# US 11,028,890 B2 · Wheel cylinder adjuster

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- Number: US 11,028,890 B2
- Document ID: US11028890B2
- Status: Granted
- Kind: B2
- Application number: 16/429,190
- Filed: 2019-06-03
- Published: 2020-07-30
- Granted: 2021-06-08
- Earliest claimed: 2019-01-25
- Assignees: Chien Yu Hong Co., Ltd.
- Applicants: Chien Yu Hong Co., Ltd.
- Inventors: Chang-Ta Tsai
- Web page: https://patentgrep.com/patent/US11028890B2

## CPC

- F16D 65/0043: {Brake maintenance and assembly, tools therefor}
- B23P 19/04: for assembling or disassembling parts
- B25B 27/0035: {for motor-vehicles (wrenches for mounting or dismounting wheels B60B29/003)}
- F16H 25/14: with reciprocation perpendicular to the axis of rotation (crank or eccentric gearings without swinging connecting-rod F16H21/36)
- F16H 25/16: for interconverting rotary motion and oscillating motion
- B60S 5/00: Servicing, maintaining, repairing, or refitting of vehicles (vehicles adapted to carry a workshop for servicing or maintenance B60P3/14; servicing rail locomotives B61K)
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
- B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- F16H: GEARING
- B60S: SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR

## Abstract

A wheel cylinder adjuster includes a rotational disc, an axle, two guiding discs and two groups of claws. An oval slot extends in a first side of the rotational disc. A flower-shaped slot extends in a second side of the rotational disc. The axle is inserted in the axial aperture of the rotational disc. The first guiding disc is connected to the axle against the first side and includes two opposite radial slots. The second guiding disc is connected to the axle against the second side and includes three radial slots. Each claw in the first group is movably inserted in one of the slots of the first guiding disc and includes an insert movably inserted in the oval slot. Each claw in the second group is movably inserted in one of the slots of the second guiding disc and includes an insert movably inserted in the flower-shaped slot.

## Claims

### Claim 1

A wheel cylinder adjuster comprising:
a rotational disc comprising an axial aperture, a first side, an oval slot made in the first side centered at the axial aperture, a second side, and a flower-shaped slot made in the second side centered at the axial aperture, wherein the flower-shaped slot comprises at least three arched slots connected to one another at connective points;
an axle rotationally inserted in the axial aperture of the rotational disc;
a first guiding disc connected to the axle against the first side and formed with two opposite radial slots;
a second guiding disc connected to the axle against the second side and formed with at least three radial slots separated from one another by identical angles;
a first group of claws each of which is movably inserted in one of the radial slots of the first guiding disc and comprises an axial insert movably inserted in the oval slot;
a second group of claws each of which is movably inserted in one of the radial slots of the second guiding disc and comprises an axial insert movably inserted in the flower-shaped slot; and
a connective mechanism for causing the axle and the first and second guiding discs to rotate together.

### Claim 2 (depends on 1)

The wheel cylinder adjuster according to claim 1, wherein the connective mechanism comprises keys and recesses amid the axle, the first guiding disc and the second guiding disc.