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Patent # Description
US-4,831,721 Mounting head exchange arrangement for part mounting machine
A mounting head exchange apparatus for a part mounting machine includes a moving unit as a part mounting portion for mounting parts onto a circuit board and the...
US-4,831,720 Heat exchange tube insertion tool
A system is provided for easily replacing a single tube in shell and tube heat exchangers without removing the bundle. The system comprises: (1) a rod which is...
US-4,831,719 Manufacturing method of a keyboard
A method for producing keyboards by which the majority of manual labor can be omitted, and which primarily includes the following steps: molding keys from an...
US-4,831,718 Process for laminating plate packs, in particular transformer cores
Positioning of the individual portions is no longer effected on the laminating station but on a positioning station which is arranged upstream of the laminating...
US-4,831,717 Commutator alignment fixture
A commutator alignment fixture includes a cylindrical bore having a plurality of axial circumferentially spaced blades extending inward from a side wall thereof....
US-4,831,716 Inserting insulating material into electric motor stators
A machine for forming electric motor stator insulating material and inserting it vertically directly into the stator placed on the pallet of a transportation...
US-4,831,715 Method and apparatus for positioning intermediate insulators in cores
A coil placing machine having an improved operating sequence for positioning coil separating insulators in certain core slots is disclosed. The insulators are...
US-4,831,714 Tool changing device for program-controlled universal milling and drilling machines
A tool changing device for program-controlled universal milling and drilling machines as well as machining centers. The device comprises at least one gripper...
US-4,831,713 Arrangement for removing wrapping wire from bales
An arrangement for removing and separating into pieces wrapping wire (3) encircling a bale (2) or like package in individual, closed loops includes a first wire...
US-4,831,712 Method for manufacturing siamese-type cylinder block and apparatus for casting blank for such cylinder block
A method for manufacturing a siamese-type cylinder block, which comprises the steps of pouring under pressure a molten metal of aluminum alloy into a...
US-4,831,711 Method for joining thin plates stacked on one another
Method and apparatus for fastening thin plates (4, 5) overlying one another, via a fastening element formed from the material, which element is obtained by...
US-4,831,710 Method of assembling a vehicle door
The vehicle door construction contains an inner door panel and an outer door panel with a skeleton juxtaposed by the inner and outer door panels and mounted with...
US-4,831,709 Method of an apparatus for removing coupling elements from a slide fastener stringer tape
Each of coupling elements mounted on a slide fastener stringer tape has a coupling head and two legs extending from the coupling head and mounted astride of a...
US-4,831,708 Method for producing a clad plate by hot rolling
In a method for producing a clad plate by rolling an improvement comprises: a base material, a cladding material, and a cover material overlaid one on another to...
US-4,831,707 Method of preparing metal matrix composite materials using metallo-organic solutions for fiber pre-treatment
Glass or ceramic fibers or other fibers such as graphite properly protected by a suitable adherent ceramic or metal coating are immersed in a liquid ...
US-4,831,706 Method of making spiral staircases
A method of constructing a spiral staircase to the specifications of an architect comprising the steps of taking a plurality of flat rectangular sheets of metal...
US-4,831,705 Method of manufacturing a sheet metal poly-V pulley
A method of manufacturing a sheet metal poly-V pulley including forming a tubular peripheral wall integrally from the peripheral edge of bottom wall and forming...
US-4,831,704 Apparatus for connecting thin plates
An apparatus for connecting stacked thin plates 4, 5 (in particular sheet-metal plates) or plate sections, according to which stacked flat parts 10, 11 of both...
US-4,831,703 Apparatus and method for plugging a tube
Both an apparatus and method for plugging a conduit, such as a tube in the tubesheet of a nuclear steam generator, is disclosed herein. The plugging apparatus...
US-4,831,702 Method for fixing boiler tubes during replacement of same
A method and apparatus for facilitating removal of spent tubes from boilers or heat exchangers in environments where access to one side of the wall through which...
US-4,831,701 Method of making a corrosion resistant aluminum heat exchanger using a particulate flux
A method of treating a heat exchanger made of aluminum or an aluminum alloy comprising applying onto the surface of the aluminum heat exchanger a noncorrosive...
US-4,831,700 Method for making a fuel injector
The airblast fuel injector capable of accommodating high fuel temperature at the injector tip without deleterious fuel vaporization problems and resultant...
US-4,831,699 Process for making curved walls starting with a flat prefabricated panel formed from three-dimensional metal...
A flat prefabricated panel formed from a three-dimensional metal screen and from a reference layer of foamed plastic is converted into a curved panel suitable...
US-4,831,698 Method of attaching a female element to a panel
A method of attaching a female element having an annular riveting portion to a panel and the installation apparatus. The method includes driving a punch through...
