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Class 414/673 - Return, buffer, or counterweight feature


Subclass of Class 414 - Material or article handling
Definition: Elevating devices comprising some means tending to return
No. of patents: 67
Last issue date: 03/11/2008


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NumberTitleIssue Date
7340972Apparatus and method for balancing and for providing a compliant range to a test head
A load, such as an electronic test head, is supported. A force sensor detects a force received from the load, the force resulting from the load being imbalanced such that a torque is created about a rotational axis of the load. A source of force provides a counter f...
03/11/2008
7044247Device at Ro-Ro vessel
The present invention relates to an arrangement for a Ro—Ro vessel, which exhibits a number of cargo-receiving spaces provided with a driving surface internally in the vessel, and with a ramp extending between one such space and a quay, along which ramp driverless...
05/16/2006
6971410Portable drum dosing system
A portable drum dosing system includes an outer mast assembly extending generally horizontally from the main frame and includes a pair of legs disposed at an angle with respect to each other so that the legs may straddle and dispose the main frame near a drum. An up...
12/06/2005
6968753Vibration-dampening base for ball-type lead screw of load port transfer system
A vibration-dampening base for a ball-type lead screw of a load port transfer system is disclosed. A load port transfer system includes a vertical arm drive motor assembly, a ball-type lead screw, and a vibration-dampening base connecting the vertical arm drive moto...
11/29/2005
6945745Industrial truck with a device for moving a lifting frame
An industrial truck has a chassis (1), a lifting frame (5), a load holding device (10) that can move vertically along the lifting frame (5), and at least one movement device to move the lifting frame (5) relative to the chassis (
09/20/2005
6925699Method of producing a quantity of integrated circuits
A method of producing a quantity of integrated circuits, that includes testing a set of semiconductor wafers that is made up of a first subset and a second subset. This first subset is configured in such a manner that a first tester is more readily adapted to perfor...
08/09/2005
6805527Fork lift truck
A fork lift truck is provided with a lifting frame, a rear weight and a driver's cab. The driver's cab forms a load-bearing component of the fork lift truck, whereby there are two bearings for the lifting frame at some vertical distance from each other, by which the...
10/19/2004
6736587Battery-electrically operated industrial truck, particularly counterweighted fork-lift truck
A battery-electrically operated industrial truck, particularly a counterweighted lifting truck, having a basic body with a front load-bearing axle and a rear steering axle, a lift frame mounted on the basic body for a load-carrying means adjustable in height on the ...
05/18/2004
6655898Front opening unified pod (FOUP) hoist jig
An apparatus and method for simultaneously cycle-testing two wafer storage containers is provided. The two wafer containers are maintained in a counterbalance relationship to each other and cycled in a vertical up-and-down motion to simulate the forces of...
12/02/2003
6616395Pallet lifting fork truck
Springing for support wheels of low lifting trucks arranged below the forks includes a common spring device arranged in the transfer mechanism of the lifting movement to the support wheels. The spring device includes a cylinder, a piston, a spring package...
09/09/2003
6543566Tractor-mounted forklift
A tractor-mounted forklift comprising a first frame having its rearward end secured to the underside of the tractor and having its forward end secured to the forward end of the tractor about a longitudinally extending pivot axis. A second frame is pivotal...
04/08/2003
6537017Cantilevered, self-adjusting pneumatic pallet positioner
A pallet positioner includes a support frame that consists of a main upright structure with a pair of spaced, parallel outriggers extending horizontally at ground level. The distal ends of the outriggers are connected by a flat, low-profile ramp. The upri...
03/25/2003
6533319Ballast attachment for tractor three-point hitch
A ballast attachment for a tractor three-point hitch includes a cubical, rotational molded polyethylene shell filled with steel reinforced concrete. The front side of the attachment includes a forwardly opening receptacle for receiving a transverse hitch ...
03/18/2003
6530740Hand truck with electrically operated lifting platform
This invention relates to a hand truck with an electrically operated lifting platform. The hand truck includes a frame on both sides of which two guide rails are formed. The frame is provided with a screw shaft vertically supported on the frame to be vert...
03/11/2003
6398480Fork lift truck
The invention relates to a fork-lift truck including a vehicle body which has rear wheels and a lift frame for load-carrying means, and including a wheel bearing means. For an increase in stability in standing of the fork-lift truck, a shifting or pivotin...
06/04/2002
6394738Automatic outrigger for a vehicle
An outrigger to prevent a moving vehicle from overturning includes an arm that normally stays in a retracted, stored position that allows the vehicle freedom to travel, but then automatically extends to brace the vehicle in response to tilting to a predet...
05/28/2002
6345677Industrial truck with a battery block
An industrial truck has a driving part, a load-receiving device, and at least one battery block located in the region of the driving part. At least one battery block can be removed from the driving part in the direction of one main driving direction of th...
02/12/2002
6241447Carriage for a construction panel
A carriage for the transport and installation of heavy doors and other construction panels includes a door-holding frame that is pivotally attached to a wheeled chassis. Independent drive mechanisms provide accurate control over the elevation, tilt, and r...
06/05/2001
6227553Attachment assembly for use on flat roofs
An attachment assembly provides a secure attachment point for the fall arrest tether lines of safety harnesses of workers on flat roofs, the assembly being movable over the roof as required. The assembly can be used alone, but usually is mounted on a whee...
05/08/2001
6209898Traction weights for light trucks and utility vehicles
A traction weight assembly, for mounting traction weights on a utility vehicle, has a weight bar that is inserted into a tubular receptacle. The tubular receptacle is secured to the vehicle frame. A retainer pin is inserted through a retainer pin passage ...
