Patents by Inventor Rolf G. Schulein
Rolf G. Schulein 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: 5375284Abstract: In a sweeper having a housing 1, in which a sweeping roller 6 driven by impeller wheels 4, 5 is rotatably supported, the sweeping roller comprising a shaft 15 with longitudinally extending sweeping strips 17, the sweeping strips 17 being comprised of a flexible leatherlike plastic material. The sweeping strips 17 are integral with a tube 16 that is slid over onto the shaft 15. Alternatively, the shaft and sweeping strips can be integrally molded as a single part by a two component extrusion process such that the sweeping strips are flexible and the shaft is rigid.Type: GrantFiled: December 18, 1992Date of Patent: December 27, 1994Assignee: Leifheit A.G.Inventors: Helmut Deimel, Rolf G. Schulein
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Patent number: 5368203Abstract: A spice container assembly includes a removable closure body for a spice container that is detachably secured to a stationary tubular holder. The spice container in turn, is held by the closure body via a magnet, to facilitate one-handed removal of a unit comprising the spice container and the closure body from the holder. The spice container is retained in or on the closure body by a magnetic force which is used to seal the spice container.Type: GrantFiled: September 25, 1992Date of Patent: November 29, 1994Assignee: Leifheit AGInventors: Rainer Friedrich, Rolf G. Schulein
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Patent number: 5197197Abstract: To facilitate manufacture and eliminate the possibility of sharp corners projecting from metallic elements of a can opener, a bearing bushing (21) for a feed wheel shaft (20), to which a serrated feed wheel (15) and a twist knob (16) are connected, the handle is formed of two plastic handle shells (18, 19) of which an upper handle shell (18) is a unitary molded element together with the bearing bushing (21) and a counter or guide surface (24) in part surrounding the feed wheel. The bearing bushing extends through a hole in the metallic lever (11, 12) and into an opening of the lower handle shell (19), preferably forming a snap connection, with a slightly projecting shoulder, extending above the lower handle shell.Type: GrantFiled: February 13, 1992Date of Patent: March 30, 1993Assignee: Leifheit AGInventors: Dieter Himmighofen, Rolf G. Schulein
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Patent number: 4762042Abstract: A refillable dispenser for web materials has a housing 1 and a snap-fitted cover 2. A slidable cutter 3 rides in a slit 25 of cover 2. A vertical cutting support surface 11 is formed as an integral extension of a horizontal roll support plate 9. Baseplates 9 may also be integrally formed with back wall 8 of housing 1. The junction of plate 9 and cutting surface 11 define with the adjacent edge of cover 2 a dispensing slot 14, so replacement of rolls 17 is facilitated and threading of web material is simplified. A cooperating lip 18 and recess 19 on surface 11 facilitate grasping the end of the web, and a labyrinthine web path 20 defined by ribs 15, 16 prevents retraction of web material, particularly clingly plastic wrap, back onto the roll after cutting. A leaf spring 29 inside cover 2 urges a disk-shaped blade 23 into a slot 24 of surface 11 while a housing surrounding the blade protects the user.Type: GrantFiled: October 30, 1987Date of Patent: August 9, 1988Assignee: Leifheit AGInventors: Ulrich Denter, Dieter Himmighofen, Rolf G. Schulein
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Patent number: 4610044Abstract: Wiping cloth for a cleaning device with squeezing and/or wringing facilities (3), whereby on the T-formation hem reinforcement (8) - central reinforcement (9) fixing studs (10) are provided, which are clipped on with an asymmetrical spacing and with their longitudinal axes (2) being disposed on the central pitch line (21) of the retraction device (5).Type: GrantFiled: November 13, 1984Date of Patent: September 9, 1986Assignee: Leifheit AktiengesellschaftInventor: Rolf G. Schulein
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Patent number: 4557012Abstract: Wiper appliance with a pressure device arranged between wiper head and shaft with pressure plate and counter pressure plate which pressure device is actuated through the intermediary of a lever system, and with a traction device for the wiper cloth. In a second embodiment the housing includes a pressure plate which is guided by rocker levers, while the rocker levers are guided by catch bearing means integrally moulded on a transverse wall and on the pressure plate, while the rocker levers are integrally moulded on the pressure plate through the intermediary of film hinges.Type: GrantFiled: May 30, 1984Date of Patent: December 10, 1985Assignee: Leifheit AGInventors: Michael Knebel, Rolf G. Schulein
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Patent number: 4546512Abstract: Mechanical sweeper with slotlike bearing bores with introduction slits in partition walls and outwardly open wheel recesses in the housing wherein the drive/running wheels are closed externally with a smooth surface and are retained by check plates and retaining pockets on the partition walls.Type: GrantFiled: November 29, 1983Date of Patent: October 15, 1985Assignee: Leifheit AGInventors: Johannes Liebscher, Rolf G. Schulein
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Patent number: 4489457Abstract: Height adjustment means for a cylindrical brush in a carpet sweeper with a U-shaped adjusting yoke which loads the cylindrical brush and is mounted in the housing by angled parts molded on the free ends of its members and is loaded at the summit part by a spring connected to an adjusting slide and riding up on ramp surfaces.Type: GrantFiled: November 29, 1983Date of Patent: December 25, 1984Assignee: ITT Industries, Inc.Inventors: Helmut Deimel, Rolf G. Schulein
