CA2708815A1 - Trailer flip-down leg caster wheel and foot jack - Google Patents
Trailer flip-down leg caster wheel and foot jack Download PDFInfo
- Publication number
- CA2708815A1 CA2708815A1 CA 2708815 CA2708815A CA2708815A1 CA 2708815 A1 CA2708815 A1 CA 2708815A1 CA 2708815 CA2708815 CA 2708815 CA 2708815 A CA2708815 A CA 2708815A CA 2708815 A1 CA2708815 A1 CA 2708815A1
- Authority
- CA
- Canada
- Prior art keywords
- flip
- trailer
- tongue
- down leg
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/14—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring
- B60S9/16—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring for operating only on one end of vehicle
- B60S9/18—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring for operating only on one end of vehicle mechanically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/58—Auxiliary devices
- B60D1/66—Props
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The present invention provides an open sided flip-down leg for a trailer, or a trailer tongue, or a conversion kit thereof, being secured by a hitch pin in a transportation mode, pivots to and is secured vertically, by a catch to a front angle brace, in a storage mode. A rear jack housing, utilizing gears positioned therein, deploys a triple hinged support base with a castor wheel, mounted on its front side, which raise a tongue/frame upward facilitating attachment or disengagement of a tow bar to a towing vehicle, or for other purposes. Retraction of said hinged support base, and said castor, causes said tongue/frame to be lowered to a point of contact between said open sided flip-down leg foot plate and a ground surface.
A 100 manifestation presents a flip-down leg of hollow tube construction, housed inside and moving through an open under side of a tongue/frame to a vertical position, secured by a catch to a front angle brace, enabling its jack ground contact plate to be ratcheted or screwed down or up, utilizing an elongated square drive socket, causing a tongue/frame to raise providing assistance in attaching or detaching a towbar from a tow vehicle. "Y" configured trailer tongues having a flip-down leg at each side, may also utilize them leveling a trailer frame. A
manifestation presents a hollow deep tube flip-down leg, secured vertically by a catch to a front angle brace, having sufficient lower portion capacity to wholly or partially house a conventional or modified, retracted top sidewinder trailer jack, which may be deployed to raise the tongue/frame and provide a castor wheel for mobility.
A 100 manifestation presents a flip-down leg of hollow tube construction, housed inside and moving through an open under side of a tongue/frame to a vertical position, secured by a catch to a front angle brace, enabling its jack ground contact plate to be ratcheted or screwed down or up, utilizing an elongated square drive socket, causing a tongue/frame to raise providing assistance in attaching or detaching a towbar from a tow vehicle. "Y" configured trailer tongues having a flip-down leg at each side, may also utilize them leveling a trailer frame. A
manifestation presents a hollow deep tube flip-down leg, secured vertically by a catch to a front angle brace, having sufficient lower portion capacity to wholly or partially house a conventional or modified, retracted top sidewinder trailer jack, which may be deployed to raise the tongue/frame and provide a castor wheel for mobility.
Description
TRAILER FLIP-DOWN LEG CASTOR WHEEL AND FOOT JACK
FIELD OF THE INVENTION
The present invention relates to a towable apparatus such as a trailer or a trailer tongue, or conversion kit thereof, that may be used in transporting any type of equipment, goods or materials.
BACKGROUND OF THE INVENTION
Prior art trailer designs and components work adequately for lightweight trailer applications, but do not incorporate a means for lifting and supporting heavier tongues to assist in moving and disconnecting a towbar from a tow vehicle, positioning the trailer and re-connecting.
Current trailer frames using a "Y" configured tongue, may utilize the present invention on both sides of a frame to raise and level it as desired. The single pole security trailer tongue also uses a flip-down leg to provide ground support in a storage mode. However, heavier applications require a swivel or other trailer jack to raise the trailer frame/tongue and to provide a castor wheel to facilitate attachment or disconnection of a tow bar to a tow vehicle.
The present invention evolved from Canadian patent No. 2,460,262 MULTIPLE
USE ADJUSTABLE SECURITYY TRAILER FOR TRANSPORTATION, STORAGE AND
HOUSING, (U. S. No. 7,458,597 B2) and Canadian application No. 2,567,427 FOLDING, SUPPORT AND SECURITY TRAILER TONGUE, both of which utilize a standard flip-down leg for a convenient change-over from a transportation to a storage mode.
