Abstract:
A thermoplastic multi-layer composite structure is disclosed and consists in a first embodiment of a co-extruded acrylic polypropylene outer skin and high melt strength polypropylene substrate which is attached to a first surface of a polypropylene foam core. An inner polypropylene skin can be provided and is attached to a second surface of the foam core. The foam core can either be constructed from an expanded polypropylene or an extruded polypropylene. Where an expanded polypropylene foam core is provided, the foam core is attached to the outer and inner skin through the use of a polypropylene adhesive. Where the extruded polypropylene foam core is provided, the skins can be attached to the foam core through a welding or bonding process in lieu of adhesives. The polypropylene adhesives can also be utilized for attaching the skins to the extruded foam core. Additionally, the extruded foam core can vary in density to provide a composite foam core. Preferably, the various densities of the composite foam core are arranged such that the lowest density foam is provided at the center of the core and the varying densities of the foam core extend outward from the center in numerical order.
Abstract:
A marine propulsion unit (10) has a depending gearcase (12) with one or more water inlet openings (22) in the sides of the gearcase for supplying water to a water pump (20), and an auxiliary water inlet opening (32) at an anti-ventilation plate (30) above the propeller (14) for supplying additional water to the water pump (20). The water passage (42, 50) from the auxiliary water inlet opening (32) to the water pump (20) has a portion (44, 52) extending downwardly below the level of the auxiliary water inlet opening (32) and communicating with the side water inlet openings (22). When the side water inlet openings (22) are below the water line and the auxiliary water inlet (32) is above the water line, water is received in the downwardly extending portion (44, 52) of the second passage (42, 50) and blocks air from flowing from the auxiliary inlet opening (32) to the water pump (20), to prevent engine overheating.
Abstract:
Apparatus and methods for detecting an incipient fire condition based on a shift in the size distribution of particles generated by a developing incipient fire condition. Particulate mass concentrations of at least two different particulate sizes are monitored and the ratio of the outputs from the sensing devices (22, 24) is processed as an indication of an incipient fire condition. In another form of the invention, the rate of change of the ratio of the outputs from the monitoring devices (22a, 24a) is processed as an indication of an incipient fire condition.
Abstract:
A combination incline exercise machine (100) includes a base structure (102) that defines an exercise position (116). A lever (154, 254) is provided on the base structure (102) for pivotal movement about an axis (150, 250). The axis (150, 250) is located between opposite end portions of the lever (154, 254). A handle (164, 264) is associated with the lever (154, 254) so as to be engaged by an exerciser to move the handle (164, 254) about the axis (150, 250) in an upward direction to a raised position and in a downward direction toward to a lowered position. A first connector (159, 259) is provided on one end portion of the lever (154, 254) to apply selectively a first resistance against movement of the handle (164, 264) in the upward direction. A second connector (158, 258) is provided on the opposite end portion of the lever (154, 254) to apply selectively a second resistance against movement of the handle (164, 264) in the download direction.
Abstract:
A fuel line cooler (34) is provided for a marine propulsion system (2) having a water cooled internal combustion engine (4) in a heat retentive compartment (5). The fuel line cooler (34) has an inlet (36) in communication with the source (14, 12) of cooling water for the engine (4), and has an outlet (38) for discharging water. The fuel line cooler (34) is cooled by sea water during running of the engine (4). Upon turn off of the engine (4), the cooled water in the fuel line cooler (34) is in heat transfer relation with the fuel and prevents vaporization and/or spewing of the fuel.
Abstract:
Interpreted intake-manifold vacuum and engine speed are used to produce an electrical output signal that reflects throttle position. Since the device has no mechanical tie to the throttle, there is none of the hysteresis or mechanical wear that are characteristic of conventional throttle-position sensors. The device comprises a tachometer circuit which is modulated by the signal from a differential-pressure transducer, connected to track the instantaneous hydraulic pressure drop across the engine throttle. The tachometer output controls the duty cycle of a pulse generator which , in turn, drives an ouput transistor; a reference potential is applied across the load resistor and emitter of this output transistor, and the output signal is obtained as a d-c control signal, upon filtering the signal from the collector of the output transducer. The transfer function of the device yields maximum output when there is little or no intake vacuum, e.g., at sustained high speed, and minimum output is obtained from minimum speed and maximum vacuum.
Abstract:
Golf club shaft (1, 2, 3) tapered in a step pattern and having a high deflection point. The grip area (2) has a smaller diameter than the adjacent steps of the taper section (1) of the shaft.
Abstract:
A marine trolling propulsion system (2) has a lower submerged housing (4) including an electric motor (5) driving a propeller (6) through a reducing traction drive provided by rolling contact of three balls (57-59) between split inner races (36 and 38) and an outer race (60) to drive a transfer member (68) which rotates the propeller (6). The inner race halves (36 and 38) are axially loaded by Belleville washers (72) providing constant axial force with axial deflection, and a limited maximum loading force capability to intentionally provide overload slip protection. The inner race halves (36 and 38) are keyed to the intermediate floating shaft (14) on raised hexagonal shoulders (32 and 34) permitting rocking of the inner race halves (36 and 38) and self-seating and alignement of the inner race halves to the balls (57-59). Couplers (16 and 124) are provided between the electric motor shaft (12) and an intermediate floating axial shaft (14) and between the transfer member (68) and the propeller shaft (70) which enable different axes of rotation to accommodate manufacturing variations. The transfer member (68) is also coupled to the propeller shaft (70) by structure (118, 126, 128) enabling the transfer member (68) to rock about the center of the propeller shaft (70) such that propeller thrust is transmitted equally to the balls (57-59).
Abstract:
A low twist, high bulk filtration roving is prepared by wrapping a sliver comprised of individual fibers, around a core in the conventional manner. Exemplary of the bulk fibers which may be employed are naturally occurring fibers such as jute, cotton, animal hair; synthetic polymer fibers, such as acrylic, nylon, polyester, olefin, aramid, teflon; man-made organic fibers deriving from natural sources such as rayon or cellulose acetate; and inorganic fibers such as metal, glass, graphite; or a blend of two or more of these fibers. Examples of the core, which can be continuous filaments, monofilaments or spun yarn, are one or more strands of the same composition as the fibers, or a combination thereof, twisted paper which can be plain, impregnated or metallized, and metal wire. Where the material is capable of being cast in film form, slit film may be employed as the strand(s). The composite roving is wound upon a rigid perforated tubular center to form a filter cartridge.
Abstract:
PROBLEM TO BE SOLVED: To provide a SOD casting method and filling material for casting a low-solid piece alloy having 10-30%. SOLUTION: This invention is related to the SOD (slurry on demand) for casting the 10-30% of solid-piece alloy. The alloy is heated to a molten alloy state and for condensing and producing a partial solid phase of the low solid piece, the alloy is cooled and stirred, and in the interval in which the partial solid phase of the low solid piece exists, the alloy is shifted to a casting machine. COPYRIGHT: (C)2008,JPO&INPIT