# US 10,245,120 B2 · Method of manufacture of a dental prophy angle

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- Number: US 10,245,120 B2
- Document ID: US10245120B2
- Status: Granted
- Kind: B2
- Application number: 15/433,897
- Filed: 2017-02-15
- Published: 2018-08-16
- Granted: 2019-04-02
- Earliest claimed: 2017-02-15
- Assignees: Young Innovations, Inc.
- Applicants: Young Innovations, Inc.
- Inventors: Brian Prange
- Web page: https://patentgrep.com/patent/US10245120B2

## CPC

- A61C 1/16: Protecting caps for hand-pieces or angle-pieces
- A61C 1/12: Angle hand-pieces
- A61C 17/005: {Devices for dental prophylaxis}
- B29C 65/08: using ultrasonic vibrations {(non-plastics element to plastics elements B29C65/645)}
- B29C 65/48: using adhesives {, i.e. using supplementary joining material; solvent bonding}
- B29C 66/1122: {Single lap to lap joints, i.e. overlap joints (B29C66/45, B29C66/472, B29C66/52272 take precedence)}
- B29C 66/532: {Joining single elements to the wall of tubular articles, hollow articles or bars}
- B29C 66/71: {characterised by the composition of the plastics material of the parts to be joined (welding bar compositions B29C65/125)}
- B29C 66/712: {the composition of one of the parts to be joined being different from the composition of the other part}
- B29C 66/73152: {of different hardness, i.e. the hardness of one of the parts to be joined being different from the hardness of the other part}
- B29C 66/73921: {characterised by the materials of both parts being thermoplastics}
- B29L 2031/753: {Medical equipment; Accessories therefor (bloodbags, medical bags B29L2031/7148; artificial eyes B29L2011/0008)}
- A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00)
- 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)
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

A method of manufacturing a dental prophy angle with a wiper assembly is described. The prophy angle comprises a neck section and the neck section has an outer surface. The method comprises the steps of manufacturing a dental prophy angle, manufacturing a wiper assembly by molding a base, the base having an undersurface, the undersurface configured to match the outer surface of the neck section, molding a shield, the shield assembly comprising a carriage and a wiper, attaching the base to the shield assembly, and attaching the undersurface to the outer surface.

## Claims

### Claim 1

A method of manufacturing a dental prophy angle having a wiper assembly, the method comprising the steps of:
manufacturing the dental prophy angle, the dental prophy angle comprising a neck section, the neck section having an outer surface;
manufacturing a wiper assembly by:
molding a base, the base having an undersurface, the undersurface configured to match the outer surface of the neck section;
over-molding a shield assembly onto the base, the shield assembly comprising a carriage and a wiper;
attaching the undersurface to the outer surface.

### Claim 2 (depends on 1)

The method of claim 1, wherein the attaching step comprises at least one of gluing and ultrasonic welding.

### Claim 3 (depends on 1)

The method of claim 1, wherein the neck section comprises a first material and the base comprises a second material, the first material and the second material having a similar hardness.

### Claim 4 (depends on 3)

The method of claim 3, wherein the first material and the second material have a hardness of 60 to 90 Shore D.

### Claim 5 (depends on 3)

The method of claim 3, wherein the shield assembly comprises a third material, the third material being more flexible than the first material and the second material.

### Claim 6 (depends on 5)

The method of claim 5, wherein the third material has a hardness of 35 to 65 Shore A.

### Claim 7 (depends on 4)

The method of claim 4, wherein the shield assembly comprises a third material, the third material having a hardness of 35 to 65 Shore A.

### Claim 8

A method of manufacturing a dental prophy angle having a wiper assembly, the method comprising the steps of:
manufacturing the dental prophy angle, the dental handpiece comprising a neck section, the neck section having an outer surface;
manufacturing a wiper assembly by:
molding a base, the base having an undersurface, the undersurface configured to match the outer surface of the neck section;
molding a shield assembly, the shield assembly comprising a carriage and a wiper;
attaching the base to the shield assembly; and
attaching the undersurface to the outer surface.

### Claim 9 (depends on 8)

The method of claim 8, wherein the attaching-the-undersurface step comprises at least one of gluing and ultrasonic welding.

### Claim 10 (depends on 8)

The method of claim 8, wherein the neck section comprises a first material and the base comprises a second material, the first material and the second material having a similar hardness.

### Claim 11 (depends on 10)

The method of claim 10, wherein the first material and the second material have a hardness of 60 to 90 Shore D.

### Claim 12 (depends on 10)

The method of claim 10, wherein the wiper comprises a third material, the third material being more flexible than the first material and the second material.

### Claim 13 (depends on 12)

The method of claim 12, wherein the third material has a hardness of 35 to 65 Shore A.

### Claim 14 (depends on 11)

The method of claim 11, wherein the wiper comprises a third material, the third material having a hardness of 35 to 65 Shore A.