SUMMARY OF THE INVENTION
The present invention overcomes the problems of prior art by expanding the function of the flip-down leg, already standing vertical and resting on a ground surface, to include raising and lowering the tongue/frame and providing a castor wheel with which to assist in maneuvering a detached trailer.
It is an object of the present invention to provide an open sided flip-down leg which, in a vertical position, utilizes a rear jack housing positioned and secured to its front side.
Another object of the present invention to provide an open sided flip-down leg which, in a vertical position, utilizes a hinged support base positioned and secured near its lower end.
It is also an object of the present invention to provide an open sided flip-down leg with a rotating castor wheel centrally mounted on a hinged support base front side.
FIELD OF THE INVENTION
The present invention relates to a towable apparatus such as a trailer or a trailer tongue, or conversion kit thereof, that may be used in transporting any type of equipment, goods or materials.
BACKGROUND OF THE INVENTION
Prior art trailer designs and components work adequately for lightweight trailer applications, but do not incorporate a means for lifting and supporting heavier tongues to assist in moving and disconnecting a towbar from a tow vehicle, positioning the trailer and re-connecting.
Current trailer frames using a "Y" configured tongue, may utilize the present invention on both sides of a frame to raise and level it as desired. The single pole security trailer tongue also uses a flip-down leg to provide ground support in a storage mode. However, heavier applications require a swivel or other trailer jack to raise the trailer frame/tongue and to provide a castor wheel to facilitate attachment or disconnection of a tow bar to a tow vehicle.
The present invention evolved from Canadian patent No. 2,460,262 MULTIPLE
USE ADJUSTABLE SECURITYY TRAILER FOR TRANSPORTATION, STORAGE AND
HOUSING, (U. S. No. 7,458,597 B2) and Canadian application No. 2,567,427 FOLDING, SUPPORT AND SECURITY TRAILER TONGUE, both of which utilize a standard flip-down leg for a convenient change-over from a transportation to a storage mode.
SUMMARY OF THE INVENTION
The present invention overcomes the problems of prior art by expanding the function of the flip-down leg, already standing vertical and resting on a ground surface, to include raising and lowering the tongue/frame and providing a castor wheel with which to assist in maneuvering a detached trailer.
It is an object of the present invention to provide an open sided flip-down leg which, in a vertical position, utilizes a rear jack housing positioned and secured to its front side.
Another object of the present invention to provide an open sided flip-down leg which, in a vertical position, utilizes a hinged support base positioned and secured near its lower end.
It is also an object of the present invention to provide an open sided flip-down leg with a rotating castor wheel centrally mounted on a hinged support base front side.
It is an object of the present invention to provide an open sided flip-down leg, wherein rotation of gears within a rear jack housing, causes deployment of a castor wheel.
A further object of the present invention to provide an open sided flip-down leg, in which downward deployment of a castor wheel raises a trailer tongue/frame.
It is an object of the present invention to provide a front angle brace catch to hold an open sided flip-down leg, preventing pivoting movement, in a vertical position.
It is an object of the present invention to provide an open sided flip down leg rear jack housing with a rotating drive handle to manually extend the rear section of the hinged support base, positioning the castor wheel at the bottom in a deployed position.
Another object of the present invention is to provide an open sided flip-down leg wherein a rear jack housing with rotating drive handle, to manually withdraw the rear section of a hinged support base.
It is an object of the present invention to provide an open sided flip-down leg, with castor wheel deployed, enabling a tongue/frame to be moved as desired.
A further object of the present invention to provide an open sided flip-down leg, in which downward deployment of a castor wheel raises a trailer tongue/frame.
It is an object of the present invention to provide a front angle brace catch to hold an open sided flip-down leg, preventing pivoting movement, in a vertical position.
It is an object of the present invention to provide an open sided flip down leg rear jack housing with a rotating drive handle to manually extend the rear section of the hinged support base, positioning the castor wheel at the bottom in a deployed position.
Another object of the present invention is to provide an open sided flip-down leg wherein a rear jack housing with rotating drive handle, to manually withdraw the rear section of a hinged support base.
It is an object of the present invention to provide an open sided flip-down leg, with castor wheel deployed, enabling a tongue/frame to be moved as desired.
