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Patent No. 6368227

Method of swinging on a swing

A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.

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Class 73/469 - By radially and circumferentially adjustable weights


Subclass of Class 73 - Measuring and testing
Definition: Subject matter including a test counterbalance weight of
No. of patents: 18
Last issue date: 10/02/2007


NumberTitleIssue Date
7275302Method of forming a disc pack
A method of forming a disc pack for use in a disc drive is provided. The method includes forming at least one alignment feature between an inner diameter and an outer diameter of each of a plurality of discs. The at least one alignment feature of a first disc of the...
10/02/2007
7004840Internal balance correction device for vehicular driveshaft assembly
A balance correction device is supported within a hollow article, such as a driveshaft assembly for a vehicular drive train system, to balance the article for rotation. The balance correction device includes a first disc having a first slot provided therein and a se...
02/28/2006
6971154Hard disk balancing apparatus and method for hard disk drive
A hard disk balancing apparatus for a hard disk drive including an eccentricity detection unit to detect an eccentricity amount and an eccentricity position of the hard disk with respect to a rotation axis of a spindle motor for rotating the hard disk as an origin, ...
12/06/2005
6947253Method for balancing a rotating assembly using eccentric rings
A method for balancing a spindle assembly for compensating for dynamic imbalance of the spindle assembly. The method uses a plurality of adjustable eccentric rings for dynamically balancing the spindle assembly. The plurality of eccentric rings are preassembled with...
09/20/2005
6840105Method and apparatus for balancing a vehicle driveshaft
The present invention provides a method and apparatus for balancing vehicle driveshafts. One embodiment of a method according to the present invention comprises analyzing a driveshaft and determining a balancing vector to counter any imbalance in the driveshaft. A d...
01/11/2005
6698286Method of balancing a disk pack using spindle motor imbalance and disk drive including a balanced disk pack
A method of balancing a disk pack for use in a disk drive according to an aspect of the present invention. The disk pack includes a spindle motor and a rotatable disk. The spindle motor is configured to rotate the disk about an axis of rotation of the spi...
03/02/2004
6676317Rotor balancing structure, sheet material processing device, and image forming device
The drum has a balancer disposed at both ends of a drum body around which a printing plate is wound, and with a rotating shaft rotatably supported by a supporting plate via an elastic support member of a shaft receiving member. When the rotating drum is r...
01/13/2004
6210099Moving-weight, dynamic balancing apparatus for a rotary machine, in particular for industrial fans
A moving-weight, dynamic balancing apparatus for a rotary machine, in particular an industrial fan, having a rotary shaft, and at least one rotor carried by the rotary shaft and provided with main rotor bearings to allow rotary movement thereof. The balan...
04/03/2001
5824898Rotating mass balancing system
A system for balancing devices having motors and rotating masses to be coupled to the motors utilizes a momentum transfer mechanism to shift the rotating mass based on sensed imbalance. In this manner the mass is shifted to a position which accounts for t...
10/20/1998
5467653Apparatus for unbalance compensation of a grinding wheel
An apparatus for unbalanced compensation of a grinding wheel which is rotatable about an axis of rotation, with compensating weights which are guided rotatably about the axis of rotation of the grinding wheel with symmetrical mass distribution relative to...
11/21/1995
5463900Balancing process and balanced component after this process
For balancing a rotating component, in particular a component arranged in the drive train of a motor vehicle such as a flywheel, for example, it is proposed that an incomplete mass ring is attached to the component, in which the gap is dimensioned so that...
11/07/1995
5263309Method of and apparatus for balancing the load of a cabling apparatus
A method of and an apparatus for balancing a multi-bay cabler system when less than all of the cabler frame bays are supplied with a supply bobbin are disclosed. The apparatus comprises a mechanical counterweight system which compensates for a depleting s...
11/23/1993
5245917Skewer assembly incorporating a counterbalancing device
A skewer assembly (12) that incorporates a counterbalancing device (42) for use with a barbecue grill (10) or other rotisserie assembly includes a generally rectangular shaft (20) that has a handle (22) releasably secured to one end thereof through a rele...
09/21/1993
5099430Method and apparatus for continuously suppressing unwanted rotational phenomena in a rotating body
For a body rotating on an axis and having a moment of inertia relative to the axis, an apparatus for dynamically suppressing unwanted rotational phenomena occurring relative to the axis of rotation, i.e., phenomena which exhibit themselves in a body only ...
03/24/1992
4780593Balance correcting apparatus for a rotating body
The unbalance in rotating equilibrium of a rotating body is corrected by carrying out a padding welding on the rotating body. The correction of the unbalance is carried out, first, by determining a position and an amount to be padded on the rotating body on th...
10/25/1988
4716761Method and jig for dynamically balancing an assembly of the jig and rotor
A method of dynamically balancing an assembly of a metal jig and a ceramic rotor attached thereto, the ceramic rotor having a shaft portion, and the metal jig having at its one axial end a fixing hole, comprising the steps of: inserting the shaft portion ...
01/05/1988
4476777Counterbalance device for rotatable shaft
A counterbalance device for a rotary shaft comprises a sleeve member in the form of a short tubing or a handle which can be mounted on the rotary shaft. The sleeve member has an extension rear portion adapted to receive a bushing member to be mounted ther...
10/16/1984
4295032Process for balancing a crankshaft
A process for balancing a crankshaft having pin portions and associated balancing weight parts which counterbalance the pin parts comprising welding masses to the balancing weight parts to compensate for unbalance of the crankshaft. The welding takes plac...
10/13/1981
 
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