Showing papers on "Cover (algebra) published in 1996"

Generating random spanning trees more quickly than the cover time

Abstract: It is widely known how to generate random spanning trees of an undirected graph. Broder showed how at FOCS [6], and Aldous too found the algorithm [2]. Start at any vertex and do a simple random walk on the graph. Each time a vertex is first encountered, mark the edge from which it was discovered. When all the vertices are discovered, the marked edges form a random spanning tree. This algorithm is easy to code up, has small running time constants, and has a nice proof that it generates trees with the right probabilities. This paper gives a new algorithm for generating random spanning trees. It too is simple, easy to code up, and has nice proofs. The new algorithm also has the following advantages:

Compact portable computer having a riser that forms when a cover is opened

Abstract: A portable computer capable of operating on a flat surface or on an operator's palm and forearm, including a main body, a display on an upper side of the main body for displaying image or character data or both, a cover which covers the display and opens rotatably to a position where an upper side of the cover touches a bottom side of the main body, a riser formed when the cover is opened which raises the main body to a position so to form an angle relative to the flat surface, when supported on the flat surface, and for stabilizing the computer when held by the operator on the operator's palm and forearm. The cover opens and closes with the assistance of first and second hinge pins. An edge portion of the cover and a stand plate extend in generally opposite directions about the first hinge pin when the cover is closed, but are adjacent to one another when the cover is opened. The stand plate is positioned adjacent to the main body when the cover is closed, but is positioned in an opposite direction about the second hinge pin from a holder when the cover is opened.

Screwless outlet box covering

Abstract: A thin decorative cover plate assembly for outlet boxes wherein the outer cover or face plate does not have screws.

Generalized models of design iteration using signal flow graphs

Abstract: Cover title. "An earlier form of this paper was presented at the 1995 ASME Conference on Design Theory and Methodology."

Improving Academic Performance Through Self-Management: Cover, Copy, and Compare:

Abstract: A practical, hands-on method teachers can use in spelling, math, and geography

Cosmetic compact having snap-on hinge

Abstract: A cosmetic compact formed by an open container having stored therein a facial powder, and a hinged cover to close the container, the cover having a mirror mounted on its inner wall which when the cover is swung open to assume a predetermined obtuse viewing angle, the user holding the compact can then observe her face while applying powder thereto. The hinge includes a pair of spaced gudgeons projecting from the rear wall of the container and bridged by a pivot pin, each gudgeon having formed on one side a stop positioned between the corresponding end of the pivot pin where it joins the gudgeon and the rear wall. At the rear of the cover at a right angle thereto is a pair of resilient jaws formed by parallel front and back plates which snap-fit into the space between the gudgeons to clamp onto the pin. When the cover is swung open to assume the predetermined obtuse angle with respect to the container, the leading edge of the front plate then abuts the stops and the cover is thereby maintained at this angle. But if the cover is forced beyond this angle, the hinge will not break, but the cover will snap off the pin and can thereafter be snapped back to restore the hinge.

Surface contact card connector

Abstract: A surface contact card connector which includes a base section 2 made of an insulating material; a cover section 3 made of an insulating material and attached to the base section at a rear end for rotation between open and close positions; first and second engaging side walls 7 and 15 provided on opposite sides of the base and cover sections, respectively, such that when the cover section is closed, they are opposed to each other; first or second engaging side walls are flexible laterally; engaging windows or depressions 9, 10 being provided in the first or second engaging side walls; engaging and releasing projections 16 and 17 provided on the second or first engaging side walls such that when the cover section is closed, they flex the first or second side walls laterally and engage the engaging members; the engaging projections having a rectangular triangle shape whose upper side 16A is substantially at right angles to the engaging side walls while the release projections being provided at positions flexible with respect to the engaging projections when the cover section is opened

Vented bowl and cover assembly

Abstract: A bowl cover assembly having a configuration which provides for secure interlocking between the bowl and cover with at least one opening for venting purposes along the rim of the cover when the cover is locked onto the bowl.

