Patents by Inventor Wolfram Schiemann
Wolfram Schiemann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5000904Abstract: A device for producing a plastic blown three-handled container uses a blow mold comprising two mold halves which can be moved towards one another. In the lower region of each mold half a partial handle shell with a wall region is inserted and a groove is provided for the external handles of the three-handled container. The device has a sliding bar for each mold half, the face of which forms at least one part of the blow mold wall when slid into position. The wall region of each partial handle shell extends to the center line of the container. Each partial handle shell has a half of a central handle, which is formed as a half channel, the edges of which extend to the center line of the container. Each sliding bar has a recess for one half of a central handle, and the face of each sliding bar forms the mold wall in the space between the mold halves.Type: GrantFiled: October 5, 1989Date of Patent: March 19, 1991Inventor: Wolfram Schiemann
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Patent number: 4928861Abstract: At the place where the venting through hole of canisters with an external screw thread opens out at the pouring nozzle, a screw-on cover has an annular groove which is liquid-tight with respect to the liquid flowing out from the pouring nozzle. The annular groove in turn communicates by a through air hole with the outside air, so that air can flow into the canister to compensate for the liquid flowing out. Larger canisters in particular can be poured out quickly and without glugging.Type: GrantFiled: January 6, 1989Date of Patent: May 29, 1990Inventor: Wolfram Schiemann
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Patent number: 4903854Abstract: A three-handled blown plastic container has a head portion, an outer wall and two injection-molded partial shells, each comprising an external handle with handle roots, a recessed grip located between the handle roots and a wall region having an outer surface which follows the contour of the three-handled container in the regions of the handle roots, the outer wall, the recessed grip, and the head portion. The partial shells are essentially symmetrical to the central parting line of the container. Blown plastic extends between the partial shells. The wall regions of the partial shells extend to the center line of the container. Within the wall regions there is a wall of blown plastic. Each partial shell carries a continuous channel-shaped half of a central handle, divided along the center line of the container, which combine to form a complete central handle. A strand of blown plastic projects from the wall and extends in the space enclosed by the halves of a central handle.Type: GrantFiled: November 28, 1988Date of Patent: February 27, 1990Inventor: Wolfram Schiemann
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Patent number: 4893724Abstract: A closure for a plastic canister in the 20-30 liter range has a collar coaxial with a pouring spout on the canister, with side abutments with lower surfaces arranged to cooperate with the claws of the closure. A cap is arranged to swing between an open condition and a closed condition relative to the collar. The claw is approximately U-shaped, with a transverse gripping web and two longitudinal webs ending in a fork having an upper and a lower prong. The upper prongs are arranged to form a swivel hinge with journals on the cap. The lower prongs have inner surfaces arranged to cooperate with lower surfaces of the abutments such that when the gripping web is pressed downward a sealing ring in the cap is pressed onto the end face of the pouring nozzle. The collar is arranged to fit against the cap with minimal spacings and the claw is arranged to fit against the collar and the cap with minimal spacings, when the cap is in the closed condition.Type: GrantFiled: June 6, 1988Date of Patent: January 16, 1990Inventor: Wolfram Schiemann
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Patent number: 4889255Abstract: A device suitable for use as a plastic can, is essentially symmetrical to a plane separating two mould halves and features an outer wall, through which said separation plane runs. One or more projections are provided on each side of said separation plane, and the frontal face of said projection is separated from said separation plane. Viewed along the perpendicular to said separation plane, said projections are set off from one another so as not to overlap. The frontal face of said can features one or more projections that face said separation plane and are separated from said outer wall.Type: GrantFiled: October 3, 1988Date of Patent: December 26, 1989Inventor: Wolfram Schiemann
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Patent number: 4886194Abstract: A plastic discharge tube for a fuel can has a canward tube section, a discharge section, a central section having flexible bellows-type peripheral grooves, and axially parallel depressions on the wallof the discharge tube that form a partition wall in the cross-section of the discharge tube. The partition wall is discontinued over the length of the central section provided with the bellows-type peripheral grooves, whereby the cross-section thereof is clear and circular.Type: GrantFiled: March 25, 1988Date of Patent: December 12, 1989Inventor: Wolfram Schiemann
