American Sigma, Inc.

Other

William D Dickinson

James Mirand

Donald F Kaiser

William G Hungerford

Dean Agostini

Richard Wissenbach

David Gnewikow

A listening device is disclosed for positioning in an ear canal of a user to process an environmental sound signal. The device can include an earpiece positionable in the ear canal of the user. A microphone can be positioned on the earpiece for receiving the environmental sound signal when the earpiece is positioned in the user's ear canal. A sound processing unit can be electrically coupled with the microphone, the sound processing unit programmed to produce a processed sound signal by identifying a target sound signature within the environmental sound signal received from the microphone, and modifying the identified target sound signature within the processed sound signal. A speaker can be electrically coupled to the sound processing unit, the speaker configured to project the processed sound signal as audible sound.

Hearing enhancement and protection device

A fluid sampling apparatus provided as a unitary structure which automatically collects fluid samples according to modes of operation selected by a user, while monitoring an analyte of interest on a real-time basis on the basis of signals from a fiber optic sensor, and collecting and storing sampling and analyte data for later retrieval. The user may select from various modes of operation, including sampling triggered by a predetermined value(s) of the analyte, flow proportional sampling, and/or sampling at predetermined time intervals. The apparatus includes a self-contained microprocessor, together with associated program and data memory, for automatically controlling sampling operations, calculating analyte values on the basis of signals from the fiber optic sensor, calculating flow rate on the basis of signals from a flow sensing arrangement, and storing data relating to sample collection, analyte levels, and flow rate. The apparatus is further adapted to measure and store the actual discharge volume of the analyte loaded into a receiving fluid body, with the program memory being programmed to calculate loading values on the basis of flow rate values and analyte values as detected from any type of sensor capable of in situ real-time analyte measurement. Stored data can be called up on a display of the apparatus, or transferred to an external output device via a modem and telecommunication network or a portable data transfer unit.

Automatic fluid monitoring and sampling apparatus and method

A fiber optic system and method in which the transmission of light through a fiber optic core of a fiber optic element is stabilized and optimized by eliminating the destabilizing effect of light independently propagated along the clad of the fiber optic element. The propagation of light along the clad may be essentially eliminated by a field stop member disposed between a light-receiving end of the fiber optic element and an LED light source, whereby light from the LED is entirely shielded from the clad. The field stop member is particularly effective when used in a fiber optic sensor, wherein the effect of clad light on transmission of light through the core is particularly destabilizing. Alternative structures for mitigating or eliminating the destabilizing effect of clad light are also provided in the form of alterations of the clad structure, or by providing a clad light stop diaphragm at the light-emitting end of the fiber optic element. Also provided is an aperture stop member, which may or may not be integrally formed with the field stop member, to optimize light propagation along the core by focusing light from an LED onto the light-receiving end of the core.

Fiber optic system and method

A convertible and variable-length groundwater device permitting conversion of one type of groundwater sampling device to another, and vice versa. Conversion between a bailer device and a gas-drive pump, or a bailer device and a bailer pump, for example, is readily accomplished by substituting particular components from an assortment of universal, unique and multi-use components adapted to mate one with another and to be assembled substantially without the use of tools. Variable-length bladder devices, gas-drive pumps and bladder pumps are also provided, each being convertible between at least a single- and double-length assembly merely by adding or removing various components.

Convertible and variable-length groundwater devices, components

A self-cycling pump apparatus wherein a valve functioning as a pump cycling device is connected to the pump so that it may be lowered together with the pump to a submerged position in a sub-surface fluid for lifing the sub-surface fluid to ground level. Separate drive air supply and exhaust tubes are connected to the cycling valve, the valve permitting the drive air supply line to communicate with a gas chamber of the pump during a pressurizing phase of the pump cycle, and alternately permitting the exhaust tube to communicate with the gas chamber of the pump during a venting phase of the pump cycle. A timing device for timing the sequence of the cycle phases is connected with the cycling valve. The timing device may be mounted adjacent the cycling valve, so that the pump, the cycling valve and the timing device may be lowered to the submerged operating position as a single unit.

Self-cycling pump apparatus and method

The present invention discloses a groundwater sampling kit which comprises a plurality of components capable of being assembled into several alternative groundwater sampling devices by hand without the use of tools, the components being securely packaged in an impact-resistant carrying case.

Growing community of inventors

Medina, NY, United States of America

William D Dickinson