04/03/2001
6079935Forklift truck
A forklift truck has a frame, a cab including a roof to protect the driver and a lift support structure connected to the frame. A load-carrying fork is mounted on the lift support structure for vertical movement and the lift support structure, the roof an...
06/27/2000
6027303Non-counterweighted lift truck and method of operation
A lift truck, especially for lifting boats, includes a self-propelled main frame having a pair of parallel rails extending in a fore-and-aft direction. The main frame is supported by front drive wheels and rear castor wheels. A mast is movable forwardly a...
02/22/2000
5993136Mobil lift and storage apparatus
A mobile lift and storage apparatus for lifting, lowering, moving, and storing objects. A combination of the mobile lift and a stationary storage apparatus forming a stationary storage system for securing the mobile lift and the stored objects....
11/30/1999
5690360Supplementary weight for a vehicle
A supplementary weight for ballasting a vehicle can be adapted to be hooked onto a carrier component. The weight includes an entry opening which is bordered by an upper leg and a lower leg. The upper leg is supported on the carrier component which project...
11/25/1997
5618154Drum transporter
A drum transporter includes a main frame mounted on wheels with an outer mast assembly extending generally horizontally from the main frame. The outer mast assembly includes a pair of legs disposed at an angle of at least about 90° with respect to each o...
04/08/1997
5570990Human guided mobile loader stocker
A human guided mobile loader stocker developed to mechanically assist in SMIF container movement. The assist includes a pushcart, a semi-motorized transport arm, a processor, and communication devices. A group of containers are placed on the cart using th...
11/05/1996
5409346Self-loading and unloading forklift truck
The chassis of a forklift truck includes a front assembly and a rear assembly which, in certain embodiments, are movable toward and away from each other between an extended stable normal working condition and a contracted compact condition for storage or ...
04/25/1995
5395200Gantry crane apparatus for an array of racks storing cassettes containing rod-shaped material
A gantry crane for storing (or removing) long cassettes containing rod-shaped material on (or from) racks for supporting such cassettes at both rack ends travels on rails raised above the bottom of an array of such racks, but only part way up to the tops ...
03/07/1995
5374156Carriage assembly and side shift system for a lift truck
A carriage assembly, 20h for a lift truck upright assembly, 12, has pivotally mounted forks, 30, controlled by hydraulic cylinders, 36, that are operated by side shifter circuit, 110, having a single operator control, 124, for manipulating the forks in un...
12/20/1994
5312218Folding apparatus for positioning objects into structures
Apparatus for lifting objects into preformed openings in buildings. These openings can be recessed. The apparatus has a frame which has a head section and a tail section. The head section and tail section are rotably mounted to each other. A backstand is ...
05/17/1994
5224815Industrial truck with a monitoring apparatus for the loading state
An industrial truck designed, for example, as a counterweight fork lift truck has a lifting stand 2, which is pivotable around a tilting axis N situated crosswise to the vehicular longitudinal axis in the front area of the vehicle in a lifting stand suppo...
07/06/1993
5147170Power-driven adjustable equipment rack carrier
An apparatus and method for manipulating and transporting equipment such as electronic equipment racks is engageable with a rack in either its upright position or its horizontal position and is controllably positionable to rotate the engaged rack to a hor...
09/15/1992
5131802Vehicle equipped with balancing device
The invention relates to cargo-handling vehicles and the like which comprise a handling device such as a bucket or a fork. A balancing device in equipped either at the front or the rear of the vehicle in such a way as to be rotatable on an axle which is h...
07/21/1992
5059086Device for handling bottles
A bottle handling device comprising a tool for grasping the sides of the bottles, the tool being tiltably mounted to one end of a flexible cord and the other end of the cord is coupled to a balancing device for balancing the grasping tool and developing a...
10/22/1991
4963070Adjustable equipment rack carrier
An apparatus for manipulating and transporting equipment such as electronic equipment racks is engageable with a rack in either its upright position or its horizontal position and is controllably positionable to rotate the engaged rack to a horizontal pos...
10/16/1990
4957408Device for controlling a fork of a forklift
When the center of gravity of the load put on the two prongs of a forklift is located to the right or left of the central position, the prongs are tilted. The invention is intended to prevent the prongs from tilting in this situation. Tilt sensors are mou...
09/18/1990
4893074Electronic device testing system
An electronic device testing system of the type in which a test head is mounted for pivotal movement about three orthogonal axes. A cable is introduced to the test head along an axis peripendicular to the horizontal axis extending through the means by whi...
01/09/1990
4861217Vehicle restraint using both linear and pivotal movement
An improved vehicle restraint for preventing movement of a vehicle such as a truck away from a loading dock during a loading operation. The vehicle restraint includes a guide frame mounted on the front face of a loading dock and a vehicle restraining devi...
08/29/1989
4859133Fork lift truck and vehicle for the transport thereof
Fork lift truck comprising a chassis, a front and a rear axle supported by the chassis and having wheels at their outer ends, a portal which is pivotally connected to the front of the chassis, a fork, on which a load can be placed, being movable along sai...
08/22/1989
4850782Elevator, especially palletiser
Conveying apparatus, especially a palletiser, with a feed conveyor (10) for articles, especially packs (11; 30) of differing size and differing weight, on the one hand, and, on the other hand, with a stacker (14) assigned to a stacking point (12; 13) and ...
07/25/1989
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