公开(公告)号：US07006557B2

公开(公告)日：2006-02-28

申请号：US10061873

申请日：2002-01-31

Applicant: Parvathanathan Subrahmanya ,  Kevin J. Clark

Inventor： Parvathanathan Subrahmanya ,  Kevin J. Clark

IPC: H04B1/69

CPC classification number: H04B1/7085 ,  H04B7/0613 ,  H04B2201/70701 ,  Y02D70/40 ,  Y02D70/444

Abstract: Techniques for time tracking diversity pilots are disclosed. In one aspect, an early and a late energy calculation is made on each incoming symbol using a first pilot sequence for despreading. The difference between the two energies is used to drive a tracking loop, which generates a time reference for producing a first pilot estimate and a second pilot estimate, the two estimates used for demodulating data. In another aspect, the early and late energies are made including a plurality of incoming symbols, the number of which corresponds to the number of symbols in a run of positive or negative values in an orthogonalizing sequence. The orthogonalizing sequence is used to generate a second pilot sequence from a first pilot sequence, the resulting second pilot sequence being orthogonal to the first. These aspects have the benefit of simplifying the hardware or processing steps required for transmit diversity time tracking, resulting in cost savings, power savings, simplicity of design, and the like.

公开(公告)号：US10913526B2

公开(公告)日：2021-02-09

申请号：US16444494

申请日：2019-06-18

Applicant: Kevin J. Clark

Inventor： Kevin J. Clark

IPC: B63J2/02

Abstract: A boat chiller system (1) wherein a self-contained externally cooled fresh water supply is used in place of water in which the boat is docked, such as seawater, to transfer heat from an interior space of a boat (4) to outside of the boat. The use of recirculated fresh water eliminates barnacle growth in an onboard water cooled a/c system (2) and/or excess barnacles and other sea life from growing near an external water discharge (12) on the boat as would occur with the discharge of heated sea water in a conventional boat a/c system.

公开(公告)号：US4794701A

公开(公告)日：1989-01-03

申请号：US139818

申请日：1987-12-30

Applicant: Kevin J. Clark

Inventor： Kevin J. Clark

IPC: B23D59/00 ,  B25H1/00 ,  G01C9/20 ,  G01C9/28

CPC classification number: G01C9/20 ,  B23D59/002 ,  B25H1/0085

Abstract: A level device for a chainsaw is formed from a hollow closed transparent plastic tube filled with a colored liquid. An air bubble is trapped in the liquid within the tube. Alignment indicia in the form of perpendicular intersecting lines are inscribed on the cylindrical side wall of the tube and on both end faces. An aluminum mounting bracket consists of a pair of spaced circular rings connected by a strut. A standard extends perpendicular to the strut, and is attached thereto at a point equidistant from each of the rings. A slotted mounting prong is formed at the free end of the standard for engagement with a threaded fastener on a chainsaw. In use, the device functions as a spirit level for making horizontal and vertical cuts with the blade of the chainsaw.

Abstract translation: 用于链锯的液位装置由填充有彩色液体的中空封闭透明塑料管形成。 气泡被捕获在管内的液体中。 垂直相交线形式的对准标记刻在管的圆柱形侧壁和两个端面上。 铝安装支架由一对通过支柱连接的间隔开的圆环组成。 标准垂直于支柱延伸，并且在与每个环等距的点处附接到支柱。 在标准的自由端处形成有开槽的安装插脚，用于与链锯上的螺纹紧固件接合。 在使用中，该装置作为水平和垂直切割与锯条的水平作用。