Abstract: A noninvasive security device for detection of blocked fluid flow within a conduit includes clamping body that may be affixed to the conduit and a safety overflow circuit mounted to the clamping body. The safety overflow circuit includes first and second sensor pads that act as the metal plates of a capacitor. The sensor pads are connected to the clamping body and positioned proximate the conduit to measure the capacitance within the conduit. The capacitance will be low when water is freely flowing through the conduit, since the dielectric constant will be similar to that of air. However, when the water level increases in the conduit, the dielectric constant will increase as will the capacitance, such that a pulse signal is generated to notify the user of the occlusion and to further disable the source of the water to the conduit.

Abstract: A two-piece plastic equipment pad with a top portion and an identical bottom portion. Each portion has a base with an underlying grid structure comprising cells formed by perpendicular ribs. The top portion and the bottom portion are aligned and connected together by connector strips that slots formed in the perpendicular ribs of the grid structure of the top portion and the bottom portion.

Abstract: A pressure gauge for determining refrigerant pressure and the saturated vapor equivalent temperature for a refrigerant in an HVAC system. The pressure gauge employs a bourdon tube with at least one attached strain gauge to sense the refrigerant pressure and produce an electronic pressure signal. The electronic pressure signal from the output of the strain gauge is attached to a microprocessor, which calculates and displays the refrigerant pressure, the saturated vapor equivalent temperature for a variety of refrigerants, and produces instantaneous and time lapsed representations of those parameters.

Abstract: A safety switch for sensing the level of water in a condensate pan has a molded plastic body with an attachment section and a float probe. The attachment section includes a collar that fits over and connects to the side edge of the condensate pan. The float probe comprises a hollow elongated housing with a grille opening to allow entry of water. A float, position within the hollow elongated housing, moves in response to entry of water into the elongated housing. The float includes a magnet that activates a reed switch mounted in a watertight compartment extending along one wall of the elongated housing. The float probe may be fixedly or adjustably attached to the molded body of the safety switch. For adjustable attachment, the float probe is snugly fit into the opening of a yoke so that the float probe can be raised or lowered or inclined with respect to the yoke.

Abstract: A pressure gauge for determining refrigerant pressure and refrigerant saturated vapor equivalent temperature for a refrigerant in an HVAC system.

Abstract: A process for covering a rigid, penetrable core article with covering material and automatically tucking the material into a surface of the article with an automatically reciprocating plunger.

Abstract: A process for covering at least a portion of an article with covering material, applying a wet material composition between the cover material and a core material of the article, and de-watering the wet material to form a reinforcing layer.

Abstract: A motor starting device employs a relay to connect and disconnect an auxiliary start capacitor in parallel with the existing start capacitor of a single-phase split-capacitor induction motor. The relay is normally closed and in the initial state connects the auxiliary start capacitor in parallel with the existing start capacitor. After a source of alternating current voltage is connected to the motor, a control circuit energizes the relay to disconnect the auxiliary start capacitor after a delay time. When the source of alternating current voltage is disconnected from the motor, a relay protection circuit maintains the relay switch open until the charge has dissipated from both the existing start capacitor and the auxiliary start capacitor.

Abstract: The present invention provides a method for automatically covering an article with covering material and automatically tucking the material into a surface of the article.

Abstract: The present invention provides a reinforced article with an injected inner reinforcing mixture layer deposited between a covering material and a core material.

Abstract: A system for utilizing a hazardous apparatus with a pad of fibrous fabric embedded in cement to shield a protectable surface from hazards produced by the hazardous apparatus.

Abstract: An AC disconnect switch having a first embodiment with an enclosure with portions of its side walls removed for easier access. The first embodiment of the AC disconnect switch also has a cover that is hinged at the top of the case and opens at an angle greater than 180 degrees to further enhance access. In a second embodiment, the cover is reversibly hinged on the side of the case of the enclosure for enhance access. Both embodiments of the AC disconnect switch have the terminal lugs with roughened surfaces on the terminal block aligned in the transverse direction of the enclosure to accommodate precut and prestripped wiring harnesses. The terminal block is mounted to the case by a tab arrangement which requires only a single screw. The AC disconnect switch also has a locking mechanism with retractable hasp to minimize shipping volume.

