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| Number | Title | Issue Date |
| 7407012 | Thermally stable diamond cutting elements in roller cone drill bits A roller cone drill bit for drilling earth formations includes a bit body having at least one roller cone rotably attached to the bit body and a plurality of cutting elements disposed on the at least one roller cone in a plurality of rows arranged circumferentially ... | 08/05/2008 |
| 7364679 | Tactical venting A method of venting a rotational mold at a predetermined condition by actuating an actuating venting assembly pierces the shell of the molded article and introduces a passageway to relieve pressure during the molding cycle. The actuating venting assembly enables a t... | 04/29/2008 |
| 7306443 | Rotational moulding machine A rotational moulding machine includes three mould manipulator arrangements and a rotatable carrousel on which the manipulators are mounted for indexed rotation between heating, cooling and mould loading stations. Each manipulator includes a rectangular frame, stub ... | 12/11/2007 |
| 7290338 | Method and apparatus of manufacturing electric pole Disclosed are an electric pole manufacturing apparatus having an improved distal end, capable of reducing the cost, arranging tensile cores corresponding to a design load, and providing a high quality electric pole, and a method of manufacturing the electric pole. T... | 11/06/2007 |
| 7165964 | System for rotational molding of medical articles A system and method for molding the shell of a medical device or other molded article is disclosed. The system includes a multi-axis rotational molding machine in which a mold is mounted. The mold has a cavity in the shape of the article to be molded. The mold seals... | 01/23/2007 |
| 7147201 | Method for annealing an electrodeposition structure A method for annealing a structure formed by electrodeposition is provided, the method comprising providing the electrodeposition structure, the electrodeposition structure comprising an electroformed mold, the electroformed mold having a nominal thickness between a... | 12/12/2006 |
| 7108821 | Method for making double-wall shells by centrifuging A method of fabricating a double-walled shell of fiber reinforced plastic material is by centrifuging. The outer wall of the shell is made by projecting glass fibers and resin in a liquid phase against an inside face of a cylindrical mold rotating about its horizont... | 09/19/2006 |
| 7083755 | Method of manufacturing a solar collector panel A method of manufacturing an integral one-piece solar collector panel 10 by a rotational moulding process is disclosed. The solar collector panel 10 has a plurality of fluid ways 15 extending between opposed ends 18, 19 and transverse hea... | 08/01/2006 |
| 6982057 | Multi-layer rotational plastic molding A multi-layer rotational-molded plastic article has an area, such as a sight line for viewing content levels, where an inside layer protrudes through the outside layer and may be bonded to it. A first flowable material such as plastic resin is introduced into a mold... | 01/03/2006 |
| 6981862 | Slush molding machine A slush molding machine having a tool with an outer surface includes a powder assembly. The powder assembly has a powder reservoir and a first lift. The first lift includes a first frame and a cylinder. The powder reservoir is mounted on the first frame. One end of ... | 01/03/2006 |
| 6887065 | Polymeric multiform membrane molding An apparatus for molding a polymeric multiform skin membrane is provided. The molding apparatus includes a rotatable heated mold envelope having an opening. Additionally the mold envelope has channel members which generally extend lateral of the opening. A feed-stoc... | 05/03/2005 |
| 6841108 | Method of manufacturing a balustrade of synthetic material A balustrade product including an elongated molded housing formed of a synthetic material is disclosed. An insert member is embedded within the molded housing to form a plurality of holes extending longitudinally through the molded housing. The insert member include... | 01/11/2005 |
| 6830720 | Cooling tower top forming method A method for forming a top for a cooling tower having a bottom wall at least one opening therein for accommodating an air current generator. The cooling tower top additionally includes a plurality of hot liquid distributors for distributing hot liquid. The cooling t... | 12/14/2004 |
| 6793858 | Method and apparatus for forming a flexible mat defined by interconnected concrete panels A method and apparatus for continuously forming flexible mat structure in the form of spaced, interconnected concrete panels. The mat structure can serve as an erosion control mat along the banks of waterways and within drainage ditches and channels, and can also be... | 09/21/2004 |
| 6713009 | Method and apparatus for molding plastics with elongated metallic cores A rotomolded plastic wall and ladder structure (10, 50, or 58)), which may be an article such as a window well (10) or a manhole (50 or 58), includes a thermoplastic wall (12), a ladder (16) whose rungs (18) ea... | 03/30/2004 |
| 6702566 | Lock assembly for a low pressure mold A lock assembly for a low pressure mold assembly includes a pin which extends from the first mold portion to be received into a female lock member. The female lock member includes a movable lock plate having a key-hole shaped opening. An actuator selectiv... | 03/09/2004 |
| 6673288 | Multi element moving vacuum chamber and process for powder slush plastic casting A multi element moving vacuum chamber (MEMVC) for rotational casting includes a mold having a predefined shape and an axis of rotation, and a box containing casting material. The MEMVC further includes a first vacuum element mounted to an outer mold surfa... | 01/06/2004 |
| 6604931 | Bi-axial rotational molding oven A rotational molding oven for forming an object from a mold containing resin therein. The oven includes a cavity receiving the mold therein and a combustion chamber for providing heat inside of the cavity. A spool is rotatively positioned within the cavit... | 08/12/2003 |
| 6599459 | Method for rotational molding with movable insert A method for rotational molding uses a mold having first and second mold components defining therebetween a mold cavity. The first mold component includes a mold insert adapted to translate toward the second mold component. A spring-biased latch mechanism... | 07/29/2003 |
| 6589470 | Process for producing molded plastic articles A process for forming molded articles from particulate thermoplastic material, the process comprising: (a) providing a track having a plurality of process stations, (b) providing a mold assembly comprising a base, at least one hollow mold upstanding from the b... | 07/08/2003 |
