Abstract: A self-enclosable inflatable mattress has a mattress body, a valve and a bag. The mattress body has a sidewall and a chamber being defined in the mattress body. The valve is mounted through the mattress body. The bag is attached to the mattress body and has a surrounding sheet, at least one holding sheet and at least one fastener. The at least one holding sheet is mounted on a corresponding margin of the surrounding sheet and detachably connected to a corresponding surrounding sheet. The fastener is mounted between the surrounding sheet and the holding sheet. The self-enclosable inflatable mattress is easily stored compactly and prevents dust from contacting the mattress body during storage.

Abstract: An osmotic pump controlled release tablet and the preparation method thereof are disclosed. The osmotic pump controlled release tablet is composed of tablet core, semipermeable membrane and optional film coating. The material of said semipermeable membrane is composed of ethyl cellulose and povidone in the ratio of 1:1˜1:4 by weight. Said tablet core comprises drug containing layer and push layer. The osmotic pump controlled release tablet also characterizes in that; (1) the angle ?1 formed by the outer curved surface of the drug containing layer and the lateral surface is 120°-180°; and/or (2) the ratio of L1 to r is 0.27-1.0, wherein L1 is the vertical distance from the central vertex of the outer curved surface of the drug containing layer to the plane formed by the intersection line between the outer curved surface of the drug containing layer and the lateral surface, and r is the radius of the tablet core.

Abstract: A coating and devices using the coating are provided. The coating is applied in liquid form and dried or otherwise cured to form a durable adherent coating resistant to high temperatures and having optional hydrophobic properties. The coating formulation contains an aqueous formulation of silica, one or more fillers, and sufficient base, (e.g., potassium hydroxide), to have a pH exceeding about 10.5 during at least part of the formulation process. The formulation may contain a compound(s) that affects surface free energy, energy to make the cured coating hydrophobic. Such compounds include silanes containing halogens (e.g., fluorine or chlorine) and in particular silanes containing one or more hydrolyzable groups attached to at least one silicon atom and a group containing one or more halogens (e.g., chlorine or fluorine). A medical instrument (e.g., electrosurgical instrument) may be at least partially covered by a coating using the formulation.

Abstract: A chip package includes a conductive connection block connected to the conductive layer coated on the base and the two ends of the gold wire are respectively connected to the chip and the connection block. The connection block prevents lamination during packaging and ensures that the gold wire is firmly connected to the chip and the connection block.

Abstract: An inflatable product includes an inflatable body having an exterior wall defining at least one air chamber therein, at least one electrical air pump unit, an electrical switch connected electrically to the electrical air pump unit, and at least one controller. The controller is operable manually to activate the electrical air pump unit so as to perform a selected one of inflation, full deflation, and partial deflation of the air chamber in the inflatable body.

Abstract: A wrench includes a driving head, an axle hole formed at an end of the driving head, an accommodating portion disposed in the axle hole for accommodating pawls, a control ring contained in the axle hole and having an end extended out of the axle hole and coupled to a wrench handle, and a ratchet section and a smooth section defined on an external periphery of the control ring, and the ratchet section is provided for latching the pawls to define a fixed state of latching the wrench handle with the driving head and can be rotated into a secured status, and the smooth section is provided for pushing the pawls to release the fixed state of latching the control ring, so as to allow the wrench handle to be turned with respect to the driving head for a quick rotation.

Abstract: An inflatable bed includes a bedstead assembly, a mattress assembly, and an electrical air pump unit. The mattress assembly is disposed on and above the bedstead assembly, and includes a top sheet, a bottom sheet disposed under the top sheet, and a plurality of surrounding sheets interconnecting the top and bottom sheets to form a plurality of air chambers, which are not in fluid communication with each other. Each of the air chambers is defined among the top sheet, the bottom sheet, and a respective one of the surrounding sheets. The electrical air pump unit is disposed on the bedstead assembly, and is operable to inflate the air chambers individually so that air pressures in the air chambers may be different.

Abstract: An eccentric dual stepping gear roller bearing system, which consists of an input shaft and an output shaft associated with a gear ring holding an exterior row of equally spaced ball bearings, an output gear with an interior row of lesser diameter with fewer equally spaced ball bearings held at a different plane relative the exterior row, and at least one stepping gear with exterior and interior stepping gears having differing radii joined off-set on top of one another and eccentrically mounted on the drive shaft to act on the interior and exterior rows of roller bearings, which act as gear teeth to rotate the output gear to reduce shaft output.

