# US 10,865,597 B2 · Furniture part and damping device thereof

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

- Number: US 10,865,597 B2
- Document ID: US10865597B2
- Status: Granted
- Kind: B2
- Application number: 15/978,179
- Filed: 2018-05-13
- Published: 2019-05-09
- Granted: 2020-12-15
- Earliest claimed: 2017-11-06
- Assignees: King Slide Works Co., Ltd.; King Slide Technology Co., Ltd.
- Applicants: King Slide Works Co., Ltd.; King Slide Technology Co.,Ltd.
- Inventors: Ken-Ching Chen; Hsiu-Chiang Liang; Chun-Chiang Wang
- Web page: https://patentgrep.com/patent/US10865597B2

## CPC

- E05F 5/027: {with closing action}
- F16F 9/5126: {Piston, or piston-like valve elements (F16F9/504 takes precedence)}
- E05F 1/16: for sliding wings
- F16F 9/0227: {characterised by the piston construction}
- F16F 9/19: with a single cylinder {and of single-tube type}
- F16F 9/3214: {of pistons (F16F9/0227 and F16F9/36 take precedence; throttling passages in or on piston body F16F9/3405)}
- F16F 9/3485: {characterised by features of supporting elements intended to guide or limit the movement of the annular discs (F16F9/3488 takes precedence)}
- F16F 9/483: {characterised by giving a particular shape to the cylinder, e.g. conical}
- F16F 9/516: resulting in the damping effects during contraction being different from the damping effects during extension {, i.e. responsive to the direction of movement (F16F9/504 takes precedence)}
- F16F 13/007: {the damper being a fluid damper}
- E05F 3/12: Special devices controlling the circulation of the liquid, e.g. valve arrangement ({E05F3/223 takes precedence}; valves per se F16K)
- E05F 5/10: with piston brakes
- E05Y 2201/22: Locks
- E05Y 2201/232: by automatically acting means
- E05Y 2201/256: with pistons or vanes
- E05Y 2201/458: Valves
- E05Y 2400/3014: Back driving the transmission or motor
- E05Y 2800/24: of springs and brakes
- E05Y 2900/20: for furniture, e.g. cabinets
- F16F 2230/18: Control arrangements
- E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF

## Abstract

A damping device includes a housing and a piston. The housing has an inner wall, and a chamber is defined by the inner wall. The chamber has a damping medium filled therewith. The piston is movable in the chamber, wherein the inner wall has a plurality of inner diameters.

## Claims

### Claim 1

A damping device, comprising:
a housing having an inner wall, a top portion having an opening and a bottom portion being a closed end, a chamber being defined by the inner wall and having a damping medium filled therewith, wherein the inner wall has a first inner diameter, a second inner diameter and a third inner diameter, the first inner diameter is greater than the second inner diameter, the second inner diameter is greater than the third inner diameter;
a piston movable in the chamber along a substantially linear direction;
wherein the chamber between the piston and the top portion of the housing defines a first zone, the chamber between the piston and the bottom portion of the housing defines a second zone, the damping medium is filled in the first zone and the second zone, and the first zone communicates with the second zone;
a base connected to the piston through an extending portion, both of the base and the piston comprising a passage respectively for allowing the damping medium to pass through, such that the first zone communicates with the second zone; and
a spring directly connected to the base, the spring being configured to provide an elastic force to one of the piston and the base;
wherein the spring and the base are located in the second zone, when the damping device is providing a damping effect, the piston is moved from a position in the housing with the first inner diameter to a position in the housing with the second inner diameter or from the position in the housing with the second inner diameter to a position in the housing with the third inner diameter.

### Claim 2 (depends on 1)

The damping device of claim 1, wherein the inner wall has the first inner diameter, the second inner diameter and the third inner diameter from the top portion to the bottom portion of the housing in order.

### Claim 3 (depends on 1)

The damping device of claim 1, wherein the damping device further comprises a controller, the controller is disposed between the piston and the base, and the controller comprises a control member and a resilient member, wherein the control member is capable of closing a portion or all portions of the passage of the piston, wherein the resilient member is configured to provide a resilient force for the control member to no longer close the passage of the piston.

### Claim 4 (depends on 3)

The damping device of claim 3, wherein the controller is movably mounted to the extending portion.

### Claim 5 (depends on 4)

The damping device of claim 4, wherein when the control member is located in a predetermined position, the control member is capable of closing the portion or all portions of the passage of the piston, and the resilient member is configured to provide the resilient force for the control member to be able to depart from the predetermined position.

### Claim 6 (depends on 3)

The damping device of claim 3, wherein the control member and the resilient member are separate parts.

### Claim 7 (depends on 6)

The damping device of claim 6, wherein the control member defines a space, and the space is configured to accommodate the resilient member.

### Claim 8 (depends on 6)

The damping device of claim 6, wherein the piston comprises a connecting portion and a contacting portion, the connecting portion and the contacting portion are spaced by a step difference, the base is connected to the connecting portion of the piston through the extending portion, the control member is capable of abutting against the contacting portion to close the portion or all portions of the passage of the piston, and the resilient member deforms elastically through the step difference so as to accumulate the resilient force.

### Claim 9 (depends on 3)

The damping device of claim 3, wherein the control member and the resilient member are integrally formed as a unitary part.

### Claim 10 (depends on 9)

The damping device of claim 9, wherein the piston comprises a connecting portion and a contacting portion, the connecting portion and the contacting portion are spaced by a step difference, the base is connected to the connecting portion of the piston through the extending portion, the control member is capable of abutting against the contacting portion to close the portion or all portions of the passage of the piston, and the resilient member deforms elastically through the step difference so as to accumulate the resilient force.

### Claim 11 (depends on 3)

The damping device of claim 3, further comprising an extending member movable relative to the housing through the piston, and a portion of the extending member extending out of the chamber.

### Claim 12

A damping device, comprising:
a housing having an inner wall, a top portion having an opening and a bottom portion being a closed end, a chamber being defined by the inner wall and having a damping medium filled therewith, wherein the inner wall has a first inner diameter, a second inner diameter and a third inner diameter, the first inner diameter is greater than the second inner diameter, the second inner diameter is greater than the third inner diameter;
a piston movable in the chamber, wherein the chamber between the piston and the top portion of the housing defines a first zone, the chamber between the piston and the bottom portion of the housing defines a second zone, the damping medium is filled in the first zone and the second zone;
a base connected to the piston through an extending portion, both of the base and the piston comprising a passage respectively for allowing the damping medium to pass through, such that the first zone communicates with the second zone;
a controller disposed between the passage of the base and the passage of the piston; and
a spring directly connected to the base, wherein the spring is configured to provide an elastic force to one of the piston and the base, the spring and the base are located in the second zone;
wherein the controller is movably mounted to the extending portion;
wherein when the damping device is providing a damping effect, the piston is moved from a position in the housing with the first inner diameter to a position in the housing with the second inner diameter or from the position in the housing with the second inner diameter to a position in the housing with the third inner diameter.

### Claim 13 (depends on 12)

The damping device of claim 12, wherein the inner wall has the first inner diameter, the second inner diameter and the third inner diameter from the top portion to the bottom portion of the housing in order.

### Claim 14 (depends on 12)

The damping device of claim 12, wherein the controller comprises a control member and a resilient member, when the control member is located in a predetermined position, the control member is capable of closing a portion or all portions of the passage of the piston, and the resilient member is configured to provide a resilient force for the control member to be able to depart from the predetermined position.

### Claim 15 (depends on 12)

The damping device of claim 12, further comprising an extending member, and the extending member being movable relative to the housing through the piston.