Document binder with cover pocket for custom title sheet

Abstract: A document binder is formed with front and back covers hinged together in articulated fashion with a spine located therebetween. An overlay is provided across the outer surface of at least the front cover and the spine and is secured by fusion to inner and outer, plastic cover sheets that encapsulate a flat, stiff, front cover core, spine, and back cover core therebetween. A front cover title sheet pocket is defined between the overlay and the outer, plastic cover sheet. The title sheet pocket is of a narrow enough width to readily accommodate title sheets printed on paper of standard width, such as eight and a half inches. The fabrication technique employed allows a title sheet pocket to be created for the front cover of the document binder which snugly confines the title sheet and prevents it from shifting laterally as occurs in conventional devices. The creation of title sheet pockets with this configuration is possible according to the method of the invention by first fusing together the overlay to the outer plastic cover sheet along a band of attachment near the demarcation between the front cover and the spine, and then fusing the overlay, outer cover sheet, and inner cover sheet together so as to encapsulate the nonfusible, flat, stiff core elements between the two cover sheets. An inside pocket sheet may also be fused to the inner cover sheet during the same step of fusion so as to form pockets on the insides of the front and back covers.

Airbag module cover

Abstract: An airbag module cover includes a cover member and an ornament on the cover member. A plurality of pins are connected to and extend from the ornament to pass through the cover member. A retainer is engaged with the pins and cooperates with the ornament to interpose therebetween a portion of the cover member.

Hail protective cover

Abstract: A cover for protecting vehicles or structures from the damaging impact of hailstones or other falling objects. The cover includes a plurality of energy-absorbing rods disposed parallel and closely adjacent to one another along their long dimensions. The rods are substantially circular in cross section and made of a resilient material. The rods are held in their relative positions by an enclosing means, which may be two flexible sheaths made of a textile. The first and second sheaths are fastened together between and along the long dimensions of the rods, and at the perimeters of the sheaths, so as to enclose and hold the rods, forming the assembled cover. This construction allows the cover to be rolled up for easy storage. The cover has fastening means, such as flanges for tie downs, for attaching the cover to a vehicle to be protected.

Container cover having a screen

Abstract: A cover for a container in which the container has a top, an outer lip, and a tab opener. The cover is a generally planar disc removably placed within a recessed area on the top within the lip. The disc has a screen covering the opening in the top for preventing objects from entering the can while allowing fluid to flow for drinking by a user. The cover further has a slot in which the tab extends partially through the slot such that the slot engages the tab preventing the cover from rotating upon the cover being subjected to external forces. Also, the cover has a notch at the edge of the disc for permitting easy removal of the cover from the container.

Enclosures and accessories for sport utility vehicles, vans, and minivans

Abstract: An apparatus for attaching an enclosure to the back of a motor vehicle which contains an integral plate, at least devices for attaching such plate to the motor vehicle, a cover, a device for attaching the cover to the integral plate, and a device for attaching the cover to the motor vehicle When the cover is attached to both the integral plate and to the motor vehicle, it encloses the space between the back section of such vehicle and such cover and forms a substantially waterproof enclosure covering the space

Hinged cover for an insulated beverage container

Abstract: This invention relates generally to a portable beverage container holder and cover. More specifically, the invention is a floatable, insulated, beverage container holder, having an external tubular foam shell, and a two-piece device, comprising a dome-shaped cover portion and an annular collar portion. Hinged means, comprising of a rod connected to two ear shaped upwardly extended projections, is integrally formed with the annular collar, enabling the dome-shape cover to pivot between a forwardly closing position and a backwardly open position. The collar includes a recess in the rear of the hinge for receiving a locking projection correspondingly disposed at the back of the dome shaped cover. A frictional engagement between these corresponding parts retains the cover in an upright locked position, when it is pivoted backward. Similarly, the cover is adapted to snap into a watertight seal when it pivots forwardly into a closed position.

Insulating cover for keg beer

Abstract: An insulating cover for keg beer. The cover consists of a relatively flexible insulating material which substantially surrounds one or more kegs of beer. In a first embodiment the cover closely conforms to a single keg of beer, and thus has a cylindrical shape. Handles are provided on the exterior of the cover for easier manual transport of the keg and cover combination. The insulative properties are sufficient to maintain a relatively constant cool temperature without the use of ice, although multiple-use sealed freeze packs may be placed within the cover. In a further embodiment the cover is sized to fit upon a pallet and enclose up to four kegs. A side wall and top of the cover is openable to remove one or more of the kegs.

