U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "

Mark Twain ; Christmas greetings, 1890

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 172/444 - Hitch quadrilateral modified during lift


Subclass of Class 172 - Earth working
Definition: Apparatus in which the geometrical outline (as seen in elevation),
No. of patents: 14
Last issue date: 01/22/2008


NumberTitleIssue Date
7320202Stacking of lumber pieces
An apparatus for picking, conveying, stacking and bundling lumber pieces from the ground for example for removing stacked support lumber during laying of a pipe line comprises a tracked vehicle to which is attached a frame carrying a transport conveyer along the sid...
01/22/2008
7188680Hydraulically adjustable hinged hitch
An agricultural implement includes a pivoting assembly, a working assembly, and a tow bar assembly. The working assembly includes a front gang of coulters and a rear gang of coulters. The pivoting assembly includes a hydraulic cylinder. The hydraulic cylinder is adj...
03/13/2007
7073603Device for coupling two units to each other
A device for coupling two units to each other with at least five connecting elements (18,20,22,24,26) whereby the respective first end thereof can be hingeably connected to respectively one connection point (30,32,34,36,38) of one unit and whose other ...
07/11/2006
7021396Suspension system for a three-point apparatus
A three-point apparatus is disclosed comprising a hitch system, an implement, and a suspension system. The hitch system is comprised of a base and a three-point interface. The base of hitch system is coupled to the three-point interface of the hitch system. The thre...
04/04/2006
7011328Transversely extending pivotal hitch mechanism
Apparatus and method for applying temporary raised pavement markers (TRPM) to roadway surfaces comprises a conveyor upon a wheeled vehicle wherein an upstream end portion of the conveyor is able to extend, for example, over the rear bed portion of a roadwork vehicle...
03/14/2006
6789746Connecting device connecting a spray boom to a chassis of an agricultural sprayer and sprayer equipped with such a connecting device
A connecting device connecting a spray boom to a chassis of an agricultural sprayer, said connecting device is noteworthy in that it consists of a single quadrilateral arranged in a plane which is substantially vertical and substantially parallel to a longitudinal p...
09/14/2004
6464016Hitch system
A hitch system attachable between a towing utility vehicle and a towed device, where the utility vehicle has a power source. The hitch system has a first frame adapted to pivotably couple the towing vehicle and the towed device, a lift frame attachable to...
10/15/2002
6343661Suspension system for a work vehicle
A suspension system supports an implement on a work vehicle and includes a linkage mechanism providing pivotal connection between the work vehicle and the implement and adapted to pivot in such manner as to permit relative upward and downward movement bet...
02/05/2002
6321851Hitch mechanism for coupling implements to a vehicle
A hitch mechanism for coupling an implement to a utility vehicle includes a coupling frame and six variable length links. The frame has couplers for coupling to the implement. Each link has a first end coupled to the vehicle and a second end coupled to th...
11/27/2001
4909331Hitch gear having a load transfer system
The hitch gear comprises a three point lift system. It comprises a system (10) for load transfer by means of a hydraulic cylinder (11) at the third point and at least adjustment wheel (13) provided with a load sensor (19) suitable to act with control mean...
03/20/1990
4336663Earth scraper assembly
A hoisting mechanism for earth scraping equipment adapted for towing behind a vehicle, such mechanism including a plurality of pivotally connected links designed to pivot the scraper bed about rear wheels in a manner that provides for change in elevation ...
06/29/1982
4191280Mechanical link members
A mechanical link member is provided which is easily variable in length for ease of connection yet rigid in operation by the use of hydraulic valve and screw-type adjustments. In addition to an interrupted flow position which prevents relative axial movem...
03/04/1980
4059283Three-point tractor linkage
A three-point linkage for coupling farm implements to a tractor has two lower links pivoted at their forward ends to a tractor and lie in a plane which from the rear to the front ends of the links is downwardly inclined and the links converge towards a po...
11/22/1977
4039201Tractor implement lift height amplifier
A tractor implement lift height amplifier including a lift arm mounted on a rock shaft on a tractor and having links connected to the arm and with the links connected with the draft arms attached between the tractor and a draft implement. The lift arm and...
08/02/1977
 
Sign InRegister
Username  
Password   
forgot password?