Dry descaling of steel strip by a combination of thermal and mechanical treatments. A strip of steel is heated in normal furnace atmosphere to a temperature at which the magnetite scale converts to softer, more porous wustite and then rapidly cooled by air jets. Subsequently, the cooled strip is flexed to crack the scale and abrasive blasted to remove the cracked scale.

A bonding tip and method is disclosed for making an extremely strong tailless wire bond on a contact pad of a semiconductor device without significantly reducing the connected unbonded wire cross-section immediately adjacent the bond. One form of the tool includes an elongated member having a flat bonding surface on one end and a pair of oppositely disposed grooves which intersect opposite edges of said bonding surface. The connected unbonded wire adjacent a final bond of an interconnection is a...

A syringe assembly utilizes a one way valve which comprises a compliant plate portion adapted to partition a syringe barrel. The compliant plate portion moves in response to pressures developed within the syringe barrel and the valve includes a brace portion which limits compliance of the plate portion to pressures exerted in a given direction. Due to compliance by the plate portion, fluid can flow within the syringe barrel and around the plate portion when the pressure acting on the fluid is in...

The amount and quality of an electroplated deposit on articles having various areas to be plated are controlled by controlling the current density to one article, and applying a voltage to the remaining articles to be plated for the same time, the voltage applied being determined by the voltage developed at the surface of the first article, and thereby resulting in a controllable current density to the remaining articles.

A sealed container has a closure which includes a label attached to an outturned flange of the container by a peripheral band of pressure sensitive adhesive on the label such that the label is adapted to be peeled back at one of its corners to dispense articles one at a time from the container and to be then pressed back into place until another article is to be dispensed, the closure being produced by a method which uses a backing sheet to present a path attached to the label by such adhesive a...

Workpieces are finished in a vibratory or tumbling finishing apparatus by means of chips containing abrasive grains in an ice matrix. During finishing, a hydrocarbon-based liquid refrigerant chilled below the melting temperature of the ice matrix is circulated through a vibrating admixture of workpieces and chips.

A method of and an apparatus for cancelling second harmonics in electrical signals resulting from nonlinear devices within electrical networks. The signal applied to the network includes not only the fundamental frequency of interest, but also a component at a frequency equal to the third harmonic of that fundamental frequency. If a nonlinear device is included in the network, energy at new frequencies is generated including components at the frequency of the second harmonic of the fundamental f...

A method of sterilization consists of introducing the items to be sterilized and a sterilant into an enclosure made at least partially of a semipermeable membrane and thereafter sealing the enclosure. The sterilant in the enclosure is passed to the surrounding atmosphere through the semipermeable membrane at a rate which maintains a concentration of the sterilant in the enclosure long enough to sterilize the items and at a rate in which neither harmful nor dangerous levels of the sterilant are r...

A method of machine knitting a one-piece blank for making up into a garment; sleeve-portions of the blank are joined at their ends to at least one body portion and the joined parts are knitted with the same yarn whereas the parts of the sleeve and body portions which are separated from one another are knitted independently.

A process for drycleaning fabrics such as garments and other drycleanable materials, particularly highly soiled garments, by using hydrocarbon and chlorinated hydrocarbon solvents. The process includes a plurality of phases in a cleaning cycle wherein soiled garments are agitated in drycleaning solvent in each of the phases by mixing the solvent of a first phase with a detergent having a substantivity for the garments, removing the solvent of the first phase from the garments while the detergent...