摘要:
Precision cleaning compositions for electronic and electrical components comprise at least one halogenated, saturated or unsaturated hydrocarbon other than cis-1,2-dichloroethylene; at least one fluorinated saturated or unsaturated hydrocarbon having the formula CnHmFp, wherein 3≦n≦6, 0≦m≦9 and p≧5; at least one fluorinated saturated or unsaturated ether having the formula CaHbOcFd, wherein 3≦a≦6, 0≦b≦9, c≧1, and d≧5; methylal; at least one simple alcohol; and optionally at least one propellant. In a preferred embodiment, the composition comprises trans-1,2-dichloroethylene, methylal, methyl nonafluorobutyl ether, ethyl nonafluoroisobutyl ether and carbon dioxide. The cleaning compositions are environmentally friendly (non-ozone depleting), are strong enough to tackle tough soils yet mild enough for use on plastic components, are non-flammable, have no flash point, and leave no residue on the substrate.
摘要:
A void former for positioning an anchor within a concrete structure is comprised of a hollow polymeric body having first and second sections hinged together for movement between a closed condition engageable around the anchor received therebetween and an open condition in which the sections are separated at the lower portions thereof to release the anchor received therebetween. The void former is monolithically formed by injection molding and includes integrally formed latch elements on the respective sections for mutual engagement to secure the sections in the closed condition and a bridge between the sections to provide a hinged connection therebetween. In the injection molding process the sections are formed so as to be positioned in the open condition. Upon removal from the injection mold, the sections are hinged relative to one another by bending the bridge therebetween, before the polymer is fully cured. Such bending aligns the molecules of the polymeric material within the bridge to enable the bridge to serve as a hinge and sustain repeated bending.
摘要:
Impact suppression devices having energy absorbing capability. The devices utilize a spline configuration for two separate shafts that are movably joined such that one can move axially inside the other. The shafts themselves can act as a piston, or a piston is used as part of the components. Impact absorption is provided by a gel layer or gel layers that have hydraulic fluid properties when a force is applied to them.
摘要:
A weathercasting system for displaying dynamic real time photo-realistic three-dimensional pictorial representations of weather conditions created from meteorological data combined with geographical and topographical data. Geographical and topographical data is retrieved, digitized, and processed to produce a simulated three-dimensional volumetric image and stored in memory for later retrieval. Meteorological data including precipitation, cloud cover data, the bottom and top of cloud formations, and reflectivity and velocity of rain droplets in real-time are acquired from C-band and/or K-band Doppler radar, or non-Doppler K-band and Doppler X-band radar installations which ameliorate S-band radar data and the data is digitized and processed to produce a simulated three-dimensional image of the meteorological data. The meteorological data is combined with the geographical and topographical data to produce a digital signal capable of being transmitted to a computer, displayed on a computer display screen, and manipulated by peripheral devices connected with the computer. The combined data is displayed as a photo-realistic three-dimensional pictorial representation of weather conditions from a selective observation point and relative to a selective geographical area. The pictorial representation can be manipulated to give the visual effect of moving through a weather system to allow the viewer to visualize the effects of the weather system at various geographical locations.
摘要:
A combination aquarium heater and cooler apparatus is provided which utilizes a feedback circuit to automatically maintain the fluid in an ecosystem at an operator set desired temperature. The feedback system scheme takes advantage of a thermo-electric heat pump component in combination with a high gain amplifier in order to achieve the desired result of maintaining the ecosystem at a temperature which is nearly constant regardless of other undesirable spurious heat inputs or losses to the ecosystem.
摘要:
A board game for simulating a white-water rafting course wherein two or more players attempt to be the first to reach the finish line. A game board is utilized that depicts a white water stream divided into a plurality of spaces with game pieces in the form of rafts being moved along the spaces according to the roll of a single die. Various spaces on the course have instructions for further action by the player and include picking a card from a deck of pick cards with additional instructions. A three-dimensional HO scale railroad segment and flat car serve as the launch mechanism for each game piece. Each player selects a flag representing the nation of his choice for the race and installs this flag on his raft game piece prior to launch thereof. Hazards on the white-water cource include a three-dimensional drawbridge that must be manually opened by each player and a three-dimensional portage route that may be traversed, depending upon the roll of the die.
摘要:
A system which combines a video tape recorder with a computer in such a manner that these two components each automatically record and display where related information is stored in its own mechanism as well as in its counterpart mechanism. This allows the user to determine the location of all the corresponding data stored both on video tape and on diskette, by examining only one storage medium.
摘要:
A device for separately storing multiple mixable components prior to use and allowing for, at a subsequent date, their mixing. The device or system being ideally suited for dispensing whip cream in flavors and corresponding colors or epoxy and hardener. The device has two separate containers from which metered proportions are mixed when needed.
摘要:
A jogger speedometer and odometer device adapted to travel over a surface while secured to a jogger's body, is provided and consists of a wheel rotateably connected by a shaft between the bifurcations of a forked. The wheel is mechanically connected to an indicator unit attached to a handle that is attached to a flexible shaft. The wheel activates the indicator unit through the flexible shaft in accordance with the relative movement between the wheel and the surface.
摘要:
A method of laying bricks in order to lay a large brick surface; including one or several bricklayers working independently in separate areas, the brick laying at each area including an initial laying of a pointed, wedge-shaped brick with progressively thicker, wedge-shaped bricks adjacent thereto in a row, until attaining a standard brick width, after which all other rows of bricks adjacent to the tapered row of brick thus formed, are made of standard, same width brick; the brick rows of all areas being joined together, so as to form the large brick surface.