Donald B Larson

US Patent:

20130315656, Nov 28, 2013

Filed:

May 22, 2013

Appl. No.:

13/900527

Inventors:

Donald B. Larson - Tampa FL, US

International Classification:

F16B 7/04

US Classification:

403187

Abstract:

A device and system for holding materials above a created ribbing structure. The device has two unique and novel slip fittings connected together via a plastic pipe that has been cut to a useful length. The slip fittings have a cylindrical attachment port and two wings that serve as the anchor point for a surface. The wings are flat surfaces integrally formed with the cylindrical attachment port and have frictional material attached to the underside thereof. Optional holes are provided on either wing so as to permit a fastener attachment.

US Patent:

51405407, Aug 18, 1992

Filed:

Jul 30, 1990

Appl. No.:

7/559795

Inventors:

Bruce W. Cheney - Sherwood OR
Donald C. Larson - Beaverton OR
Arnold M. Frisch - Portland OR

Assignee:

TriQuint Semiconductor, Inc. - Beaverton OR

International Classification:

G06F 102

US Classification:

364718

Abstract:

In a pipelined direct digital synthesis system (FIG. 3), new increment data (124) and/or phase modulation data (122) are input delay equalized by providing the data to a series of switch blocks (132), each switch block corresponding to a stage of the accumulator (124). Each switch block includes a multiplexer (132) for selecting among the new increment data, phase modulation data, and previously stored increment data, and includes a flip-flop circuit (134) for storing the selected increment data. A shift register (140) provides select signals (146) to each of the multiplexers. In operation, as a single bit propagates through the shift register, the select signals sequentially control the multiplexers to sequentially interleave blocks of selected increment data into respective accumulator stages in ascending order of binary significance. The invention thereby substantially reduces the input delay equalization circuitry necessary for coherent operation.