Abstract: A low-cost crimping tool is provided for crimping non-metallic tubing such as PEX tubing connections. The tool includes two primary pieces which fit together forming an integral pivot without being pinned together about which the tool may be closed with pliers to form a secure tubing connection.

Abstract: A pet porch for placement in a casement or conventional double-hung window, allowing an indoor pet to access the outdoors safely. The porch has adjustable windows that can be set in a variety of positions for ventilation, yet closed when necessary. Closure can be effected by remote command, so that absentee owners can be sure the porch is closed for bad weather.

Abstract: A system is provided for the holding of a membrane in tension, that system having: a frame; a plurality of frame members with longitudinal anchoring channels, the channels having first and second channel flanges. Also provided is a retention strip disposed upon at least a part of the periphery of the membrane, wherein the retention strip engages the first and second channel flanges.

Abstract: A system and method for state space control of solenoids, particularly engine valve solenoids with two latching positions. A collection of trajectories are computed or measured, having low-impact landings with latching from different initial energies. The trajectories define flux linkage and electric current functions of the two variables, position and velocity. These tracking functions define future projections based on present inputs. In operation, the controller monitors position, velocity, flux linkage, and current, uses the functions to compute future current and flux linkage, and adjusts the drive voltage to hit the future flux linkage target, causing the system to track a precomputed trajectory to successful landing. An array of tracking functions incorporates varying valve flow influences and corrective actuation. Drift from a precomputed trajectory indicates an unanticipated valve flow influence and a new tracking function selection, leading to course corrections anticipating flow influences.

Abstract: A materials characterization method models dynamic, non-linear, temperature-dependent stress, strain, hysteresis, creep, and loss of elasticity at high strain, both in test samples and in Finite Element Analysis (FEA). Incorporating universal properties of statistical mechanics and adapting domain models from ferromagnetics to the higher-dimensional realm of stress tensors, the model is applicable to polymers, rubbers, liquids, and metals in elastic and plastic deformation. The model quantifies the dynamics of both plastic and brittle failure. Apparatus and methods are shown for testing material samples and matching the computational model to sample characteristics, leading to a set of characterizing parameters and predictive simulations using those parameters. Though apparatus and testing protocols of the invention yield optimum characterizations, pre-existing data from conventional testing yield useful results.

Abstract: An improved coupon sales promotion system applies the flexibility of computerized printing to the convenience of coupon sales offers to provide a recipient with coupons of unique relevance and with a cross-referenced map to facilitate use of such coupons.

Abstract: An auditory feedback device is provided for singers or the hearing-impaired to better hear their own voice. The device uses sound guides with reflective surfaces shaped to reflect sounds from the user's mouth to the user's ear.

Abstract: A drying rack for placement over a baseboard heater provides convenient shelves for drying a variety of objects. The rack is provided with supports adapted to fit over and behind the baseboard heater.