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

Icon_funbox Quotables

"I hate what they've done to my child...I would never let my own children watch it. "

Vladimir Zworykin, television pioneer ; Talking about an invention in which he played a critical role.

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 242/420.5 - Electrical control circuit


Subclass of Class 242 - Winding, tensioning, or guiding
Definition: Subject matter wherein the supply coil is rotated by a prime
No. of patents: 33
Last issue date: 10/09/2007


NumberTitleIssue Date
7278601Speed-adjustable life-saving apparatus
Provided is speed-adjustable life-saving apparatus which comprises a housing, a drum disposed in the housing, a life rope and a resistance wheel hub motor. One end of the life rope is fastened and wound on the drum. The resistance wheel hub motor disposed in the dru...
10/09/2007
6918559Method of slitting a battery separator-use resin film object and such a battery separator-use resin film object
To provide a slitting method of a battery separator-use resin film object that is less susceptible to occurrences of holes and tearing at the time of a slitting process. A slitting device, which is provided with a feeding roll 51 for feeding a film that is wound up ...
07/19/2005
6886772Web splicing method and web splicing apparatus
The present invention provides a web splicing method and a web splicing apparatus with which a line velocity on an output side of the splicing apparatus does not fluctuate through a web splicing operation. The method and apparatus are further operable to maintain a ...
05/03/2005
6820833Method for controlling a yarn processing system and a yarn processing system
The invention relates to a method for controlling a yarn processing system comprising a textile machine, a yarn feed device and a supply spool. According to the inventive method, the yarn feed device pulls the yarn from the supply spool with varying speed and forms ...
11/23/2004
6533207Method and arrangement for producing a roll from printed products
A method for producing a roll from printed products in a winding operation includes winding the printed products with winding tape onto a winding core; driving a winding rug with a first drive, wherein the winding rug is arranged on the underside of the w...
03/18/2003
6268005Sheeter wire apparatus
An improved sheeter wire device providing constant tension on a feeder spool even during wire breakage. A constant speed motor draws wire across the face of the sheeter while a drag motor maintains constant tension on the wire. A pair of pinch rollers pro...
07/31/2001
5853253Printer and method adapted to precisely position a dye receiver portion
A printer and method adapted to precisely position a dye receiver portion. The printer and method properly positions the dye receiver portion for printing successive images onto the dye receiver portion with precise color registration and constant length,...
12/29/1998
5575435High speed apparatus for forming foam cushions for packaging purposes
A sealing and severing apparatus is disclosed for sealing plastic bags formed in succession from stock plastic film material and then severing the sealed bags from one another. The bags are filled with a foamable composition while they are being formed so...
11/19/1996
5517812Automatic control of armour tape tension
A method and system are provided for automatically controlling tension of an armour tape being wrapped around a continuous strand of material, such as an electrical cable, travelling through an armouring machine having a reel of tape and tape feed rolls r...
05/21/1996
5502358Method and apparatus for controlling the tension of a power cord of a self-propelled robot
A self-propelled robot includes an electrical cord mounted on a spool for being drawn-in or drawn-out. A sensor senses a rate at which the cord is drawn in or drawn out and actuates a motor connected to the spool for applying a rotary force to the spool t...
03/26/1996
5498940Methods and apparatus for maintaining a constant tension on an electrical cord of a robot
A constant tension is maintained on cord of a robot by determining whether the cord is being extracted or retracted and the extent of such extraction or retraction, and increasing or decreasing a spring force applied to the cord by an amount suitable for ...
03/12/1996
5461881Arrangement for driving a warp beam
An arrangement for driving a warp beam employs a stepless adjustable drive (7) whose coupling element (8) is displaced by a setting member (11). The setting member (11) is controlled-by a computer (10) which provides an input arrangement (17) for the take...
10/31/1995
5259563Magnetic recording/reproducing apparatus without capstan
A magnetic recording/reproducing apparatus includes a guide roller which rotates as magnetic tape runs, and the running speed of the tape is detected on the basis of the rotation of the guide roller. The magnetic recording/reproducing apparatus further ca...
11/09/1993
5160098Tension control system and method
A tension control system for maintaining a substantially constant predetermined tension on material being unwound from or wound onto a roll of material. The control system includes a shaft for holding the roll of material and a motor coupled to the shaft ...
11/03/1992
5035372Winding device for a yarn, in particular for a yarn with approximately zero elongation
A winding device for a yarn (1), in particular for winding a inelastic yarn (1) about a foundation (2). The device, optionally, includes a yarn guide unit (4) upstream from foundation (2). A rotary drive (5) for the foundation (2) and an unwinding device ...
07/30/1991
4995563Apparatus for winding up and unwinding printed products infed and outfed in an imbricated formation by means of a conveyor