Another object of the present invention provides for an open sided flip-down leg wherein counter rotation causes complete retraction of a hinged support base and attached castor wheel.
Accordingly the present invention provides an open sided flip-down leg pivotably secured at a pivot means and pivot pin to a tongue/frame in which half-way withdrawal of a hitch pin, utilizing aligned and open hitch means, will drop to a vertical position; this action enables its foot plate to contact a ground surface for support, and be secured to a front angle brace by a catch, leaving a pivoting tongue with towbar/coupler in a transportation mode; rotating the handle causes a rack and pinion, or other preferred means, to move outward from a rear jack housing, activating a triple hinged support base, causing a castor wheel to pivot on its hinges approximately 90 degrees, raising and providing mobility for a tongue/frame; reversing rotation of the handle causes the flip-down leg to return to its original storage position.
A further object of the present invention is to provide a 100 variation or the present invention wherein a jacking mechanism is positioned inside a hollow tube flip-down leg, which in a vertical position, utilizing an elongated square drive socket is ratchet/screwed downward, thereby raising, lowering or supporting the tongue/frame to assist in attaching or detaching a towbar from a tow vehicle.
Accordingly the present invention provides an open sided flip-down leg pivotably secured at a pivot means and pivot pin to a tongue/frame in which half-way withdrawal of a hitch pin, utilizing aligned and open hitch means, will drop to a vertical position; this action enables its foot plate to contact a ground surface for support, and be secured to a front angle brace by a catch, leaving a pivoting tongue with towbar/coupler in a transportation mode; rotating the handle causes a rack and pinion, or other preferred means, to move outward from a rear jack housing, activating a triple hinged support base, causing a castor wheel to pivot on its hinges approximately 90 degrees, raising and providing mobility for a tongue/frame; reversing rotation of the handle causes the flip-down leg to return to its original storage position.
A further object of the present invention is to provide a 100 variation or the present invention wherein a jacking mechanism is positioned inside a hollow tube flip-down leg, which in a vertical position, utilizing an elongated square drive socket is ratchet/screwed downward, thereby raising, lowering or supporting the tongue/frame to assist in attaching or detaching a towbar from a tow vehicle.
Another object of the present invention is to provide a 200 variation of the present invention wherein the hollow tube flip down leg is of sufficient width and depth to house a top sidewinder trailer jack with castor wheel, built or installed partially or fully inside which may be deployed to raise the tongue/frame to provide mobility.
Accordingly the present invention provides an open sided flip-down leg for a trailer tongue/frame, wherein a rear jack housing and a hinged support base, having a castor wheel mounted on its front side, in a transportation mode; manual or mechanical manipulation providing geared movement to deploy said hinged support base, positioning said castor wheel at the lower end, raising said tongue/frame providing mobility to an unattached trailer.
Accordingly, the 100 manifestation of the present invention provides a hollow tube flip-down leg, vertically positioned, wherein its jack ground plate is ratcheted or screwed down, utilizing an elongated square drive socket, to raise and support a trailer tongue/frame, and where applicable, both sides of a frame for leveling.
Accordingly, the 200 manifestation of the present invention provides a hollow deep tube flip-down leg, secured vertically by a catch attached to a front angle brace, in which its lower portion wholly or partially houses a conventional or modified retracted top sidewinder trailer jack, with or without a castor wheel, which may be deployed and retracted as desired.
Accordingly the present invention provides an open sided flip-down leg for a trailer tongue/frame, wherein a rear jack housing and a hinged support base, having a castor wheel mounted on its front side, in a transportation mode; manual or mechanical manipulation providing geared movement to deploy said hinged support base, positioning said castor wheel at the lower end, raising said tongue/frame providing mobility to an unattached trailer.
Accordingly, the 100 manifestation of the present invention provides a hollow tube flip-down leg, vertically positioned, wherein its jack ground plate is ratcheted or screwed down, utilizing an elongated square drive socket, to raise and support a trailer tongue/frame, and where applicable, both sides of a frame for leveling.
Accordingly, the 200 manifestation of the present invention provides a hollow deep tube flip-down leg, secured vertically by a catch attached to a front angle brace, in which its lower portion wholly or partially houses a conventional or modified retracted top sidewinder trailer jack, with or without a castor wheel, which may be deployed and retracted as desired.