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Patent number: 4263689Abstract: A cylindrical brush is mounted in a housing of a carpet-sweeping device or the like for rotation about an axis extending transversely of the direction of movement of the device over the surface to be cleaned. Two dirt-collecting receptacles are located respectively at the front region of the housing and at the rear region of the housing as considered in the direction of movement of the receptacle over the surface being swept. The dirt-collecting receptacles are removably mounted on the housing, and arrested in their respective fully inserted positions. The dirt-collecting receptacle can be introduced into the housing from the side through one of the lateral portions, from the front, from the rear, from below and from above, depending on the particular construction of the housing. Various arrangements for arresting the dirt-collecting receptacle in its fully inserted position are disclosed.Type: GrantFiled: July 21, 1978Date of Patent: April 28, 1981Assignee: Leifheit International Gunter Leifheit GmbHInventors: Johannes Leibscher, Rolf G. Schulein
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Patent number: 4247054Abstract: An arrangement for comminuting foodstuffs, such as potatoes, cucumbers, carrots, fruits and the like, has an elongated plate provided with a through-going opening in which one comminuting plate member can be accommodated so as to perform comminuting of a foodstuff. The elongated plate has a receptacle which is spaced from the through-going opening and is adapted to receive another comminuting plate member which is not utilized for comminuting at that very moment. The foodstuffs to be comminuted move relative to an upper surface of the base plate, whereas the receptacle for receiving the comminuting plate member which is not utilized, is formed in a lower surface of the base plate. A foodstuff holder is provided which is adapted to hold a foodstuff to be comminuted and to be placed on upper longitudinal walls of the base plate.Type: GrantFiled: April 16, 1979Date of Patent: January 27, 1981Assignee: Leifheit International Gunter LeifheitInventors: Rolf G. Schulein, Johannes Liebscher, Dieter Himmighofen
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Patent number: 4219897Abstract: A cylindrical brush is mounted in a housing of a carpet-sweeping device or the like for rotation about an axis extending transversely of the direction of movement of the device over the surface to be cleaned. Two dirt-collecting receptacles are located respectively at the front region of the housing and at the rear region of the housing as considered in the direction of movement of the receptacle over the surface being swept. The dirt-collecting receptacles are removably mounted on the housing, and arrested in their respective fully inserted positions. The dirt-collecting receptacle can be introduced into the housing from the side through one of the lateral portions, from the front, from the rear, from below and from above, depending on the particular construction of the housing. Various arrangements for arresting the dirt-collecting receptacle in its fully inserted position are disclosed.Type: GrantFiled: October 10, 1978Date of Patent: September 2, 1980Assignee: Leifheit International Gunter Leifheit GmbHInventors: Johannes Leibscher, Rolf G. Schulein
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Patent number: 4207641Abstract: A cylindrical brush is mounted in a housing of a carpet-sweeping device or the like for rotation about an axis extending transversely of the direction of movement of the device over the surface to be cleaned. Two dirt-collecting receptacles are located respectively at the front region of the housing and at the rear region of the housing as considered in the direction of movement of the receptacle over the surface being swept. The dirt-collecting receptacles are removably mounted on the housing, and arrested in their respective fully inserted positions. The dirt-collecting receptacle can be introduced into the housing from the side through one of the lateral portions, from the front, from the rear, from below or from above, depending on the particular construction of the housing. Various arrangements for arresting the dirt-collecting receptacle in its fully inserted position are disclosed.Type: GrantFiled: December 30, 1976Date of Patent: June 17, 1980Assignee: Leifheit International Gunter LeifheitInventors: Johannes Liebscher, Rolf G. Schulein
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Patent number: 4181163Abstract: A kitchen appliance, such as a meat grinder, a vegetable slicer, or the like, includes a housing which has a protrusion on its front side, such protrusion constituting an outlet through which a processed food emerges from the interior of the housing to its exterior. A cover is mounted on the housing in a protective position in which it covers the front surface of the housing in its entirety, including the protrusion. The housing has a base which rests on a support surface and has an extension projecting forwardly beyond the front surface of the housing proper and the cover has a circumferential wall formed with a cutout in which the extension of the base is accommodated in the protective position of the cover. The cover is usable as a receiving container for the processed food emerging from the protrusion of the housing. In the latter instance, it assumes an extended position in which it is supported on the support surface and a depression thereof receives the extension of the base.Type: GrantFiled: October 7, 1977Date of Patent: January 1, 1980Assignee: Leifheit International Gunter Leifheit GmbHInventor: Rolf G. Schulein
