# US 10,500,746 B2 · Reciprocating razor with living hinge interconnections

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,500,746 B2
- Document ID: US10500746B2
- Status: Granted
- Kind: B2
- Application number: 15/972,765
- Filed: 2018-05-07
- Published: 2019-11-07
- Granted: 2019-12-10
- Earliest claimed: 2018-05-07
- Applicants: Leon Coresh
- Inventors: Leon Coresh
- Web page: https://patentgrep.com/patent/US10500746B2

## CPC

- B26B 21/38: with provision for reciprocating the blade by means other than rollers (reciprocating the cutting elements of clippers or dry shavers B26B19/00)
- B26B 21/227: {with blades being resiliently mounted in the changeable unit}
- B26B 21/4012: {Housing details, e.g. for cartridges}
- B26B 21/405: {Electric features; Charging; Computing devices}
- B26B 21/4068: {Mounting devices; Manufacture of razors or cartridges (B26B21/528 takes precedence)}
- B26B 21/443: {Lubricating strips attached to the razor head}
- 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 shaving razor having independent blade assemblies coupled to linkages with flexible regions between the blade assemblies. The linkages permitting reciprocating motion of the blade assemblies where adjacent assemblies reciprocate in opposite directions. Other embodiments are also described and claimed.

## Claims

### Claim 1

A shaving razor comprising:
a first independent blade assembly and a second independent blade assembly, each blade assembly having at least one blade;
a first and second linkage coupling together the first and second independent blade assemblies, the linkages each having a living hinge disposed between the first and second blade assemblies;
a bridge spanning between and coupled to the first and second linkage, the bridge configured to move laterally, wherein lateral movement of the bridge in a first direction causes the first blade assembly to move in the first direction and the second blade assembly to move in an opposite direction of the first direction, via the living hinges.

### Claim 2 (depends on 1)

The shaving razor of claim 1 wherein the bridge is integrally molded with the linkages.

### Claim 3 (depends on 1)

The shaving razor of claim 1 further comprising:
a handle; and
an actuator residing within the handle coupled to the bridge to cause lateral motion of the bridge by applying a force.

### Claim 4 (depends on 3)

The shaving razor of claim 3 further comprising:
a pair of stops that engage the linkages to provide a pivot point to cause motion of the second blade assembly relative to the first blade assembly when the actuator applies the force.

### Claim 5 (depends on 4)

The shaving razor of claim 4 wherein the actuator comprises a voice coil and wherein a change in direction of magnetic flux in the voice coil limits a range of motion of the bridge to be in a range from 0.1 mm to less than 0.5 mm.

### Claim 6 (depends on 3)

The shaving razor of claim 3 further comprising:
a third blade assembly having at least one blade, the third blade assembly coupled to the first blade assembly by the first and second linkages, wherein the linkages each have a second living hinge disposed between the first and third blade assemblies.

### Claim 7 (depends on 6)

The shaving razor of claim 6 wherein consecutive ones of the blade assemblies moves in opposite directions.

### Claim 8 (depends on 3)

The shaving razor of claim 3 where in the actuator comprises:
an armature; and
an armature housing.

### Claim 9 (depends on 1)

The shaving razor of claim 1 wherein an amplitude of the movement in of the first blade assembly in the first direction is substantially equal to an amplitude of the movement in the second blade assembly in the opposite direction.