Abstract: A motor start capacitor assembly for providing an enclosure for a motor start capacitor and a thermistor electrically connected in series. The enclosure is constructed of a low temperature plastic case and cap with a high temperature plastic core for supporting the thermistor within the low temperature plastic case. The core holds the thermistor in a longitudinal orientation. The core and thermistor and related contacts are assembled without rivets or other fasteners.

Abstract: The present invention relates to a low-weight, high-strength composite pad, and a method of making the same. The composite pad has a substantially rigid board and at least one reinforcing coating on one or more sides of the board. The reinforcing coating has a foamable material with a fibrous fabric bonded thereto. At least one layer of a slurry mixture then covers the reinforcing coating. Also generally described, the method of making the present invention involves forming in a mold a reinforced core of the substantially rigid board, the foamable material, and the fibrous fabric, removing the reinforced core from the mold, and then applying the layer of slurry mixture thereto.

Abstract: A base for equipment, including a pad having a top surface, a plurality of side surfaces, and a core with a bottom side. The core has at least one recess in its bottom side. At least one removable insert foot mates with the at least one core recess such that the insert foot extends beyond the bottom side of the core. Similarly, rather than using a pad with a core, the pad is hollow with a top surface, a bottom surface, and a plurality of side surfaces. The bottom surface has at least one recess therein for mating with at least one removable insert foot. Likewise, the pad can have a top, a bottom, and a plurality of side surfaces with the bottom surface having a plurality of supports ribs extending therefrom. A removable pallet insert or a plurality of removable pallet sleds with a plurality of feet mate with the ribs on the bottom surface such that the feet extend beyond the bottom surface of said pad.

Abstract: A low cost, lightweight, high strength, long lasting, crack resistant, monolithically formed composite structural material and the method of making the same in which the composite consists of a core constructed from lightweight, granulated scrap or waste plastic bonded together with a relatively inexpensive cementitious slurry binder. The core is covered on one or more of its surfaces with a high strength outer layer constructed of layers of non-woven fabric material impregnated with a cementitious slurry binder having a different formulation than the core cementitious slurry binder to effectively bond with the fibers in the layers of non-woven fabric material to form a three-dimensional reinforcement matrix for the outer layer cementitious slurry binder.

Abstract: A low cost, lightweight, high strength, long lasting, crack resistant, monolithically formed composite structural material and the method of making the same in which the composite consists of a core constructed from lightweight, granulated scrap or waste plastic bonded together with a cementitious slurry binder. The core is covered on one or more of its sides with a high strength outer layer constructed of layers of non-woven fabric material impregnated with the same cementitous slurry binder with the fibers in the layers of non-woven fabric material forming a three-dimensional reinforcement matrix for the cementitous slurry. The composite of the core and covering is co-formed and cured monolithically with the cementitious slurry being continuous throughout the fibers of the layers of non-woven fabric and the core with the lightweight scrap or waste plastic serving as an aggregate for the core. The composite structural material can be molded or formed in various shapes and configurations for various purposes.

Abstract: A roof walkway panel particularly for use on single ply membrane roofs provides maximum resistance to wear, avoids cutting the membrane and the necessity for reinforcing the membrane, provides a sufficienty high profile, and allows substantial edge-to-edge abutment of adjacent walkway panels. The walkway panel includes an upper concrete wear section and a bottom bonded synthetic foam pad providing resiliency, protection for the roof membrane without bonding and ready portability for the walkway panel.

Abstract: An expanded foam core such as a polystyrene foam board is covered on only its sides and top with a fiberglass reinforced cementitious material to form a solid base. Heavy steel coils can be embedded in the composite for receiving steel posts which serve to mount air conditioners or the like. Alternatively, a recess can be formed in the composition for use as a transformer pad.