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Patent number: 4180229Abstract: A kitchen appliance, such as a meat grinder, is equipped with a suction plate arranged underneath the bottom of the housing of the appliance. The suction plate is attached to the housing by means of a shaft which is mounted on the lateral walls of the housing of the appliance and can be withdrawn to thereby detach the suction plate from the housing of the appliance. The suction plate has an aperture in a connecting element thereof, and the shaft has an eccentric crank portion which is received in the aperture and lifts it upwardly, together with the central region of the suction plate, when the shaft is pivoted from a rest position to an extended position. When the shaft is pivoted further beyond the extended position, it reaches a releasing position in which the shaft can be withdrawn to dissociate the suction plate from the housing. A bulge on the connecting element, located beyond a dead-center position of the shaft, holds the shaft in its extended position.Type: GrantFiled: October 7, 1977Date of Patent: December 25, 1979Assignee: Leifheit International Gunter Leifheit GmbHInventor: Rolf G. Schulein
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Patent number: 4177533Abstract: A cleaning device has a main brush which picks up dirt from a surface to be cleaned and deposits it in dirt-collecting receptacles as the cleaning device is moved over the surface to be cleaned. A pair of additional brushes is mounted in corner regions of the housing and delivers dirt toward the main brush. The additional brushes are rotated as the cleaning device is moved over the surface in opposite directions, and they are mounted in bearings for limited pivoting substantially in the opposite directions so that those portions of the bristles of the additional brushes which move toward the main brush are in contact with the surface to be cleaned. A driving wheel rotates the additional brushes in opposite angular directions depending on the direction of movement of the cleaning device, the additional brushes and the driving wheel being partly supported in a main portion of the housing, and partly in a cover which is connected to the main portion of the housing.Type: GrantFiled: December 4, 1975Date of Patent: December 11, 1979Assignee: Leifheit International Guenter Leifheit GmbHInventors: Johannes Liebscher, Rolf G. Schulein
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Patent number: 4135415Abstract: A corkscrew includes a support consisting of a supporting ring adapted to engage a neck of a bottle, and a support bracket connected to the supporting ring. An elongated spindle having a cork-engaging helix at its leading end and a threaded portion at its trailing end is mounted on the support for turning relative thereto and also for longitudinal displacement. A nut engages the threaded portion of the spindle and has handgrip portions, and a locking element embraces the nut and is pivotable relative thereto between a locking position in which it connects the nut to the spindle for joint turning and longitudinal displacement, and an unlocking position in which it releases the spindle for longitudinal displacement during the further turning of the nut.Type: GrantFiled: June 17, 1977Date of Patent: January 23, 1979Assignee: Leifheit International Gunter Leifheit GmbHInventors: Johannes Liebscher, Rolf G. Schulein
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Patent number: 4094032Abstract: A cleaning device includes a cylindrical brush which is mounted in a housing for rotation about an axis transverse to the direction of movement of the cleaning device over the surface to be cleaned. The brush has at least two sections which are independently driven into rotation about their axis by wheels which are also mounted in the housing. Motion is transmitted between the wheels and the two sections of the brush so that, when wheels on one side of the housing rotate at a different speed than the wheels on the other side of the housing, the rotations of the two sections of the brush about the axis are also different. A connecting element connects the two end portions of the sections of the brush which are adjacent to one another. Such connecting element may be connected to one of the sections of the brush for shared rotation therewith, or may connect the respective end portions with freedom of rotation relative thereto.Type: GrantFiled: January 21, 1976Date of Patent: June 13, 1978Assignee: Leifheit International Gunter Leifheit GmbHInventors: Johannes Liebscher, Rolf G. Schulein, Waldemar Fobbe
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Patent number: 4086677Abstract: A cleaning device includes a housing having a frame including longitudinally spaced front and rear wall portions and transversely spaced lateral portions, and a plurality of support walls which extend in substantial parallelism with the lateral wall portions, on the one hand and with the front wall portion, on the other hand, and with spacing therefrom. The support walls are formed with bearing recesses which have open ends facing toward the surface to be cleaned when the cleaning device is in use, and at least one cover is provided which has respective closing portions which close the open ends of the bearing recesses and circumferentially complement the latter. The device further includes a plurality of wheels which engage the surface to be cleaned, and at least one cleaning body, such as a brush, which is mounted on the housing for rotation and driven into rotation in response to rotation of the wheels during the engagement of the latter with the surface to be cleaned.Type: GrantFiled: March 1, 1976Date of Patent: May 2, 1978Assignee: Leifheit International Gunter Leifheit GmbHInventors: Johannes Liebscher, Rolf G. Schulein
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Patent number: D295888Type: GrantFiled: July 1, 1986Date of Patent: May 24, 1988Assignee: Leifheit AGInventors: Rolf G. Schulein, Rainer Friedrich
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Patent number: D321104Type: GrantFiled: May 15, 1990Date of Patent: October 29, 1991Assignee: Leifheit AGInventor: Rolf G. Schulein