US-4,831,697 Method of making integrally foam-molded seats
In a method of making an integrally foam-molded seat by disposing a surface cover in a molding cavity of a mold used for molding a polyurethane foam and having a...
US-4,831,696 Component insertion machine apparatus
Apparatus for loading components into a component insertion machine. The apparatus comprises structure releasably mounted on component magazine loading apparatus...
US-4,831,695 Apparatus for the production of short warps especially for cloth designs in multicolor weaving
A winding drum particularly adapted for the production of short warps, such as cloth designs in multicolor weaving, which includes a winding drum having an...
US-4,831,694 Buckle having external finger grip
A side-release type buckle is provided with a sliding member arrangement that enables the buckle to be easily released using only one hand, even if the...
US-4,831,693 Clamp for sheet material articles
The clamp comprises an inverted U-shaped base having spaced apart legs defining an entrance with a clamping element mounted on one leg of the base for...
US-4,831,692 Hook for releasably attaching to at least one end
Hook adapted to be easily, quickly and securely attachable on both ends of an elastic cord which is used to tie objects up is disclosed; the present hook is...
US-4,831,691 Compact carding apparatus with sliver thread-up and method
A compact carding apparatus is disclosed which includes a pair of upstanding carding cylinders (B) and (C) carried in a self-standing manner on a base frame...
US-4,831,690 Carrying handle having L-shaped members each including a foot portion engageable with corrugated cardboard
A handle for attachment to a carton to facilitate carrying the carton. The elongated handle has the upper end of the leg portion of each of two L-shaped members...
US-4,831,689 Vertically slidably mounted brake for a resiliently supported caster wheel
A wheel fixing device for a wheel assembly of a baby carriage including: a hollow shaft element at the extream end of the shaft; a rotatable seat rotatable with respect to...
US-4,831,688 Door stop
A mechanism which prevents a door from closing by blocking the door hinge from closing.
US-4,831,687 Door closer with a concealed mounting
A door closer includes a plate-shaped mounting bracket and a closer body. The bracket is secured to a door. The closer body is secured detachably to the bracket...
US-4,831,686 Vacuum cleaning tool
A combined vacuum cleaning tool comprises two mutually movable parts, such as a flat surface nozzle (12) and a brush nozzle (10) which are alternatively...
US-4,831,685 Wet and dry vacuum cleaner
A filter, separator and seal arrangement is disclosed for a wet and dry hand held vacuum cleaner. A cup-shaped filter is provided which is elongated to provide a...
US-4,831,684 Cleaning vehicles
A self-propelled sweeper vehicle (10) has front steerable wheels (16) mounted on a centrally pivoted axle assembly (28) which also carries the nozzle (30) and...
US-4,831,683 Vacuum cleaner
There is disclosed herein an upright vacuum cleaner comprising a main body having a suction opening, and a handle body pivotally attached to the main body. A...
US-4,831,682 Protective cover for floor treating machine
A protective cover for a vacuum cleaner or other floor treating machine to prevent marring furniture, base boards, and any other object or fixture likely to come...
US-4,831,681 Sponge supporting device with guide rod springs
A device for supporting a sponge has a container filled with liquid, a sponge supporting plate in the container, and a resilient member urging the supporting...
US-4,831,680 Windshield wiper having an auxiliary lever arm
A windshield wiper blade holder has an auxiliary lever arm having first and second free ends. Each one of the free ends presses against the back of a windshield...
US-4,831,679 Wiper arm assembly for motor vehicles
The invention relates to a wiper arm assembly for motor vehicles, comprising an oscillating mounting head (1), a rod (2) rigidly secured to the mounting head...
US-4,831,678 Cleaning tool
A cleaning tool with a bristle body has bristle sets on its underside. On its top side a handle is removably fixed. In order to attain a varied use of cleaning...
US-4,831,677 Sponge mop
A mop of the "butterfly" type has a flat sponge releasably secured to the lower faces of a pair of base plates mounted for pivotal movement relative to the mop...
US-4,831,676 Dental prophylaxis device
A pair of absorbent core members, saturated with dental cleansing material, are enclosed in a spaced-apart disposition within a saturable covering layer having a...
US-4,831,675 Orthotropic steel plate deck bridge with a double rib system
The orthotropic steel plate deck bridge with a double rib system, is a structural steel member with a steel plate deck welded to a closed steel rib which further...
US-4,831,674 Drilling and threading tool and method for drilling and threading
A combined drilling and threading tool comprises a shank having a conical front portion defined by hole-cutting edges, and spirally curved ribs disposed...
US-4,831,673 Apparatus for holding articles to a bed
An apparatus for holding articles to a bed having a mattress, box spring and bed frame is provided and consists of a receptacle member formed to back of a...
US-4,831,672 Floor-level adjusting device for a pool
An improved floor-level adjusting device for a pool is particularly designed to be incorporated in an existing pool at low cost without the destruction thereof....
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