Abstract: An inflating module adapted to an inflatable object includes an air pump assembly selectively operable to deflate and inflate the inflatable object and a supplemental air pressure providing device automatically activated to provide supplemental air pressure to the inflatable object when the air pressure of the inflatable object is down and below a predetermined level so as to maintain air pressure of the inflatable object in a predetermined range.

Abstract: There is provided a hole saw system comprising a hole saw including a bottom portion and a body portion; a mandrel, including apparatus for receiving the hole saw; wherein the hole saw includes a plurality of slot pairs, the slot pairs being offset from each other on the body portion allowing a tool to be inserted into one of the slot pairs for removal of a slug.

Abstract: An inflatable bed having a primary body, a backrest selectively inclinable relative to the primary body, a slit defined at a junction of the primary body and the backrest, and a pouch received in the slit to be selectively inflatable to move the backrest relative to the primary body. The slit is defined in a manner that when the pouch is inflated and the backrest is lifted by the pouch, friction of a bottom face of the backrest to a top face of ground where the inflatable bed is rested is minimized so as to facilitate the inclinable movement of the backrest relative to the primary body.

Abstract: A supplemental air pressure providing device adapted for use with an inflatable object includes an oscillator responsible for generating magnetic field and vibrating a casing, an air compressing device responsible for compressing air and noise silencer mounted inside the air compressing device for reducing noise generated while compressed air flows through the air compressing device for inflating the inflatable object.

Abstract: A wear resistant ceramic coated aluminum alloy article. The alloy preferably contains from about 85 to about 92 percent aluminum with a plurality of other oxidizable metals selected from copper, magnesium, zinc, and chromium. Less that about 2 percent total of other elements is usually present. In accordance with the invention, the alloy preferably contains less than 0.5 percent each of manganese, iron and silicon. An example of such an alloy is 7075 aluminum alloy. The article is made by a method including the steps of: a) immersing the article in an aqueous electrolyte containing from about 1.5 to about 2.5 grams per liter of alkali metal hydroxide and from about 6.5 to about 9.5 grams per liter of alkali metal silicate. In general no more than 1 g per liter of alkali metal pyrophosphate is present and no more than about 0.

Abstract: A quick-turn wrench includes a driving head with an axle hole. One side of the axle hole has a claw. A ratchet ring is accommodated in the axle hole. One end of the ratchet ring extends outside the axle hole and connects to a wrench handle. The ratchet ring is surrounded by a ratchet part that correspondingly engages the claw. A transmission rod is inserted into the ratchet ring, with one end having a transmission part. A bottom plate is disposed at the bottom of the axle hole. The end surface of the bottom plate facing the axle hole has a sliding groove. A pushing element is disposed in the sliding groove corresponding to the claw. The transmission part of the transmission rod connects to the pushing element. As the transmission rod rotates, the pushing element is driven to push the claw to release the fixing state between the claw and the ratchet ring.

Abstract: A tool has a distal operative portion and a proximal shank with a mounting portion, for mounting the tool in a holder. A substantial portion of the mounting portion has a cross-sectional shape with at least one and fewer than six 60-degree segments thereof having segment ends joined by a flat surface. The holder has a distal axial aperture or mounting hole for receiving the tool, the aperture having a cross-sectional shape which has 60-degree segments thereof having segment ends joined by a flat surface, but no more such flat surface segments than those corresponding to flat surface segments of the tool. The holder further has a ball-detent mechanism or other locking mechanism for engaging the mounting portion of the tool.

Abstract: Controller for an all terrain or utility vehicle for automatically raising and lowering an implement to a pre-selected position using an electric winch. The winch is turned for a predetermined time during with the winch is turned, and based on the selected lowered position and the predetermined time the winch may be raised to the same height, denoting a raised position. Based on that predetermined time, a second predetermined time may be determined to run the winch in the opposite direction, with the time corresponding to the amount of time required the snow plow to the selected lowered position. The time to lower the plow may tend to be less than the time required to raise the plow due to the effect of gravity. The controller may raise or lower the plow after the transmission has been set from neutral to reverse or forward, respectively.