| 6555037 | Multiaxis rotational molding method and apparatus A method of continuously forming integrally molded structures includes the steps of rotating a plurality of independently movable multisection mold assemblies about a plurality of axes, successively flowing a plurality of polymerizable mixtures over surfa... | 04/29/2003 |
| 6514061 | Positioning fixture for a rotary mold A positioning fixture for a rotary mold provides both rotation and lifting for a mold installed therein. The present fixture is adapted particularly for relatively large molds, as used in the forming of hulls and other large structures for relatively larg... | 02/04/2003 |
| 6494705 | Apparatus for rotational mold with movable insert An apparatus for rotational molding provides a mold having first and second mold components defining therebetween a mold cavity. The first mold component includes a mold insert adapted to translate toward the second mold component. A spring-biased latch m... | 12/17/2002 |
| 6461561 | Slush molding process A molding arrangement and method, such as slush or rotational molding, for forming a thermoplastic shell or skin product. The mold arrangement includes a hollow mold housing provided with a mold shell thereon, which together define an air chamber located ... | 10/08/2002 |
| 6409493 | Double-cast slush molding method and apparatus An apparatus for slush molding a thin shell having an outer layer and an inner layer. The apparatus includes two tubs alternately movable to a cast position for dispensing their respective material contents into a mold cavity. According to another embodim... | 06/25/2002 |
| 6405565 | Chalcogenide glass tubing fabrication An apparatus and process for fabricating tubing used in the making of chalcogenide fibers. The apparatus features a three-sectioned melt/spin ampoule that allows for fabricating the chalcogenide tubing without introducing impurities and contaminants, in a... | 06/18/2002 |
| 6338623 | Rotational molding oven A rotational molding oven for forming an object from a mold. The oven includes a cavity for retaining the mold, a burner for heating the cavity and melting the resin and a device for rocking the mold between -45° and 45° from a horizontal plane. The roc... | 01/15/2002 |
| 6322348 | Rotational mold automated clamping system A molding apparatus is disclosed which includes a first support having spaced apart vertical posts, and a first set of mold halves positioned between the vertical posts. A second support is provided having positioned thereon a second set of mold halves. A... | 11/27/2001 |
| 6296792 | Multiaxis rotational molding method, apparatus and structure Multiaxis rotational molding apparatus (11) includes a plurality of spaced generally horizontally oriented arm members (17-20) each having one end (21) extending from an upstanding frame section (22) with one mold assembly (32-35) rotatably mounted adjace... | 10/02/2001 |
| 6284182 | Molding process employing heated fluid A molding apparatus and method for forming a thermoplastic shell or skin product. The molding apparatus includes a hollow mold housing provided with a mold tool thereon, which together define a fluid chamber within the mold housing. A quantity of heated l... | 09/04/2001 |
| 6267917 | Rotatable mold apparatus having replaceable molds and replacement methods The present invention includes a mold apparatus for facilitating replacement of rotatable molds therein. First and second frames are provided forming a plurality of mold cells and each mold includes an upper and a lower mold section. The upper mold sectio... | 07/31/2001 |
| 6162042 | Rotary molding system A rotary molding system has a sintering furnace, at least one cooling chamber, and at least one transport device to receive at least one mold carrier and to transport the mold carrier between the sintering furnace and the at least one cooling chamber. The... | 12/19/2000 |
| 6099293 | Apparatus for manufacturing a respirator cartridge seal A process and apparatus for forming a seal between a filter cartridge wall and a pleated filter disposed within the cartridge having a support for rotating the cartridge. A nozzle is connected to a source of sealant for injecting sealant into an area betw... | 08/08/2000 |
| 6089848 | Apparatus for producing rollers with elastic silicone-based material layers An apparatus for producing rollers covered with layers of elastic silicone-based material, including: a base frame; a hollow box-like cylindrical support-mold rotatably mounted on the base frame about a longitudinal axis,of the support-mold; a device for ... | 07/18/2000 |
| 6082989 | Slush molding apparatus A molding arrangement and method, such as slush or rotational molding, for forming a thermoplastic shell or skin product. The mold arrangement includes a hollow mold housing provided with a mold shell thereon, which together define an air chamber located ... | 07/04/2000 |
| 6036897 | Rotational molding apparatus and method using infrared thermometry A rotational molding apparatus that utilizes stationary temperature sensors, e.g., infra-red thermometry (IRT) sensors, for continuously monitoring the temperature of the molds during rotation.... | 03/14/2000 |
| 6030557 | Multiaxis rotational molding method, apparatus and structure A method of continuously forming an integrally molded structure in a multiaxis rotational molding operation includes the steps of rotating a multisection mold assembly (33) about at least three axes. A first freshly formed polymerizable mixture is flowed ... | 02/29/2000 |
| 6019590 | Slush molding apparatus A molding apparatus and method, such as slush or rotational molding, for forming a thermoplastic shell product. The mold assembly includes a hollow mold box provided with a metal mold shell thereon, which box and shell cooperate to define a hollow chamber... | 02/01/2000 |
| 5932162 | Method and device for molding powdered slush A powdered slush molding device has debris capturing devices in its reservoir. A resin material is passed back and forth through openings between the reservoir and the mold by rotating the apparatus back and forth until a film of desired thickness is form... | 08/03/1999 |
| 5932163 | Thin film cover and method of making same A PVC film cover including a down and interned marginal portion terminating in a thickened bead, the marginal portion tapering in thickness from the bead toward the central body portion of the cover. The cover is produced through the use of a shape-confor... | 08/03/1999 |