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Patent number: 4881652Abstract: A device suitable for use as a single-piece dual-chambered can of synthetic material, has a larger chamber for holding gasoline, a smaller chamber for holding oil, and a thin connecting member arranged between said chambers in the separation plane between the two said chambers and forming part of said chambers. Said device has on its upper side a handle stadddling the separation plane and possessing a root that begins on the upper side of said larger chamber. The said connecting member is non-linear along a considerable section of its length. The deviation from the linear is many times greater than the thickness of the connecting member.Type: GrantFiled: October 3, 1988Date of Patent: November 21, 1989Inventor: Wolfram Schiemann
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Patent number: 4881647Abstract: A plastics can 15 has a screw closure comprising a screw cap 34. In the closed position, a flat surface 44 of the screw cap 34 lies in one common horizontal plane with the upper edge of two edge handles 28, 29. When several such cans are stacked one upon another, as the result of the additional support on the flat surface 44, greater stability is achieved. Such cans can, therefore, be stacked with less danger. Of particular importance for cans of more than 10 liter capacity (FIG. 1).Type: GrantFiled: November 15, 1988Date of Patent: November 21, 1989Inventor: Wolfram Schiemann
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Patent number: 4844486Abstract: An oil and grease-proof bellows for enclosing joints on axles of motor vehicles is produced from thin thermoplastic elastomers using hollow body production techniques. The bellows has a relatively small diameter collar, a collar of relatively large diameter, and a bellows device disposed between the collars, with an inner envelope and an outer envelope that decreases in diameter towards the smaller diameter collar. At least one bellows rib extends spirally from one collar to the other.Type: GrantFiled: November 18, 1987Date of Patent: July 4, 1989Inventor: Wolfram Schiemann
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Patent number: 4800620Abstract: A hinge connection comprises a one-piece hinge part of synthetic plastic material and a separate part to which the hinge part is fittable. The hinge part comprises an elastic joint film forming a joint axis and stiffening strips extending on both sides thereof parallel to the joint axis and formed by material thickenings. On at least one stiffening strip there are formed two resilient tongues protruding with mutual spacing and in one common plane, on the ends of which tongues there are formed projections pointing away from one another. The separate part comprises an insertion socket into which the tongues can be inserted until the projections engage, in the assembled condition of the hinge connection, behind opposite side wall sections of the insert socket. An elastically flexible crossing piece connects the ends of the tongues.Type: GrantFiled: September 28, 1987Date of Patent: January 31, 1989Inventor: Wolfram Schiemann
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Patent number: 4730747Abstract: A screw stopper for synthetic plastic cans in the range of 10 litres and above has a pouring spout with an external threading, a cap with an internal threading fitting the external threading on the pouring spout, and a connection device between the pouring spout and the cap. The external and internal threadings have an equal pitch, that is high enough that rotation of the cap through 180 degrees plus/minus 30 degrees rotates the cap from a closed to an open position. An articulated handle on the upper side of the cap protrudes far beyond the cap. The connection device includes a retaining ring that guides the cap in a shape-engaging manner and a guide device that is rigidly connected with the pouring spout and guides the retaining ring and has a partial region arranged as an arrestor for the handle grip in the closed position of the cap.Type: GrantFiled: February 24, 1987Date of Patent: March 15, 1988Inventor: Wolfram Schiemann
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Patent number: 4597513Abstract: A pourer pipe for fitting on a can has a rigid end part which can be introduced into the filler pipe of a motor vehicle tank. The rigid end part is angled and equipped with at least two separate vent passages, making the pourer pipe universally usable for filler pipes which extend approximately vertically and filler pipes which extend nearly horizontally. According to the course of the filler pipe, one of the vent passages acts, as intended, as passage for air moving in the opposite direction.Type: GrantFiled: July 23, 1984Date of Patent: July 1, 1986Inventor: Wolfram Schiemann
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Patent number: 4569816Abstract: A pot-shaped blank is shaped from nylon by the injection moulding process. Onto the blank a pot-shaped outer layer of polyethylene is moulded. The coated blank is finish shaped to canister form by a blowing process. The result is a "bonded structure" that substantially prevents permeation of aromatic substances and acyclic and alicyclic compounds. The method is particularly suitable for manufacturing canisters to hold lead-free gasoline.Type: GrantFiled: January 3, 1985Date of Patent: February 11, 1986Inventor: Wolfram Schiemann
