公开(公告)号：US20080216473A1

公开(公告)日：2008-09-11

申请号：US12041847

申请日：2008-03-04

Applicant: Seong Hun KIM

Inventor： Seong Hun KIM

IPC: B60T11/26

CPC classification number: B60T11/16 ,  B60T11/236

Abstract: A master cylinder of a brake is disclosed. The master cylinder includes a cylinder body connected with an oil tank and defining therein a first pressure chamber and a second pressure chamber, which are separated from each other by a partition, a first piston to perform reciprocating movements in the first pressure chamber, a second piston to perform reciprocating movements in the second pressure chamber, a first return spring to elastically support the first piston in the first pressure chamber, and a second return spring to elastically support the second piston in the second pressure chamber. The first piston has a plurality of recesses formed at one end thereof to assure smooth supply of oil during braking. The master cylinder has the effects of assuring smooth supply of brake oil during braking, and preventing fluctuation of a piston therein.

Abstract translation: 公开了一种制动器的主缸。 主缸包括与油箱连接的缸体，其中限定有通过隔板彼此分离的第一压力室和第二压力室，用于在第一压力室中进行往复运动的第一活塞，第二压力室 活塞，以在所述第二压力室中进行往复运动;第一复位弹簧，用于弹性地支撑所述第一压力室中的所述第一活塞;以及第二复位弹簧，用于将所述第二活塞弹性地支撑在所述第二压力室中。 第一活塞在其一端形成有多个凹槽，以确保在制动期间平稳地供应油。 主缸具有在制动期间确保制动油的平稳供给并防止其中的活塞的波动的效果。

公开(公告)号：US20100255847A1

公开(公告)日：2010-10-07

申请号：US12752749

申请日：2010-04-01

Applicant: Neung Hyung LEE ,  Seong Hun KIM ,  Sung Oh KWON

Inventor： Neung Hyung LEE ,  Seong Hun KIM ,  Sung Oh KWON

IPC: H04B7/005 ,  H04W36/34

CPC classification number: H04W74/004 ,  H04W52/362 ,  H04W52/367 ,  H04W52/50 ,  H04W74/0833

Abstract: A method and an apparatus are provided that transmit and receive a random access preamble in a wireless communication system. A plurality of random access parameters having different values in accordance with a plurality of events for triggering random access are set. When one of the plurality of events for triggering random access has occurred, random access is performed according to at least one of the plurality of random access parameters corresponding to the event. Therefore, the time delay of random access can be reduced.

Abstract translation: 提供一种在无线通信系统中发送和接收随机接入前同步码的方法和装置。 设置根据用于触发随机访问的多个事件具有不同值的多个随机访问参数。 当发生用于触发随机接入的多个事件之一时，根据对应于该事件的多个随机接入参数中的至少一个执行随机接入。 因此，可以减少随机存取的时间延迟。