Patent US3589748A successfully refreshed from Google Patents.
US3589748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizing apparatus for a trailer or like vehicle
Assignee: Individual
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Filing: 1969-08-11
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Granted: 1971-06-29
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Expires: 1989-08-11
Abstract
Abstract Apparatus mountable to the frame of a trailer or a like vehicle for stabilizing and leveling the trailer when parked. The stabilizing and leveling apparatus includes a pair of jacks, each having a housing part and a power-actuated pod which projects from one end of the housing part and which is shiftable between a ground-engaging extended position and a retracted position. The jacks are adapted for mounting on opposite sides of the trailer frame, with each jack having its housing part pivotally connected to the trailer frame so as to be swingable between stored and operative positions. Cable means are provided for causing movement of the jacks between stored and operative positions. An actuator adapted for mounting to the trailer at a convenient and accessible location is provided and includes parts connected to the cable means which, upon actuation, cause a shifting of the cable means and the movement of the jacks between stored and operative positions. The actuator also includes power delivery means, such as a hydraulic pump, operatively connected to each jack to cause extension of the jack pod when the jack is in its operative position and to cause retraction of the pod in preparation to place the jack in its stored position.
Inventors
- 👤 Milo E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:19
CPC Classifications
B; B62; B62D; B62D63/00; B62D63/06; B62D63/08; B60; B60S; B60S9/00; B60S9/02; B60S9/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
185 words
Apparatus mountable to the frame of a trailer or a like vehicle for stabilizing said trailer when parKed comprising: A pair of jacks each having a housing part and a groundengageable foot part projecting from one end of said housing part and shiftable between extended and retracted positions relative to said housing part; means for positioning said jacks at opposite sides of said trailer with the housing part of each jack pivotally connected to said trailer frame so as to be swingable between stored and operative positions; a control box attachable to said trailer; first and second actuator means carried by said control box; a flexible connector interconnecting said jacks and said first actuator means, said flexible connector being shiftable on operation of said first actuator means to cause pivotal movement of said jacks between stored and operative positions thereof; each jack including a power delivery means which upon actuation causes the foot part associated therewith to shift between said extended and retracted positions; and said second actuator means being operatively connected to each power delivery means for causing said actuation of said delivery means.
Claim 2
Dependent Claim
185 words
Apparatus mountable to the frame of a trailer or a like vehicle for stabilizing said trailer when parKed comprising: A pair of jacks each having a housing part and a groundengageable foot part projecting from one end of said housing part and shiftable between extended and retracted positions relative to said housing part; means for positioning said jacks at opposite sides of said trailer with the housing part of each jack pivotally connected to said trailer frame so as to be swingable between stored and operative positions; a control box attachable to said trailer; first and second actuator means carried by said control box; a flexible connector interconnecting said jacks and said first actuator means, said flexible connector being shiftable on operation of said first actuator means to cause pivotal movement of said jacks between stored and operative positions thereof; each jack including a power delivery means which upon actuation causes the foot part associated therewith to shift between said extended and retracted positions; and said second actuator means being operatively connected to each power delivery means for causing said actuation of said delivery means.
Claim 3
Dependent Claim
67 words
The stabilizing apparatus of claim 1 wherein each power delivery means includes a cylinder and a piston having a said foot part connected thereto shiftable within said cylinder, said second actuator means including a hydraulic pump and conduits connecting said pump to said cylinder, said pump upon actuation serving to direct hydraulic fluid contained within said pump into each cylinder for causing shifting of said piston therein.
Claim 4
Dependent Claim
64 words
The stabilizing apparatus of claim 1 and including support means adapted to extend transversely of said trailer for connection to said frame adjacent the underside thereof, said support means including inverted U-shaped channel portions adapted for positioning at opposite sides of said trailer, each housing part having its opposite end disposed within a said channel portion between the sidewalls thereof and pivotally connected thereto.
Claim 5
Dependent Claim
79 words
The stabilizing apparatus of claim 3 wherein the pivot connection of each housing part is spaced inwardly from the outer margin of said connecting channel portion, guide means connected to each channel portion and located outwardly from the housing part pivot connection thereto, said flexible connector including cables each having one end portion trained over a said guide means and connected to a said housing part at a location thereon spaced from the pivot connection of the housing part.
Claim 6
Dependent Claim
26 words
The stabilizing apparatus of claim 4 wherein each jack when shifted into its stored position is received within said connecting channel portion between the sides thereof.
Claim 7
Dependent Claim
38 words
The stabilizing apparatus of claim 5 and stop means connected to each channel portion for positioning said connected jack in a downwardly inclined, outwardly directed orientation relative to said frame when said jack is in its operative position.
Claim 8
Dependent Claim
66 words
The stabilizing apparatus of claim 1 wherein said jacks are adapted to be oppositely positioned on said trailer with each jack swingable in a substantially vertical plane between said stored position in which the jack is outwardly directed relative to said frame in substantially horizontal orientation and said operative position in which the jack is outwardly directed relative to said frame in a downwardly inclined orientation.
Claim 9
Dependent Claim
99 words
The stabilizing apparatus of claim 1 wherein said first actuator means includes a lever pivoted to said control box and having a protruding handle part, said flexible connector being attached to said lever so as to be shiftable upon pivotal movement of said lever by actuation of its handle part, said control box including a cover having an opening therein, said handle part being received within said cover opening and restricted from movement so as to prevent movement of said lever when the jacks are in their stored positions and the cover closed, and means locking said cover closed.
Claim 10
Dependent Claim
72 words
The jack apparatus of claim 8 wherein said second actuator means includes an elongated detachable actuating handle, said control box including a receptacle having a panel part with an aperture therein, said cover being hinged to said receptacle and having an aperture therein which registers with the aperture in said receptacle when said cover is closed, said detachable lever being adapted for insertion through said registering apertures to lock said cover closed.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |