Matches 1 - 44 out of 44


Match Document Document Title
8919172 In situ formation of threads throughout bore of sleeve inserted into substrate hole  
Threads are formed in situ throughout a bore of a sleeve inserted into a corresponding hole a substrate. A sleeve having a bore is inserted into a corresponding hole of a substrate. A mandrel is...
8800341 Ball screw for producing a threaded nut of a ball screw drive  
A method for producing a threaded nut (10, 26) of a screw drive, in particular of a ball screw (7, 24), which threaded nut (10, 26) has, on one axial end, a recess (45) which extends over a...
8573022 Method for making enhanced heat transfer surfaces  
The invention relates to enhanced heat transfer surfaces and methods and tools for making enhanced heat transfer surface. Certain embodiments include a boiling surface that include a plurality of...
8387251 Production method of internally ribbed steel tube  
There is provided a production method of an internally ribbed steel tube, capable of forming spiral ribs stably so as to reduce troubles at the time of cold drawing for forming the spiral ribs of...
8281635 Production method of internally ribbed steel tube and drawing plug for use therein  
There is provided a production method capable of forming spiral ribs stably by reducing troubles at the time of cold drawing for forming the spiral ribs on an internally ribbed steel tube. When...
8011220 Backward extrusion process for inner profiles  
A process of producing an inner profile (18)in a tube or hollow profile (11) includes inserting the tube or hollow profile (11) into a supporting sleeve (12), with a first tube end (19) being...
7607333 Helical groove for a tubular connection  
A tubular connection and methods of manufacturing a box member. The tubular connection includes a box member that includes an internal thread and a pin member that includes an external thread. The...
7509828 Tool for making enhanced heat transfer surfaces  
An improved tool assembly for enhancing the surface of a heat transfer tube is provided. The tool assembly includes rods having cutting tips and positioned in rod guides which are slidably...
6834523 Method for producing seamless tube with grooved inner surface  
Disclosed is a producing method which allows low-cost and highly productive production of a seamless tube with a grooved inner surface having a smooth outer surface and an inner surface formed...
6591657 Method of manufacturing ball joint  
An intermediate molding (41) is formed so that a cylindrical arm-to-be portion (42) projects from the cylindrical outer surface of a body portion (13) of the arm-to-be portion (42). The arm-to-be...
6502598 Backflow prevention assembly  
A backflow prevention assembly has a unitary housing with a passage therethrough, two threaded regions formed in an inner surface of the unitary housing, and two valve assemblies positioned in the...
6334370 Ball screwed nut, linearly guiding apparatus using the same, ball screw for steering and method of manufacturing the ball screwed nut  
A ball rolling groove 1c is defined in an inner peripheral surface of A ball screwed nut 1 by a rolling process, not by a grinding process so that a ball screwed nut having small diameters or...
6192978 Micro-multiport (MMP) tubing with improved metallurgical strength and method for making said tubing  
This invention is a process for making micro-multiport tubing for use in automobile air conditioner heat exchangers. The tubing is a flat body with a row of side-by-side passageways, which are...
5881592 Floating plug for drawing of tubes  
A draw tool and process for producing internally finned copper tubing in which the draw tool has longitudinally extending exterior teeth and grooves having working surfaces that are shaped at...
5517844 Method for forming threadings in a bushing which is used to secure a hose therein  
A method is provided for forming threadings in a bushing and includes (a) providing a die; (b) extruding a tubular bushing made of metallic material into the die; (c) providing a punch member to...
5501091 Method and apparatus for elongating metal tubes by means of a mandrel mill  
In a method of elongating a metal tube by means of a mandrel mill, a tapered mandrel bar is inserted into a hollow piece and the feeding speed of the mandrel bar is controlled so as to change the...
5448821 Method for the manufacture of a waveguide  
Disclosed is a method for the manufacture of a waveguide or a part of a waveguide from a casting, said waveguide comprising at least one part along which two parts of walls of the waveguide, a...
5016460 Durable method for producing finned tubing  
The method of the invention produces a method for fabricating a metal tube that contains at least 30 wt % nickel and 10 wt % chromium. The invention utilized an elongated mandral having an...
4982592 Method of extruding channeled sleeves  
A metal tube, such as a valve body sleeve, is cold extruded to form full length and partial length longitudinal channels in its interior wall surface. The channeled tube is formed by extruding a...
4698902 Method of making commutator rings  
A method of making a commutator ring (2) for a commutator, which is provided with a plurality of commutator segments (7) with connection lugs (10) and anchoring means (44) and which is cold-formed...
4689864 Method of making valve sleeves  
A method of making valve sleeves used for controlling the flow of hydraulic fluid in devices, such as power steering units in motorized vehicle, and the product of the utilized method. The method...
4667394 Method of making a commutator ring having segments  
A method of forming flanged commutator segmental rings in a single power stroke by cold-extrusion which assures full formation of the inner ribs which become commutator segments, so that the...
4614014 Method of manufacturing a valve sleeve  
A method of manufacturing a cylindrical valve sleeve is provided. The method includes the steps of providing a cylindrical valve having an inner wall, an outer wall and an end shoulder disposed...
4611391 Commutator ring manufacturing method and apparatus  
A method for manufacturing commutator segmental rings, in which ring-shaped blanks (1) are transformed into commutator segmental rings. The method is carried out with a forming apparatus which...
4543813 Method of making valve sleeves  
This invention relates to methods of making valve sleeves. The valve sleeve 35 is manufactured from a tube 10 which is initially placed on a mandrel 20, which is formed with axially-extending...
4541261 Method of producing heat pipe  
A heat pipe is provided with a multiplicity of longitudinal deep grooves and ridges formed in the inner peripheral surface thereof. A plurality of shallow grooves are formed by a plastic work in...
4476704 Method for producing finned tubes  
A finned tube for a heat exchanger has an inner surface in which is provided raised portions which are in rows and extend in the longitudinal direction of the tube. The raised portions are...
4457059 Method of making a re-entrant groove heat pipe  
A sealed heat pipe of uniform cross sectional profile from evaporator to condenser which includes a plurality of capillary channels communicating with a central channel by means of narrow...
4452060 Method of processing cylindrical surface  
A method of mechanically processing the cylindrical surface of a part having a cylindrical portion. The cylindrical portion is beforehand provided with a supporting portion at its one end, for...
4429561 Mandrel for cold forging internally profiled tubes or cylinders  
A mandrel for the production of internally profiled, specially threaded tubes or cylinders (2) by the cold forging of tube shaped forging blank (2) around a profiled mandrel (3) by cold forging...
4428222 Cold forging mandrel with threads  
A mandrel for the production of internally threaded tubes or cylinders by the cold forging of a forging blank (3) around an externally threaded mandrel (2). The mandrel is formed with a conicity...
4428220 Method and tool for the cold forging of internally profiled tubes  
A method and tool for cold forging or cold hammering of internally profiled tubes, whereby a forging blank (2) is while rotated, forged by the action of a number of forging hammers (4), whereby...
4287749 Tapered extrusion die and method of forming the same  
A sleeve having a tapered outer surface is shrink or interference fitted over the outer surface of a die blank in which is formed a central bore, a larger diameter bore and a transition bore...
4216575 Method of reforming the fins of a finned tube  
A method of reforming the fins of a finned tube is disclosed. The method comprises forming a tube having a plurality of internal longitudinal fins with a V-notch at the tip of the fins, and...
4204309 Process of fabricating hollow bead rings  
Process of fabricating hollow bead rings for the beads of pneumatic tires, said hollow bead rings having a radial cross-section with at least one interior partition which connects together two...
3987539 Method of making a molded commutator  
In accordance with the present invention there is provided a molded commutator having an improved form of anchoring tooth for each bar extending substantially the entire length of the bar for...
3776018 TUBING WITH INNER BAFFLE FINS AND METHOD OF PRODUCING IT  
Tubing with a longitudinal axis and inner fins extending inclined to the axis and being indented to form multitudinous baffles on the fins, and a method of producing such tubing from a round...
3765207 METHOD AND APPARATUS FOR WORKING OR FINNING TUBING  
Fins or threads are formed on the exterior surface of infinite length tubing restrained against rotation and continuously fed longitudinally to a rotating fin forming head. A mandrel initially...
3750444 METHOD OF CONTINUOUS PRODUCTION OF TUBING WITH HELICAL OR ANNULAR RIBS  
Method of continuous production of ribbed tubes using a smooth-walled tube, corrugating same, and axially squeezing hollow corrugation crests of the tube, preferably by means of revolving die...
3662578 TURBULENCE PROMOTER FORMATION  
A method and an apparatus for forming fluid turbulence promoters on the outer surface of tubes is disclosed. Typically, a set of hardened balls is pressed against the tube surface with sufficient...
3608350 APPARATUS AND METHOD FOR PRODUCING BLANKS FOR COMMUTATORS FOR MINIATURE ELECTRIC DEVICES  
3566651 METHOD AND APPARATUS FOR FORMING INTERNALLY PROFILED TUBULAR PARTS BY MATERIAL DISPLACEMENT  
3422518 METHOD OF REFORMING TUBULAR METAL BLANKS INTO INNER-FIN TUBES  
3289451 Method and apparatus for forming internal helical ribbing in a tube  

Matches 1 - 44 out of 44