Additional objects and advantages may become apparent from a careful reading of the detailed description provided herein, with appropriate reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the invention will be described below with reference to the accompanying drawings, in which:
Figure 1 is a detailed rear-angled view illustrating a trailer tongue/frame in a transportation mode, with its open sided flip-down leg in a storage mode with castor wheel deployed and a view in its transportation mode, according to one embodiment of the present invention;
Figure 2 is a side view of an open sided flip-down leg, with cutaway view of a rear jack housing, in a retracted position;
Figure 3 is a front end view of an open sided flip-down leg illustrating its components in a fully deployed position;
Figure 4 is a side view of an open sided flip-down leg a fully deployed position;
Figure 5 is a partial cutaway side view of the 100 manifestation of the present invention in which a hollow tube flip-down leg is illustrated in a retracted position;
Figure 6 is an enlarged end view of the 100 manifestation of the present invention in which positioning of hollow tube flip-down leg components are illustrated;
BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the invention will be described below with reference to the accompanying drawings, in which:
Figure 1 is a detailed rear-angled view illustrating a trailer tongue/frame in a transportation mode, with its open sided flip-down leg in a storage mode with castor wheel deployed and a view in its transportation mode, according to one embodiment of the present invention;
Figure 2 is a side view of an open sided flip-down leg, with cutaway view of a rear jack housing, in a retracted position;
Figure 3 is a front end view of an open sided flip-down leg illustrating its components in a fully deployed position;
Figure 4 is a side view of an open sided flip-down leg a fully deployed position;
Figure 5 is a partial cutaway side view of the 100 manifestation of the present invention in which a hollow tube flip-down leg is illustrated in a retracted position;
Figure 6 is an enlarged end view of the 100 manifestation of the present invention in which positioning of hollow tube flip-down leg components are illustrated;
Figure 7 is a side view of the 100 manifestation of the present invention in which the configuration of both guide washers are illustrated;
Figure 8 is a partial cut away side view of the 100 manifestation of the present invention illustrating a hollow tube flip-down leg in a fully extended position;
Figure 9 is a side view of the 200 manifestation of the present invention illustrating a hollow deep tube flip-down leg in an extended position and a view in a retracted position.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to Figure 1, the open side (4) of flip-down leg (15) being pivotably secured to tongue/frame (1) at pivot means (6) and pivot pin (12), upon half-way withdrawal of hitch pin (8) utilizing aligned hitch means (7) and open hitch means (9), will drop to a vertical position, enabling foot plate (13) to contact a ground surface, and be secured to front angle brace (20) by catch (21), while leaving pivoting tongue (3) with towbar/coupler (19) in a transportation mode.
Referring to Figures 2, 3 and 4, front angle brace catch (21) is attached, securing flip-down leg (15) in a vertical position, utilizing foot plate (13) as ground support, enabling handle (17) to be turned causing rack and pinion (14) to move outward from rear jack housing (2) activating triple hinged support base (16) causing castor wheel (5) to pivot on hinges approximately 90 degrees, raising and providing mobility for tongue/frame (1). Reverse rotation of handle (17) causes flip-down leg (15) to return to its initial storage position.
Referring now to manifestation 100 of the present invention, illustrated in Figures 5,6,7 and 8 wherein a hollow tube flip-down leg (101) raises a trailer tongue or frame upward, applying ratchet or other power, rotating flexible drive connector (113) securely attached to elongated square drive socket (104) having a secure connection (114) being held and functioning between upper guide washer (115) and lower guide washer (112). Rotation causes square head screw leg (105) to feed through interior threaded screw guide (108) near its lower end, extending jack ground contact plate (102), thereby utilizing pivot means (106) raising a trailer tongue or frame, to be supported there until reversed and returned to its original position.
Referring now to manifestation 200 of the present invention, illustrated in Figure 9 in which a lower portion of a hollow deep tube flip-down leg (201), wholly or partially houses a conventional or modified retracted top sidewinder trailer jack with castor wheel (202), in a horizontal transportation mode, being released utilizing hitch means (205) and (206), and pivot means (204) dropping to a vertical position, secured by front angle brace catch (207) enabling jack handle (203) to be rotated to facilitate deployment and retraction of castor wheel (202), thereby providing mobility and raising and lowering the trailer tongue or frame.