Vehicle air-bag opening cover

Abstract: The cover for an opening in a vehicle dashboard or steering wheel hub, to shroud an airbag and be displaced when the airbag is inflated on an impact, is an injection moulded, cast or heat-shaped cover unit (1). One section of the mounting strip (2-4) is embedded in the cover (1), for mounting to the supporting body (5) and act as a hinge. The mounting strip (2-4) is a woven material of polyamide fibres with a polyester or polyethylene cladding. The supporting body (5) is of polypropylene or a fibre compound material with a matrix of carbon or glass fibres. Also claimed is the mfr. where the mounting strip (2-4) in the support body (5) and at least one mounting strap are embedded together in the same mould, esp. for a back injection action.

Eyeglass retainer and protective cover

Abstract: A combination eyeglass retainer and cover includes a cover portion (15, 30, 50, 70, 72) having an aperture (16, 32, 52) for selectively inserting and removing eyeglasses (10) from the cover A retainer (18, 20, 34, 35, 55) is attached to the eyeglasses (10) and to the cover A closure (23, 37, 38, 39, 60, 62) is provided that cooperates with the cover to selectively prevent removal of the eyeglasses from the cover when inserted therein The eyeglasses (10) can be placed in the cover (15, 30, 50, 70, 72) without detaching the retainer (18, 20, 34, 35, 55) from either the cover or the eyeglasses

Direct broadcast satellite antenna cover

Abstract: A cover for protecting a direct broadcast satellite antenna having a flange around the outside perimeter of the antenna. The cover is fabricated from a waterproof, flexible sheet material, such as marine grade vinyl. The cover is sized to have a margin extending approximately one-half of the width of the flange beyond the outside edge of the antenna. A "J clip" strip having one edge folded over in a "J" configuration and having a width approximately the same dimension as the flange of the antenna, is positioned along the outer face of the cover with the opposite edge of the strip aligned even with the edge of the cover. The strip is sewn or otherwise attached to the cover material to form the completed cover. A gap of approximately 6" can be provided along one portion of the perimeter of the cover to provide clearance for the supporting structure and ventilation to the inside of the antenna. As the "J" strip is installed on the flange of the antenna, it is continuously worked around the perimeter which causes the "J" strip to be folded back on the cover material with the edge of the strip contacting the surface of the flange and providing a leveraging effect to tighten the cover material and securely retain it across the face of the antenna.

Soft cover book and method of making same

Abstract: A soft cover, lay flat book in which a non-adherent, unreinforced coating of a volatile liquid carrier and powdered material is disposed over the glue along the backbone of the book block prior to the assembly of the cover, and the cover is adhered or otherwise secured to the book block only between the front and rear leaves and outer surface portions of the book block so that the backbone is movable independently of the spinal cover when the book is opened and closed. Alternately, the coating may be applied to the spinal portion of the cover and a laminate film affixed over the inner surface of the cover, again allowing independent movement of the backbone.

Replaceable outer cover for personal communication device

Abstract: A replaceable outer cover for a personal communication device having a permanent rigid inner cover, a front side with controls and a back side, said outer cover comprising a second rigid cover having inside dimensions configured to conform to the outside dimensions of said inner cover, said second cover formed to comprise a unitary structure with an open back side of sufficient size to permit insertion of said inner cover into said outer cover through said back side, said outer cover having at one end thereof a partial extension over said back side to receive and hold said inner cover in position and said outer cover having at the outer end of said back side at least one clasp to grasp and hold said inner cover in place at said other end.

Multi=pass flat=tube automotive heat=exchanger

Abstract: The heat exchanger is esp. for an evaporator. It is made of aluminium and has collector chambers (4), each with a bottom (6) and cover (8), connected to the passes (46,48) at the inlet and outlet. Intermediate chambers (16) are formed between adjacent passes (10), and where there are three or more of the latter, adjacent ones are connected by a deflector chamber (18).Only the bottom, cover, or a single wall of a collector chamber engages in an intermediate chamber (16). Where the bottom engages in the latter, it can have a free flange (20) extending beyond the flat tubes (2), and round, on or into which the cover fits. Where there are two adjacent collector chambers, only one cover can fit in the intermediate chamber. It is joined to the other cover outside the tubes. The deflector chamber can have a deflector plate joining onto the free flange of a collector-chamber bottom.