# US 9,943,146 B2 · Compression molded silicone ring

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- Number: US 9,943,146 B2
- Document ID: US9943146B2
- Status: Granted
- Kind: B2
- Application number: 14/798,871
- Filed: 2015-07-14
- Published: 2016-12-01
- Granted: 2018-04-17
- Earliest claimed: 2015-05-27
- Assignees: Qalo LLC
- Applicants: Qalo LLC
- Inventors: Patrick Baker; Kyle Holiday
- Web page: https://patentgrep.com/patent/US9943146B2

## CPC

- A44C 27/001: {Materials for manufacturing jewellery}
- B29C 43/027: {having an axis of symmetry (B29C43/102 takes precedence)}
- B29C 43/146: {for making multilayered articles}
- B29C 43/203: {Making multilayered articles}
- A44C 9/0023: {in a separable way}
- B29C 43/145: {for making multicoloured articles}
- B29C 2043/148: {using different moulds}
- B29K 2083/00: Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
- B29K 2083/005: {LSR, i.e. liquid silicone rubbers, or derivatives thereof}
- B29L 2031/743: {Jewellery}
- A44C: PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

A method of manufacturing a silicone ring consisting of two outer-band halves formed by compression silicone-molding in a first mold and an inner-band formed by placing half of the outer-bands of the ring in a second mold, placing a spacer-insert mold over the second mold, inserting a silicone rubber in the cavities of a spacer-insert mold, inserting the remaining outer-band halves into a fourth mold, inserting the three molds into a compression chamber to vulcanize the outer-band halves and the inner-band together, wherein the first and second outer-bands form a complete ring, and a symmetrical inner-band is formed in between the first and second outer-band halves.

## Claims

### Claim 1

A method of manufacturing a silicone ring via compression molding comprising:
forming a first outer-band half of a silicone ring and a second outer-band half of a silicone ring with a first compression mold containing a base plate and a top plate press;
placing the first outer-band half of the silicone ring in a second compression mold;
placing a spacer-insert mold over the second compression mold;
placing a silicone rubber through a cavity in the spacer-insert mold and onto a cavity platform on the second mold;
placing the second outer-band half of the rings in a third mold;
placing the third mold over the spacer-insert mold;
inserting the second mold, the spacer-insert mold, and the fourth mold into a compression chamber, wherein the silicone rubber is compression molded and vulcanized to form an inner-band, and the first and second outer-band halves form a complete silicone ring, and a symmetrical inner-band is formed in between the first and second outer-band halves.

### Claim 2 (depends on 1)

The method of claim 1, wherein the pressure used in the molding process to form the inner band is about 120 kg/cm2.

### Claim 3 (depends on 1)

The method of claim 1, wherein the pressure used in the molding process to form the outer-band half is about 200 kg/cm2.

### Claim 4 (depends on 1)

The method of claim 1, wherein the molds are heated to at least 200 degrees Celsius.

### Claim 5 (depends on 1)

The method of claim 1, wherein the molds are compressed for at least three minutes.

### Claim 6 (depends on 1)

The method of claim 1, wherein the first and second outer-band halves are composed of a food grade silicone rubber.

### Claim 7 (depends on 1)

The method of claim 1, wherein the symmetrical inner-band is composed of a food grade silicone rubber.

### Claim 8 (depends on 7)

The method of claim 7, wherein the silicone rubber of the inner band is a different color than the silicone rubber of the first and second outer-band halves.

### Claim 9 (depends on 1)

The method of claim 1, wherein at least 1.0 grams of silicone rubber are used to form the first outer-band half and at least 1.0 grams of silicone rubber are used to form the second outer-band half.

### Claim 10 (depends on 1)

The method of claim 1, wherein at least 2.0 grams of silicone rubber are inserted through each cavity of the spacer-insert mold to form the inner-band half.

### Claim 11 (depends on 1)

The method of claim 1, wherein an excess silicone is removed from the complete ring.