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Class 254/419 - Semi-trailer landing gear


Subclass of Class 254 - Implements or apparatus for applying pushing or pulling force
Definition: Device wherein the jack supports the front end of a semi-trailer
No. of patents: 78
Last issue date: 01/17/2012


1    
NumberTitleIssue Date
8096529Semitrailer landing gear
A semitrailer landing gear, particularly for supporting trailers, including a supporting element, which can be telescopically displaced in the height thereof and which has an outer sleeve and an inner sleeve, the outer sleeve having a fastening flange for placing on...
01/17/2012
7398959Apparatus for supporting the trailer of a tractor-semitrailer
An apparatus for supporting a trailer of a tractor semitrailer has a supporting element that is telescopically adjustable by way of a gear shifting mechanism having a gear input shaft running vertically onto a spindle. In this way, the supporting element has an espe...
07/15/2008
7380825Landing gear and method of assembly
Landing gear for selectively supporting a semitrailer and a method of assembly of the landing gear is provided. The landing gear includes a leg having an upper section and a lower section telescopingly received in the upper section. A lead screw extends and retracts...
06/03/2008
7377488Telescoping landing gear
A landing gear assembly comprises a first leg member adapted to couple to a vehicle frame member, and a second member operably coupled to the first leg member and moveable between a raised storage position and a lowered in-use position. The landing gear assembly fur...
05/27/2008
7370844Universal utility trailer tilter
The “Universal Utility Trailer” Tilter is designed to be portable and lightweight. This will enable the user to insert it into a standard 2″ receiver hitch on a tow vehicle. Upon attaching the Trailer Tilter to the vehicle the operator can attach any one of a ...
05/13/2008
7338052Trailer stabilizing device and method of using same
An apparatus and method for stabilizing a stationary trailer. One embodiment of the device comprises a jack and a stabilizing member. The jack attaches to the bottom of the trailer, such that when the jack is extended, a base component of the jack engages the ground...
03/04/2008
7325786Multi-speed drop leg mechanical jack for use with a trailer
A mechanical jack that is used with trailers that has a functional combination of several working gears as well as a drop leg feature is disclosed. The mechanical jack has a gearbox having gears that not only have the capacity to handle a relatively heavy load, but ...
02/05/2008
7311331Method and apparatus for raising and lowering a trailer
A combination is disclosed having a trailer, telescoping support members, and a drive. The drive has a motor and a drive shaft, and the drive shaft has a first end portion affixed to a first cross member and a second end portion affixed to a second cross member. The...
12/25/2007
7311332Speed crank locking device for trailer landing gear assembly
A speed crank locking device automatically secures a hand crank in its operative position to an input shaft of a gearing mechanism, with the locking device being easily disengaged to move the crank from its operative position to a stored position following rotation ...
12/25/2007
7303210Secure crank locking device for trailer landing gear assembly
A secured crank locking device automatically secures a hand crank in its operative position to an input shaft of a gearing mechanism, with the locking device being easily disengaged to move the crank from its operative position to a stored position following rotatio...
12/04/2007
7290799Disposition introduced to hydropneumatic jack
“DISPOSITION INTRODUCED TO HYDROPNEUMATIC JACK”, according to description of the report and the annexed illustrations, it is about a new disposition for a hydropneumatic device that is used to lift and support hauler and semi-haulers, whereby the device was desi...
11/06/2007
7268646Temperature controlled MEMS resonator and method for controlling resonator frequency
There are many inventions described and illustrated herein. In one aspect, the present invention is directed to a temperature compensated microelectromechanical resonator as well as fabricating, manufacturing, providing and/or controlling microelectromechanical reso...
09/11/2007
7260902Jack for a working implement and method
Jack for raising and lowering a working implement such as hydraulically driven snow blades or other utilitarian accessories. Actuation of the jack allows for proper vertical alignment of the lift assembly for engagement to a vehicle chassis. Once engaged, the jack c...
08/28/2007
7258363Landing gear assembly for a trailer
A landing gear assembly for supporting a trailer. The landing gear assembly having first and second legs and a connecting member. Each leg is configured to selectively extend and retract in length. The connecting member operatively connects the first and second legs...
08/21/2007
7243747Trailer provided with manoeuvring device
A trailer provided with a manoeuvring device. The manoeuvring device has a pivoting frame that can be moved with respect to the chassis of a trailer, such as a caravan, and is provided at the end with a roller driven by an electric motor. This roller does not engage...
07/17/2007
7228650Jack for a working implement and method
Jack for raising and lowering a working implement such as hydraulically driven snow blades or other utilitarian accessories. Actuation of the jack allows for proper vertical alignment of the lift assembly for engagement to a vehicle chassis. Once engaged, the jack c...
06/12/2007
7207599Cross shaft for semitrailer landing gear
A landing gear having a telescopic cross shaft extending between the cylindrical stub shafts protruding from both screw jacks thereof. The telescopic cross shaft is made of square structural tubing. The telescopic cross shaft has a pair of end-casing members and a c...
04/24/2007
7182368Supporting leg for vehicle transporting exchangeable containers
A supporting leg for a vehicle that transports exchangeable containers comprises two telescopic tubes and a pneumatic drive for retracting and extending one of the tubes. Thread-type or annular bearing parts comprising a horizontal bearing surface are configured on ...
02/27/2007
7163207Demountable drive mechanism
A demountable drive mechanism for coupling to a drive shaft of an operating device, the drive mechanism being directly secured to the drive shaft to cause the drive shaft to rotate, the drive mechanism comprising a geared electric motor having an output for coupling...
01/16/2007
7152848Telescoping leg assembly for semitrailers
A thrust bearing for receiving thrust loads along the axis of a rotating shaft. The thrust bearing comprising a first bearing member having a race, a second bearing member having a race and ball bearings received in the races of the first and second bearing members ...
