# US 10,502,290 B2 · Drive member for hair trimmer

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- Number: US 10,502,290 B2
- Document ID: US10502290B2
- Status: Granted
- Kind: B2
- Application number: 15/012,678
- Filed: 2016-02-01
- Published: 2016-05-26
- Granted: 2019-12-10
- Earliest claimed: 2012-07-23
- Assignees: Andis Company
- Applicants: Andis Company
- Inventors: Steven J. Gilbert
- Web page: https://patentgrep.com/patent/US10502290B2

## CPC

- F16H 21/16: for interconverting rotary motion and reciprocating motion
- B26B 19/28: Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive (electric motors per se H02)
- F16H: GEARING
- B26B: HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR (for harvesting A01D; for horticulture, for forestry A01G; for butchering or meat treatment A22; for manufactering or repairing footwear A43D; nail clippers or cutters A45D29/02; kitchen equipment A47J; {vegetable slicers, julienne cutters and similar devices and holders therefor, B26D3/28}; for surgical purposes A61B; for metal B23D; cutting by abrasive fluid jets B24C5/02; plier-like tools with cutting edges B25B7/22; pincers B25C11/02; handles for hand implements, in general B25G; guillotine-type cutters B26D; {perforating by non-mechanical means, e.g. by fluid jet, B26F1/26}; for erasing B43L19/00; for textile materials D06H)

## Abstract

A drive for a hair trimmer include a transmission having a cam follower coupled to a drive lever by a bridge member, and a hinge having a mounting structure coupled to a first end of a plurality of webs, and a cross-bar coupled to a second end of the plurality of webs. A portion of the cross-bar encloses the bridge member to connect the transmission and the hinge.

## Claims

### Claim 1

A drive configured to connect a rotary drive to a hair cutting head assembly comprising:
a transmission having a bridge member disposed between a cam follower and a drive lever, wherein the bridge member defines a pair of apertures; and
a hinge having opposing side supports, a cross-bar, and a plurality of webs that connect the side supports to the cross-bar, wherein a portion of the cross-bar encapsulates a portion of the bridge member to fasten the transmission and the hinge, wherein the portion of the cross-bar is received by the apertures to encapsulate the portion of the bridge member.

### Claim 2 (depends on 1)

The drive of claim 1, wherein the bridge member connects the cam follower to the drive lever.

### Claim 3 (depends on 1)

The drive of claim 1, wherein the pair of apertures are disposed on opposing sides of the bridge member.

### Claim 4 (depends on 3)

The drive of claim 3, wherein the portion of the cross-bar is received by the apertures to encapsulate the bridge member.

### Claim 5 (depends on 1)

The drive of claim 1, wherein the hinge is made of a first material and the transmission is made of a second material.

### Claim 6 (depends on 5)

The drive of claim 5, wherein the first material is different than the second material.

### Claim 7 (depends on 6)

The drive of claim 6, wherein the second material has a stiffness that is greater than the first material.