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MarketScreener Homepage  >  Equities  >  TAIWAN STOCK EXCHANGE  >  Lee Chi Enterprises Co., Ltd.    1517   TW0001517001

LEE CHI ENTERPRISES CO., LTD.

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Patent Issued for Self-Sealing Hydraulic Device (USPTO 10,363,914): Lee Chi Enterprises Co. Ltd.

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08/14/2019 | 05:47pm EDT

2019 AUG 14 (NewsRx) -- By a News Reporter-Staff News Editor at Taiwan Daily Report -- According to news reporting originating from Alexandria, Virginia, by NewsRx journalists, a patent by the inventors Chuang, Hsiang-Yu (Changhua, Taiwan); Liu, Wen-Tsung (Chang Hwa, Taiwan), filed on December 14, 2017, was published online on August 12, 2019.

The assignee for this patent, patent number 10,363,914, is Lee Chi Enterprises Co. Ltd. (Changhua, Changhua County, Taiwan).

Reporters obtained the following quote from the background information supplied by the inventors: “The present invention relates to a hydraulic device, and more particularly to a self-sealing hydraulic device that is able to prevent leakage in use.

“A conventional hydraulic bicycle system has been disclosed in China Patent Publication No. 105775022 and US Patent Publication No. 2016/0200392. The conventional hydraulic bicycle system has a brake hand lever assembly, a hose assembly, and a brake caliper assembly. The brake hand lever assembly and the brake caliper assembly communicate with each other via the hose assembly. In a nutshell, the abovementioned conventional hydraulic bicycle system only provides a port valve mounted inside the brake hand lever assembly to prevent hydraulic oil from leaking from the brake hand lever assembly. However, the hose assembly is not equipped with any leak-proof structure. Therefore, once the hose assembly is detached from the brake hand lever assembly, a cap or a caliper may be used to seal the hose assembly to prevent leakage of the hydraulic oil inside the hose assembly. Otherwise, the hydraulic oil inside the hose assembly may leak from the hose assembly and contaminate a user’s clothes or the environment.

“To overcome the shortcomings of the conventional hydraulic bicycle system, the present invention provides a self-sealing hydraulic device to mitigate or obviate the aforementioned problems.”

In addition to obtaining background information on this patent, NewsRx editors also obtained the inventors’ summary information for this patent: “The main objective of the present invention is to provide a self-sealing hydraulic device that is able to simultaneously seal both a connecting assembly and a hydraulic assembly of the self-sealing hydraulic device.

“The self-sealing hydraulic device comprises a connecting assembly and a hydraulic assembly. The connecting assembly has an adaptor having a shell, a male fitting, and a barb fitting. The male fitting is mounted in the shell, is axially moveable relative to the shell, and has an axial hole and a radial hole orthogonally communicating with the axial hole. The radial hole is sealed by the shell. The barb fitting is connected to and communicates with both the shell and a hose. The hydraulic assembly is assembleable to the connecting assembly and has a housing, an elastic element, and a valve unit. The housing has a hydraulic chamber and an assembling hole communicating with the hydraulic chamber via a through hole. The elastic element is disposed in the housing. The valve unit is disposed inside the hydraulic chamber and driven by the elastic element to seal the through hole.

“Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.”

The claims supplied by the inventors are:

“What is claimed is:

“1. A self-sealing hydraulic device comprising: a connecting assembly having a hose with a channel therein; and an adaptor having a shell having an axis; a first end face; a second end face; a protrusion disposed adjacent to the second end face of the shell; a fillet portion connected to the protrusion and contacted by an O-ring mounted on and around the protrusion; an activity chamber formed inside the shell and having a bottom; a first recess defined in the first end face; a second recess defined in the second end face of the shell; a bore defined in the bottom of the activity chamber, the activity chamber and the second recess communicating with each other via the bore; a male fitting mounted in the shell, being moveable relative to the shell along the axis of the shell, and having a first end; a second end opposite the first end of the male fitting; an abutting portion extending till the second end of the male fitting, passing through the bore, and extending out of the second recess; a blocking portion disposed at the first end of the male fitting, received in the activity chamber, and capable of being blocked by the bottom of the activity chamber; an axial hole radially defined through the abutting portion and disposed between the first end of the male fitting and the second end of the male fitting, and extending along the axis of the shell; a radial hole orthogonally communicating with the axial hole and sealed by the shell; and an indention formed in the abutting portion, disposed at the second end of the male fitting, and communicating with the radial hole via the axial hole; a barb fitting connected to and communicating with both the shell and the hose; wherein when the male fitting is mounted to the shell, the blocking portion abuts against the bottom of the activity chamber to block the bore and the activity chamber, and the radial hole is disposed in the bore; and a hydraulic assembly being assembleable to the connecting assembly and having a housing having a hydraulic chamber; and an assembling hole communicating with the hydraulic chamber via a through hole; an elastic element disposed in the housing; and a valve unit disposed inside the hydraulic chamber and driven by the elastic element to seal the through hole; wherein when the connecting assembly is connected to the hydraulic assembly, the fillet portion pushes the O-ring to abut against a bottom of the assembling hole to prevent leakage from the housing; when the connecting assembly is connected to the hydraulic assembly, the second end of the male fitting abuts against the valve unit, and the blocking portion is detached from the bottom of the activity chamber to make the bore communicate with the activity chamber; wherein when the connecting assembly is connected to the hydraulic assembly, the adaptor is inserted in the assembling hole, and the male fitting and the valve unit drive each other mutually to make the radial hole and the through hole unsealed by the shell and the valve unit respectively and to make the connecting assembly and the hydraulic assembly communicate with each other; and when the connecting assembly is detached from the hydraulic assembly, the adaptor moves out from the assembling hole, and the male fitting is detached from the valve unit to make the radial hoe and the through hole sealed by the shell and the valve unit respectively.