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Patent number: 4552175Abstract: A reserve tank is built into the vehicle, and communicates with a filler pipe. A sleeve extends into the reserve tank, the upper end of which defines the reserve capacity, and the other end of which is connected with the inlet of the fuel tank. The contents of the reserve tank can be transferred readily into the fuel tank via a bypass with a valve. An expansion tank with a volume of at least 10% of the tank volume, is likewise connected with the fuel tank via a pipe. An air vent connection of the fuel tank and an air vent connection of the expansion tank are alternately connected with the atmosphere via valves controlled by a closure device, in such a way that, when the filler is open, the air vent connection of the fuel tank is opened, while the air vent connection for the expansion tank is shut. A non-return valve is incorporated in the passage which leads from the connection on the fuel tank via the expansion tank into the air vent connection for the expansion tank.Type: GrantFiled: June 25, 1984Date of Patent: November 12, 1985Inventor: Wolfram Schiemann
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Patent number: 4526289Abstract: Between a screw cap and pouring spout a snap device is formed in such a way that an acoustic signal is generated as soon as the seal between cap top and spout edge is compressed by a specific press stroke. Thus, both inadequate sealing pressing and overloading of the seal or threading are largely avoided.Type: GrantFiled: July 24, 1984Date of Patent: July 2, 1985Inventor: Wolfram Schiemann
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Patent number: 4518009Abstract: A device for a fuel tank for a car with a main fuel tank, comprising a filling tube, a ventilation box, and a piping system leading from the filling tube to the main tank. A reserve tank permanently built into the car is located within the piping system. The reserve tank has an upper wall and a wall with an opening therein. The reserve tank communicates with the filling tube. A pipe protrudes into the reserve tank and has at one end an upwardly open rim, whereby the height of the upper rim determines the volume of gasoline reserve inside the reserve tank. The pipe travels via the opening through the wall of the reserve tank, and forms at its other end the inlet to the main tank. The ventilation box is located at a point above the upper wall of the reserve tank. A by-pass hose by-passes the opening, and has an upper end which leads into a wall area of the reserve tank, and a lower end which leads to a point downstream of the opening.Type: GrantFiled: July 6, 1983Date of Patent: May 21, 1985Inventor: Wolfram Schiemann
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Patent number: 4399850Abstract: A brace for connecting the larger side walls of plastic containers is formed as a separate element of construction inside the canister. The brace has two anchor plates which are joined to the inner surfaces of the canister walls and a collapsible pull brace portion which extends from and between the inner surfaces of the anchor plates. The pull brace portion partially collapses when the side walls move inward and stretches, under tension, to the length between the inner surfaces of the anchor plates.Type: GrantFiled: February 5, 1981Date of Patent: August 23, 1983Inventor: Wolfram Schiemann
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Patent number: 4347954Abstract: A claw closure for a plastic threaded nipple on an extruded plastic canister is tiltably carried by an external metallic collar on the nipple. The metallic collar carries a lid with a ring seal held between inner and outer flanges on the lid bottom. An internal ring in the nipple has a radial flange over the threaded nipple and is integral with the external collar. The internal ring has an axial internal thread for 20 liter canisters. The radial faces of the collar and the internal ring are aligned and set off from each other by an annular groove into which the inner flange of the lid bottom extends. An axial venting hole is provided in the wall region of the internal ring.Type: GrantFiled: October 10, 1980Date of Patent: September 7, 1982Inventor: Wolfram Schiemann
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Patent number: 4337286Abstract: A canister blank has four injection molded side walls having bottom wall sections extending therefrom, which are arranged to be bent at right angles to the side walls to form the container bottom. The side walls have plastic ledges with triangular cross sections projecting at the transition region from the side walls to the bottom wall sections. One concave side of the triangle forms a continuation of the external surface when the bottom wall section is bent and the other concave side of the triangle forms a part of the container bottom when the bottom wall section is bent. The point of the triangle forms an outside edge at the bottom.Type: GrantFiled: January 16, 1981Date of Patent: June 29, 1982Inventor: Wolfram Schiemann
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Patent number: 4135650Abstract: A blow-molded thermoplastic can has front and side walls and a nozzle integral therewith. The nozzle leads into a quarter-moon-shaped, force-absorbing protuberance in the wall of the can directed away from the can handle, which, under force, snaps inward into the can, thereby altering the position of the geometrical longitudinal axis of the nozzle.Type: GrantFiled: September 15, 1975Date of Patent: January 23, 1979Inventor: Wolfram Schiemann