# US 9,751,225 B2 · Electric stubble trimmer

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- Number: US 9,751,225 B2
- Document ID: US9751225B2
- Status: Granted
- Kind: B2
- Application number: 14/493,793
- Filed: 2014-09-23
- Published: 2016-03-24
- Granted: 2017-09-05
- Earliest claimed: 2014-09-23
- Assignees: Raymond Industrial Ltd.
- Applicants: Raymond Industrial Ltd.
- Inventors: John Ying Man Wong; Anthony Kowk Yung Law
- Web page: https://patentgrep.com/patent/US9751225B2

## CPC

- B26B 19/06: involving co-operating cutting elements both of which have shearing teeth
- B26B 19/3846: {Blades; Cutters (B26B19/044, B26B19/141 take precedence)}
- 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

An outer cutter for an electric trimmer may include a frame having first and second end sections. A plurality of outer cutter ribs may be disposed between the first and second end sections. Each outer cutter rib of the plurality of outer cutter ribs may include a cutting surface and an outer surface. The outer surface may include a glide surface disposed between first and second sides of the outer cutter surface. The plurality of outer cutter ribs may have a stubble trimmer value of at least 3.

## Claims

### Claim 1

An outer cutter for an electric trimmer, the outer cutter comprising:
a frame having first and second end sections; and
a plurality of outer cutter ribs disposed between the first and second end sections, each outer cutter rib of the plurality of outer cutter ribs including a cutting surface and an outer surface, the outer surface including a glide surface disposed between first and second sides of the outer surface, the cutting surface facing a longitudinal passage of the outer cutter, wherein the plurality of outer cutter ribs has a stubble trimmer value of at least 3.

### Claim 2 (depends on 1)

The outer cutter of claim 1, wherein the cutting surface includes at least a first cutting edge.

### Claim 3 (depends on 1)

The outer cutter of claim 1, wherein the glide surface is parallel to the cutting surface.

### Claim 4 (depends on 1)

The outer cutter of claim 1, wherein the first side transitions into the glide surface arcuately, the second side includes a notch that transitions into the glide surface, the glide surface inclines from the first side to the notch, wherein adjacent outer cutter ribs of the plurality of outer cutter ribs are alternately orientated so that the first and second sides of one outer cutter rib is proximate the second and first sides of its adjacent outer cutter rib, respectively.

### Claim 5 (depends on 1)

The outer cutter of claim 1, wherein the first side transition into the glide surface arcuately, the second side transitions into the glide surface arcuately, the glide surface inclines from the first side to the second side.

### Claim 6 (depends on 5)

The outer cutter of claim 5, wherein adjacent outer cutter ribs of the plurality of outer cutter ribs are alternately orientated so that the first and second sides of one outer cutter rib is proximate the second and first sides of its adjacent outer cutter rib, respectively.

### Claim 7 (depends on 1)

The outer cutter of claim 1, wherein the first side includes a first chamfer coupled to the glide surface, the second side includes a second chamfer coupled to the glide surface, the glide surface curves inwardly toward the cutting surface.