“2. The self-sealing hydraulic device as claimed in claim 1, wherein the blocking portion is connected to the abutting portion and has multiple blocks annularly arranged; the male fitting has a gap formed between each two adjacent blocks of the multiple blocks; a receiving groove annularly formed in the multiple blocks; and a seal mounted on and around the abutting portion, disposed in the receiving groove, and contacting the bottom of the activity chamber to block the bore and the activity chamber.

“3. The self-sealing hydraulic device as claimed in claim 2, wherein the connecting assembly has an abutted flange connected to the abutting portion and disposed out of the shell; a compression spring mounted around the abutting portion and having two opposite ends respectively abutting against the abutted flange and a bottom of the second recess.

“4. The self-sealing hydraulic device as claimed in claim 1, wherein the first recess of the shell communicates with the activity chamber; the barb fitting has a connecting portion; a barb section integrally formed on the connecting portion; a conical hole disposed in the connecting portion; and a straight hole disposed in the barb section and communicating with the conical hole; and when the barb fitting is connected to the shell, the connecting portion is inserted through the first recess and is connected to the shell, and the barb section is inserted in the channel of the hose such that the channel of the hose, the straight hole, the conical hole of the barb fitting, and the activity chamber of the shell communicate with one another.

“5. The self-sealing hydraulic device as claimed in claim 4, wherein the connecting portion of the barb fitting is screwed with the shell.

“6. The self-sealing hydraulic device as claimed in claim 1, wherein the protrusion has a chamfer portion; and a restricting groove disposed between the chamfer portion and the fillet portion to restrict the O-ring.

“7. The self-sealing hydraulic device as claimed in claim 1, wherein the connecting assembly has a connecting unit having a central hole; and an abutting chamfer formed at an end of the central hole; the shell has an abutted chamfer formed in the first end face of the shell; and the abutting chamfer of the connecting unit contacts the abutted chamfer of the shell to make the O-ring abut against the bottom of the assembling hole.

“8. The self-sealing hydraulic device as claimed in claim 1, wherein the valve unit has a checking portion having a polygonal cross section with multiple corners and multiple lateral faces; a rod portion formed on the checking portion and extending toward the through hole; a holding groove formed in the checking portion and surrounding the rod portion; and a sealing O-ring mounted in the holding groove; when the checking portion is disposed in the hydraulic chamber, the multiple corners of the checking portion contact an internal surface of the hydraulic chamber of the housing to restrict the checking portion to move along the hydraulic chamber, and the sealing O-ring facilitates the rod portion to block the through hole; and when the connecting assembly and the hydraulic assembly communicate with each other, each one of the multiple lateral faces of the checking portion is spaced from the internal surface of the hydraulic chamber of the housing by a passage.

“9. The self-sealing hydraulic device as claimed in claim 8, wherein the hydraulic assembly is connected to a hydraulic brake having a connecting port; the hydraulic chamber of the housing communicates with the inside of the connecting port; the elastic element has two opposite ends; one of the two opposite ends of the elastic element abuts against a bottom of the connecting port of the hydraulic brake to provide a force for the checking portion and the sealing O-ring to seal the through hole.

“10. The self-sealing hydraulic device as claimed in claim 8, wherein the hydraulic assembly is integrally formed on a brake lever assembly; the brake lever assembly has a brake lever being able to swing between an active position and an inactive position; the hydraulic assembly has a piston assembly inserted in the hydraulic chamber of the housing and connected to the brake lever of the brake lever assembly; and the elastic element is disposed between the piston assembly and the checking portion to provide a force for the checking portion and the sealing O-ring to seal the through hole.”

For more information, see this patent: Chuang, Hsiang-Yu; Liu, Wen-Tsung. Self-Sealing Hydraulic Device. U.S. Patent Number 10,363,914, filed December 14, 2017, and published online on August 12, 2019. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=10,363,914.PN.&OS=PN/10,363,914RS=PN/10,363,914

(Our reports deliver fact-based news of research and discoveries from around the world.)

Copyright © 2019 NewsRx LLC, Taiwan Daily Report, source Geographic Newsletters

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Managers
NameTitle
Yu-Hsin Lin Chairman & General Manager
Yi Hsien Lin Director, Head-Finance & Accounting & Deputy GM
Ming Yang Chu Director & Assistant Manager
Tsung Ying Lin Director
Kuei Tuan Chen Independent Director
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