Troxler Electronic Laboratories, Inc.

James Daniel Pratt, Jr

Robert Ernest Troxler

Andrew Kirk Dummer

Raffaello Verna

William Finch Troxler, Jr

James Edward Bartlett

Michael E Bienvenu

John Pjura

Ralph L Ely, Jr

Robyn Lyn Myers

Dirk Steckman

Michael Eric Bienvenu

Robert Lyn Myers

Nuclear gauges, their components and method for assembly and adjustment of the same are provided. The nuclear gauges are used in measuring the density and/or moisture of construction-related materials. The nuclear gauge can include a gauge housing having a vertical cavity therethrough and at least one radiation detector located within the housing. The nuclear gauge can include a vertically moveable source rod and a radiation source operatively positioned within a distal end of the source rod. The nuclear gauge can also include a radiation shield assembly.

Nuclear gauges and related methods of assembly

An apparatus for determining a dimension of a construction material is provided. At least one material-interacting device is configured to interact with the construction material so as to determine at least one surface characteristic thereof. A computer device is configured to be capable of receiving the at least one surface characteristic from the at least one material-interacting device, and to manipulate the at least one surface characteristic so as to form a multi-dimensional representation of the construction material. The computer device is further configured to determine the surface or volume characteristic of the construction material from the multi-dimensional representation thereof. By determining the mass of the construction material, the density of the construction material can be provided. An associated method is also provided.

Method of determining a dimension of a sample of a construction material and associated apparatus

An apparatus for determining a volume of a construction material sample is provided. At least one sample-interacting device is configured to interact with the construction material sample so as to determine at least one surface characteristic thereof. A computer device is configured to be capable of receiving the at least one surface characteristic from the at least one sample-interacting device, and to manipulate the at least one surface characteristic so as to form a three-dimensional representation of the construction material sample. The computer device is further configured to determine the volume of the construction material sample from the three-dimensional representation thereof. By determining the mass of the construction material sample, the density of the construction material sample can be provided. An associated method is also provided.

A system adapted to determine a property of a paving-related material is provided. Such a system comprises a central computing system housing database, such as a geographic information system (GIS). A measuring device for selectively and directly measuring the property of the paving-related material is remotely disposed with respect to the central computing system and operably engaged with a locating device, such as a global positioning system (GPS) device, for determining a location of the measuring device when the property of the paving-related material is selectively measured thereby. A portable handheld computer device is in communication with the measuring device, the locating device, and the central computing system, wherein the handheld computer device is configured to receive data, comprising the measured property of the paving-related material and the corresponding location of the measuring device when the property is selectively measured thereby, from the measuring device and the locating device, and to communicate the data with the central computing system for incorporation of the data into the database. An associated device, apparatus, and method are also provided.

Measurement device incorporating a locating device and a portable handheld computer device and associated apparatus, system and method

An instrument and a method are provided for determining the moisture and cement contents of fresh concrete and for calculating and displaying to the user of the instrument the projected strength of the concrete. The instrument has two probes, each probe containing a low-activity nuclear source. The probes are stored in shielded receptacles in a housing when not in use. The user calibrates the probes with reference to concrete compositions of known cement and water content, and then for field use separately inserts each probe into the access tube of a sample pan filled with concrete to obtain counts corresponding to moisture content and cement content. An electronics unit is attached to the housing for storing the correlations and performing the calculations.

Apparatus and method for measuring physical characteristics of materials

Nuclear density gauges of the type having a gamma source which is positionable at several different source depth positions with respect to a detector are calibrated in an efficient and advantageous manner by a calibration procedure which reduces the number of experimental counts which must be taken. In accordance with the present invention, a single calibration block is employed and counts are taken at one or more source depth positions on the block. Through the use of historically derived relationships between the count rate obtained from the calibration block to the count rates obtained from at least two different calibration blocks of other known densities, the expected calibration counting rates for the other blocks can be obtained. These calculated counting rates are then used along with the experimentally determined counting rate to obtain the calibration constants for the gauge.

Growing community of inventors

Raleigh, NC, United States of America

James Daniel Pratt, Jr