Figure 8 is a partial cut away side view of the 100 manifestation of the present invention illustrating a hollow tube flip-down leg in a fully extended position;
Figure 9 is a side view of the 200 manifestation of the present invention illustrating a hollow deep tube flip-down leg in an extended position and a view in a retracted position.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to Figure 1, the open side (4) of flip-down leg (15) being pivotably secured to tongue/frame (1) at pivot means (6) and pivot pin (12), upon half-way withdrawal of hitch pin (8) utilizing aligned hitch means (7) and open hitch means (9), will drop to a vertical position, enabling foot plate (13) to contact a ground surface, and be secured to front angle brace (20) by catch (21), while leaving pivoting tongue (3) with towbar/coupler (19) in a transportation mode.
Referring to Figures 2, 3 and 4, front angle brace catch (21) is attached, securing flip-down leg (15) in a vertical position, utilizing foot plate (13) as ground support, enabling handle (17) to be turned causing rack and pinion (14) to move outward from rear jack housing (2) activating triple hinged support base (16) causing castor wheel (5) to pivot on hinges approximately 90 degrees, raising and providing mobility for tongue/frame (1). Reverse rotation of handle (17) causes flip-down leg (15) to return to its initial storage position.
Referring now to manifestation 100 of the present invention, illustrated in Figures 5,6,7 and 8 wherein a hollow tube flip-down leg (101) raises a trailer tongue or frame upward, applying ratchet or other power, rotating flexible drive connector (113) securely attached to elongated square drive socket (104) having a secure connection (114) being held and functioning between upper guide washer (115) and lower guide washer (112). Rotation causes square head screw leg (105) to feed through interior threaded screw guide (108) near its lower end, extending jack ground contact plate (102), thereby utilizing pivot means (106) raising a trailer tongue or frame, to be supported there until reversed and returned to its original position.
Referring now to manifestation 200 of the present invention, illustrated in Figure 9 in which a lower portion of a hollow deep tube flip-down leg (201), wholly or partially houses a conventional or modified retracted top sidewinder trailer jack with castor wheel (202), in a horizontal transportation mode, being released utilizing hitch means (205) and (206), and pivot means (204) dropping to a vertical position, secured by front angle brace catch (207) enabling jack handle (203) to be rotated to facilitate deployment and retraction of castor wheel (202), thereby providing mobility and raising and lowering the trailer tongue or frame.
Claims (8)
1. An open sided flip-down leg which supports a trailer frame, or a trailer tongue, or a conversion kit thereof, being secured in a vertical position by a catch attached to a front angle brace, which on its front side, houses, deploys and retracts a jacking device, incorporating a castor wheel;
a 100 manifestation of the present invention provides a hollow open tube flip-down leg which, being secured vertically by a catch attached to a front angle brace, ensuring stable positioning during raising and lowering by a jacking device housed therein;
said jacking device utilizes a positioned and secured elongated square drive socket, rotation of which causes said trailer frame/tongue to be raised, and counter rotation of which causes it to be lowered, providing ground support;
said jacking device, positioned at both sides of a trailer frame having a""Y"
configured tongue may also be utilized for raising or lowering, and for leveling.
a 200 manifestation of the present invention provides a hollow deep tube flip-down leg, secured vertically by a catch attached to a front angle brace, in which its lower portion wholly or partially houses a conventional or modified retracted top sidewinder trailer jack, with or without a castor wheel, which may be deployed and retracted as desired.
a 100 manifestation of the present invention provides a hollow open tube flip-down leg which, being secured vertically by a catch attached to a front angle brace, ensuring stable positioning during raising and lowering by a jacking device housed therein;
said jacking device utilizes a positioned and secured elongated square drive socket, rotation of which causes said trailer frame/tongue to be raised, and counter rotation of which causes it to be lowered, providing ground support;
said jacking device, positioned at both sides of a trailer frame having a""Y"
configured tongue may also be utilized for raising or lowering, and for leveling.
a 200 manifestation of the present invention provides a hollow deep tube flip-down leg, secured vertically by a catch attached to a front angle brace, in which its lower portion wholly or partially houses a conventional or modified retracted top sidewinder trailer jack, with or without a castor wheel, which may be deployed and retracted as desired.