One end of a winding band is secured to a winding core. The winding band travels from a supply spool over a deflection roll rotating at a circumferential velocity corresponding to the conveying velocity of the product conveyor delivering the printed produ...
02/26/1991
4789813Apparatus for tension control of a flexible material during winding or unwinding from a drum or reel
Apparatus for controlling the tension of travelling filamentary material such as that being unwound from a drum or spool. It comprises a three phase induction motor for turning the drum or spool modified to have a high resistance rotor providing a torque ...
12/06/1988
4722490Method and apparatus for winding rolls of paper
An apparatus and method wherein, with continuous measurement of the stretch directly on the web itself and by controlling the unwinding and winding-up speed in the winding-up roll, a predetermined stretch profile in relation to winding diameter is produce...
02/02/1988
4697408Apparatus for controlling amount of delivery in wrapping material feed system
An apparatus for controlling the amount of delivery in a wrapping material feed system, including a rotation drive means for rotating a bobbin with a wrapping material wound thereon; a winding diameter detecting means for detecting a winding diameter of t...
10/06/1987
4687151Textile yarn pull-off system
An apparatus intended particularly for pulling filamentary spooled material, such as yarn, from a spool has a spool holder, receiving the spool, and a flyer arm, preferably rotatably supported about the axis of the spool. The flyer arm carries yarn guide ...
08/18/1987
4569489Cable tension control device
A cable tension control device for an electrically powered mine vehicle is disclosed. The vehicle is of the type having an electric trailing cable wound on a cable reel mounted on the vehicle. The cable reel has a motor for rotating the reel in the direct...
02/11/1986
4519039Digital coil diameter function generator and reel motor drive system embodying the same
A programmable controller including coil diameter calculator and strip speed derivation and inertia compensation is associated with a reel system for the generation in normalized digital form of the coil diameter of the reel instantaneously to allow initi...
05/21/1985
4513229Reel servo for tape transport
A supply reel servo for a tape transport in which a motor-driven capstan of low inertia draws tape past a cylindrical scanning drum includes a tension servo arm which provides a signal denoting tape tension in a loop adjacent the supply reel. This signal ...
04/23/1985
4448366Coil diameter tracking system and tension regulation system using such tracking system
A reel-tension motor drive system embodies circuitry for the instantaneous calculation of the coil diameter of one reel from the instantaneously derived coil diameter of the other reel, thereby requiring the use of only one step velocity signal, the latte...
05/15/1984
4387861Machine for separating double-rolled aluminum sheet
Machine for separating double-rolled thin aluminum sheet and for winding the separated sheets onto winding shafts, the coil-carrying supply shaft being driven by a motor-generator controlled by a speed control circuit for a constant sheet speed, following...
06/14/1983
4363457Web tensioning system
A system is described for holding the tension of a web substantially constant as the web is transported from a supply spool to a take-up spool. The rotation of each spool is controlled by a motor. A tension control circuit senses the currents in both moto...
12/14/1982
4332359Tensioning means for reel-to-reel tape transports
A reel-to-reel tape drive system is disclosed in which primary control signals are applied to motors to drive both the payout and takeup reels and in which secondary control signals are provided to first and second torque driving circuits which, responsiv...
06/01/1982
4289284Tape control apparatus
Apparatus controls the torque applied by a motor to a reel, such as the supply reel of a video tape recorder, so that the tape drawn from such supply reel by a tape transport system is transported with a substantially constant tape tension. The apparatus ...
09/15/1981
4256996Web transport system
A capstanless magnetic tape transport system employs supply and take-up motors, the supply motor being employed as a drag motor. The supply motor is controlled to meter tape at a predetermined speed, and the take-up motor is of such design that, in respon...
03/17/1981
4238082Method and apparatus for slitting and rewinding web materials
In the disclosed apparatus, a web of material is fed from a supply roll, around a plurality of idler rollers, and past a series of blades which slit the web into a plurality of strips. Adjacent strips are rewound about corresponding product cores on diffe...
12/09/1980
4093143Stock winding apparatus
An apparatus for winding stock in coil fashion. The apparatus includes a base, a variable speed motor, a speed selection control unit, a coil guide, and clutch means. The variable speed motor is mounted on the base and operatively joined through a first g...
06/06/1978
4000804Arrangement for transferring a ribbon from a feed spool to a take-up spool
An arrangement for transferring a ribbon from a feed spool to a take-up spool comprises a pair of electric motors each one connected to a corresponding spool for the rotation thereof. The motor connected to the take-up spool is supplied by a constant curr...
01/04/1977
3967789Tape winding system
In a tape winding system having supply means driven by supply driving means, and takeup means driven by takeup driving means, a method for winding a quantity of tape from the supply means to the takeup means is disclosed. The method comprises the steps of...
07/06/1976
 
Sign InRegister
Username  
Password   
forgot password?