Method and apparatus for leveling manhole cover frames

申请公布号：US6371687(B1)

申请号：US20000499583

申请日期：2000.02.07

申请公布日期：2002.04.16

申请人：

HEINTZ MARC S.;ABLEMAN JAMES L.

发明人：HEINTZ MARC S.;ABLEMAN JAMES L.

分类号：E02D29/14;(IPC1-7):E02D29/14

主分类号：E02D29/14

摘要：A manhole cover frame leveling clip, that attaches by a friction fit to the exterior peripheral flange of a manhole cover frame, and uses an adjustable bolt running through the clip, to manipulate the height and angle of the frame so that the frame is in the same plane or the correct elevation with the finished grade of the roadway surface.

Method for controlling the acquisition and/or evaluation operation of image data in medical examinations

Computed tomography device including transmitters for contactless transmission of data and electrical power

Methods and circuits for controlling drive mechanisms

Constant bit rate padding of MPEG transport streams

Uplink transport format selection

Coordinated queuing between upstream and downstream queues in a network device

Route servicing device, method and system applying the device

Method and device for obtaining crosstalk information

Objective lens and optical pickup device

Method and system for providing configurable application processing in support of dynamic human interaction flow

Non-contacting rotary joint with clock modulation

Head for thermally assisted magnetic recording device and thermally assisted magnetic recording device

Sense amplifiers and semiconductor devices including the same

Flash memory device operating at multiple speeds

Rectifier circuit and three-phase rectifier device

Central pressuring fan with bottom inlets for notebook cooling

Ionizer with drop-off prevention device for electrode

Superconducting coil quench detection method and device, and superconducting power storage unit

Close-up lens, imaging apparatus, and method for focusing close-up lens

Apparatus and methods of broadband second harmonic generation