2. The open sided flip-down leg of claim 1 wherein vertical secure positioning is attained by utilizing a front angle brace catch, preventing movement or pivoting.
3. The open sided flip-down leg of claim 1 or 2 wherein a rear jack housing is secured to its front side in a vertical position.
4. The hollow open tube flip-down leg 100 manifestation of claim 1 wherein vertical secured positioning is attained by utilizing a front angle brace catch, preventing pivoting or other movement.
5. The hollow open tube flip-down leg of either claims 1 or 4 in which a jacking device incorporates an elongated square drive socket of sufficient depth to adequately raise a trailer frame, trailer tongue or conversion kit thereof.
6. The hollow open tube flip-down leg of any of claims 1, 4 or 5 in which a jacking device, positioned at both sides of a trailer frame having a "Y"
configured tongue, may also be utilized in raising, lowering, and leveling purposes.
configured tongue, may also be utilized in raising, lowering, and leveling purposes.
7. The hollow deep tube flip-down leg 200 manifestation of claim 1 wherein vertical secured positioning is attained by utilizing a front angle brace catch attached to a front angle brace.
8. The hollow deep tube flip-down leg of claim 1 or 7 in which its lower portion wholly or partially houses a conventional or modified retracted top sidewinder trailer jack, with or without a castor wheel, which may be deployed and retracted as desired.
INDUSTRIAL APPLICABILITY
Consumers in the current utility trailer marketplace are accustomed to the convenience of supporting a trailer tongue with a jack, and for heavier weighted units, one that includes a castor wheel for mobility.
The 100 manifestation of the present invention provides a jacking device to raise and supporting light weight tongues to assist in detachment or hookup from a tow vehicle. It will also serve at both sides of a trailer frame having a "Y"
configured tongue in many applications, e.g. highway arrow boards, message boards, etc.
The 200 manifestation provides a jack, not bolted on a side of a tongue, but hidden inside a flip-down leg, and is quicker and more convenient than conventional swivel jacks with castors, as it is already at ground level, only needing to be lowered enough to raise the tongue and deploy the castor wheel.
INDUSTRIAL APPLICABILITY
Consumers in the current utility trailer marketplace are accustomed to the convenience of supporting a trailer tongue with a jack, and for heavier weighted units, one that includes a castor wheel for mobility.
The 100 manifestation of the present invention provides a jacking device to raise and supporting light weight tongues to assist in detachment or hookup from a tow vehicle. It will also serve at both sides of a trailer frame having a "Y"
configured tongue in many applications, e.g. highway arrow boards, message boards, etc.
The 200 manifestation provides a jack, not bolted on a side of a tongue, but hidden inside a flip-down leg, and is quicker and more convenient than conventional swivel jacks with castors, as it is already at ground level, only needing to be lowered enough to raise the tongue and deploy the castor wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2708815 CA2708815A1 (en) | 2010-07-06 | 2010-07-06 | Trailer flip-down leg caster wheel and foot jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2708815 CA2708815A1 (en) | 2010-07-06 | 2010-07-06 | Trailer flip-down leg caster wheel and foot jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2708815A1 true CA2708815A1 (en) | 2012-01-06 |
Family
ID=45442692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2708815 Abandoned CA2708815A1 (en) | 2010-07-06 | 2010-07-06 | Trailer flip-down leg caster wheel and foot jack |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2708815A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106827983A (en) * | 2017-01-20 | 2017-06-13 | 贵州大学 | A kind of auxiliary extension bar device of vehicle mechanical |
| CN113085797A (en) * | 2021-04-25 | 2021-07-09 | 湖南工学院 | Engineering vehicle and vehicle protection device with variable supporting legs |
-
2010
- 2010-07-06 CA CA 2708815 patent/CA2708815A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106827983A (en) * | 2017-01-20 | 2017-06-13 | 贵州大学 | A kind of auxiliary extension bar device of vehicle mechanical |
| CN113085797A (en) * | 2021-04-25 | 2021-07-09 | 湖南工学院 | Engineering vehicle and vehicle protection device with variable supporting legs |
| CN113085797B (en) * | 2021-04-25 | 2022-03-22 | 湖南工学院 | Engineering vehicle and vehicle protection device with variable supporting legs |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20140708 |