12/26/2006
7150472Dual mode outrigger for a boom truck or the like
A dual mode A-frame outrigger for a boom truck or the like is provided wherein the outrigger may be operated in conventional fashion or which may be pinned to the side of the boom truck or the like so that the outrigger assembly may be used to stabilize or level the...
12/19/2006
7103995Jack for a working implement and method
Jack for raising and lowering a working implement such as hydraulically driven snow blades or other utilitarian accessories. Actuation of the jack allows for proper vertical alignment of the lift assembly for engagement to a vehicle chassis. Once engaged, the jack c...
09/12/2006
7097158Lift mechanism for fifth wheel trailer tube and foot pad
A lift mechanism for a fifth wheel trailer tube and foot pad that is both functional and accessible. A tee handle is made with curved ends and a smooth finish, making it comfortable to grip when lowering or raising the foot pad assembly. A telescoping tube is hollow...
08/29/2006
7083196Height-adjustable support for semitrailers or the like
A height-adjustable support for semitrailers, having a stationary outer support tube, an inner support tube, which is arranged in a longitudinally displaceable manner therein, and a gearbox output shaft, on which is seated in a rotationally fixed manner a bevel whee...
08/01/2006
7068125Temperature controlled MEMS resonator and method for controlling resonator frequency
There are many inventions described and illustrated herein. In one aspect, the present invention is directed to a temperature compensated microelectromechanical resonator as well as fabricating, manufacturing, providing and/or controlling microelectromechanical reso...
06/27/2006
7055859Landing gear and method of assembly
Landing gear for selectively supporting a semitrailer and a method of assembly of the landing gear is provided. The landing gear includes a leg having an upper section and a lower section telescopingly received in the upper section. A lead screw extends and retracts...
06/06/2006
7036847Arrangement of a motor on a support winch
An arrangement of a motor on twin landing gears is described. The landing gears are interconnected via a connecting shaft and can be telescoped by starting up the motor. To minimize damage to the motor and at the same time to ensure cost-effective production, it is ...
05/02/2006
7025332Mechanical arm assembly and method therefor
A mechanical arm includes a base that mount on a selected support. A proximal arm member has a proximal end portion pivotally secured to the base and a distal end portion pivotally secured to a distal arm member. The base has a first fixed gear element disposed ther...
04/11/2006
7021659Semi-trailer landing gear ratcheting apparatus
A manual cranking apparatus for the landing gear of a semi-trailer. The cranking apparatus includes a rotatable mechanism that is permanently connected to the cross-shaft of the landing gear. The rotatable mechanism is adapted to be folded such that, in storage posi...
04/04/2006
7017701Inclination-measuring device
An inclination-measuring apparatus for use with a motor vehicle includes a rotary sensor connected to the motor vehicle, the rotary sensor selected from one of a rotary position sensor and a rotary angle sensor, a pendulum and a controller. The pendulum has a pendul...
03/28/2006
6994325Height-adjustable support for semitrailers or the like
A height-adjustable support for semitrailers, having a stationary outer support tube, an inner support tube, which is arranged in a longitudinally displaceable manner therein, and a gearbox output shaft, on which is seated in a rotationally fixed manner a bevel whee...
02/07/2006
6948702Trailer hydraulic lift
A hydraulic lift for a truck trailer, having a pair of hydraulic cylinders mounted to the under side of a semi-trailer. The bottom of the cylinder pistons are connected to a foot, which sits on the ground. A telescoping jackstand positioned between the two cylinders...
09/27/2005
6926261Trailer tongue jack
A trailer tongue jack includes a grease (or zerk) fitting for providing grease to internal parts The jack includes an outer tube and an inner telescoping tube. A threaded insert (or nut) is fixedly attached inside an upper end of the inner telescoping tube. A screw ...
08/09/2005
6926305Air, electric and hydraulic landing gear jack
A trailer landing gear drive system in which pneumatic, hydraulic and electric motors, as well as the traditional hand crank, are easily interchangeable. The landing gear jack mechanism is disposed to easily connect to any one of these drive motors. The system can u...
08/09/2005
6896289Hydraulically operable landing gear
A vertically adjustable landing gear system for a trailer includes a pair of vertically adjustable lifts, a hydraulic motor having a pair of rotational outputs and a pair of landing gear drive shafts, each rotationally engaging one of the respective lifts and one of...
05/24/2005
6893006Multi-speed drop leg mechanical jack for use with a trailer
A mechanical jack that is used with trailers that has a functional combination of several working gears as well as a drop leg feature is disclosed. The mechanical jack has a gearbox having gears that not only have the capacity to handle a relatively heavy load, but ...
05/17/2005
6846016Trailer landing gear
A landing gear assembly for a semitrailer includes a pair of legs that may be simultaneously raised or lowered by turning a single crank. Each of the legs is configured to be able to be mounted in either an inboard or outboard configuration. This is achieved by prov...
01/25/2005
6764065Trailer jack assistance apparatus
An apparatus for assisting in the operation of a conventional trailer jack. The jack assistance apparatus is attached to a conventional trailer jack having telescoping tubes with a coarse adjustment and a fine adjustment. The apparatus includes a lever arm that enga...
07/20/2004
6684726Support device for articulated vehicle trailer
Landing gears of support devices for articulated vehicle trailers are frequently left in neutral position while the articulated vehicle is being driven. The vibrations which occur during driving can cause the landing gear to descend unintentionally, touch...
02/03/2004
6623035Landing gear
A landing gear leg adapted for mounting to a vehicle has an outer member, and a middle member telescoped slidably into the outer member. The middle member has a first end and a second end. The first end extends beyond the outer member. An inner member tel...
09/23/2003
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