David R Geary

US Patent:

20060265989, Nov 30, 2006

Filed:

May 24, 2006

Appl. No.:

11/420099

Inventors:

David Geary - Northborough MA, US

International Classification:

E04D 1/00

US Classification:

052518000

Abstract:

A self-aligning roofing shingle with a shingle body defining a top edge, and at least two spaced locating features proximate the top edge of the shingle body, each locating feature defined by a projection and an indentation, wherein a projection of one shingle in a first course of shingle locates in an indentation of a mating shingle in an adjacent course of shingles.

US Patent:

45688753, Feb 4, 1986

Filed:

Jan 6, 1984

Appl. No.:

6/568671

Inventors:

John S. Piso - Framingham MA
David M. Geary - Natick MA

Assignee:

Micro Sensors Incorporated - Holliston MA

International Classification:

G01R 2726

US Classification:

324 61R

Abstract:

Measurements of yarn denier using capacitance transducers are automatically corrected for moisture. Samples of the yarn to be run are tested at different moisture levels at different frequencies in each of two capacitance transducers. The difference in the apparent denier outputs of the two transducers has been found to be proportional to moisture content. The difference is added to one of the measured values to provide a more correct reading. The difference may be further corrected by a factor derived from the slopes of the curves of transducer output vs. moisture and the slope of the curve of skein denier vs. moisture.