# US 6,294,782 B1 · Corona charger with a serpentine strung corona wire

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- Number: US 6,294,782 B1
- Document ID: US6294782B1
- Status: Granted
- Kind: B1
- Application number: 09/277,430
- Filed: 1999-03-26
- Granted: 2001-09-25
- Earliest claimed: 1999-03-26
- Assignees: NexPress Solutions LLC
- Inventors: Andreas Dickhoff
- Web page: https://patentgrep.com/patent/US6294782B1

## CPC

- H01T 19/00: Devices providing for corona discharge (for charging electrographic elements G03G15/02)
- G03G 15/0291: {corona discharge devices, e.g. wires, pointed electrodes, means for cleaning the corona discharge device}
- H01T: SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES (overvoltage protection circuits H02H)
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

An apparatus for a corona wire housing comprising a continuous piece of corona wire mounted in a serpentine fashion around multiple pulleys with a single tension spring tensioning the continuous piece of corona wire and fixed terminals supporting the ends of the wire.

## Claims

### Claim 1

An apparatus comprising:
(i) a continuous piece of corona wire forming a serpentine path;
(ii) a single tension spring tensioning said continuous piece of corona wire;
(iii) a first fixed terminal securing one end of said wire;
(iv) a plurality of rotating mounts around which said wire is mounted so as to form and support a plurality of corresponding wire pairs comprising each of said wire pairs comprising two strings of said wire such that tension on said wire in said corresponding pairs is substantially equal; and
(v) a second fixed terminal securing another end of said wire.

### Claim 2 (depends on 1)

An apparatus according to claim 1, wherein said pairs each forms two strings that are parallel to one another.

### Claim 3 (depends on 1)

An apparatus according to claim 1, wherein said mount includes at least one roller attached to said spring.

### Claim 4 (depends on 1)

An apparatus according to claim 1, further including a plurality of rollers around which said wire is mounted forming corresponding pairs of strings.

### Claim 5 (depends on 4)

An apparatus according to claim 4, further comprising a linearly movable sled, wherein said tension spring is attached to said sled.

### Claim 6 (depends on 4)

An apparatus according to claim 4, wherein said continuous piece of wire forms four corona wire strings.

### Claim 7 (depends on 1)

An apparatus according to claim 1, wherein said continuous piece of wire forms four corona wire strings.

### Claim 8

An apparatus comprising:
(i) a continuous piece of corona wire forming a serpentine path;
(ii) a single tension spring tensioning said continuous piece of corona wire;
(iii) a first fixed terminal securing one end of said wire;
(iv) a plurality of rotating mounts which said wire passes around so as to form and support corresponding pairs of two strings of said wire such that tension on said wire within said pair of two strings is substantially equal;
(v) a second fixed terminal securing another end of said wire; and
(vi) an adjustable sled operatively connected to said wire and to said single tension spring to provided for tensioning adjustment.

### Claim 9 (depends on 8)

An apparatus according to claim 8, wherein said corresponding pairs each form at least two strings that are parallel to one another.

### Claim 10 (depends on 8)

An apparatus according to claim 8, wherein said rotating mounts comprise rollers.

### Claim 11 (depends on 8)

An apparatus according to claim 8, further comprising said wire traversing a path from said first fixed terminal around a first rotating mount to a second rotating mount containing said sled and around a third rotating mount to said second fixed terminal such that a series of four parallel wires of essentially equal tension is created.

### Claim 12 (depends on 11)

An apparatus according to claim 11, further comprising said sled is a linearly movable sled.

### Claim 13 (depends on 11)

An apparatus according to claim 11, wherein said continuous piece of wire has only said sled to perform adjustments on tension to said continuous piece of wire.

### Claim 14 (depends on 8)

An apparatus according to claim 8, wherein tension control to said continuous piece of wire consists of said single tension spring is on said sled.