicle and a retractable suspension cable co-operating with said jib and adapted for attachment to said other vehicle.
Claim 9
Dependent Claim
96 words
A reactor device in accordance with claim 1 in which said tensile device comprises a wire rope assembly; and which has a guide frame attached to said towing vehicle, which guide frame supports a guide means through which said wire rope assembly extends toward said other vehicle; and said compression device is a bar having an attachment pivot for attachment to said other vehicle, said guide means and said attachment pivot being arranged to lie on a common axis perpendicular to the ground to provide a correct hinging action between said two vehicles when so attached.
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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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |