Patents by Inventor Ake L. Larsson
Ake L. Larsson 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: 5133551Abstract: A sound producing game bat includes a generally cylindrical slide tube having a center bore defined therein and a fluted outer surface. A generally cylindrical slide weight is received within the center bore of the slide tube and is captivated at the handle end by a resilient dampening plug. The hitting end of the game bat includes a sound producing unit having a sound unit housing within which a diaphragm and diaphragm cone are resiliently supported. During swings of the game bat by the batter, the slide weight travels through the center bore of the slide tube and strikes the diaphragm cone causing the diaphragm to vibrate and producing sound effects. A foam covering is molded upon the game bat to enclose virtually the entire bat in a secure attachment.Type: GrantFiled: January 24, 1992Date of Patent: July 28, 1992Assignee: Mattel, Inc.Inventors: John N. Handy, Ake L. Larsson
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Patent number: 4708714Abstract: An apparatus is disclosed for the separation of one or more fractions out of whole blood, plasma, or other similar body fluids utilizing an adsorption column comprising means for feeding the fluid to the column and means for the removal of same. The apparatus includes an analyzing device for the coarse analysis of the fluid and a valve device which is adapted to conduct the fluid flow from the column as a function of the analysis carried out to one of two analyzing devices for the fine analysis of the fluid to determine if the fluid is to be conveyed to a collection container, conveyed back to the source or conveyed to a drain.Type: GrantFiled: October 11, 1985Date of Patent: November 24, 1987Assignee: Gambro Lundia ABInventors: Lars-Ake L. Larsson, Ake W. Nilsson, Bo Ingemar W. Johannson, Lars Olof V. Naucler
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Patent number: 4583561Abstract: A hair twining apparatus configured for one hand operation of a trigger, the apparatus having at least two hair clamp members carried by a sub-housing within a housing. With a switch in a first position, pumping of the trigger rotates the clamp members about the supporting shafts thereof for twisting groups of hair filaments attached to the clamp members. With the switch in a second position, pumping of the trigger causes intermittent unidirectional angular displacement of the hair clamp members to twine the strands by rotating the sub-housing.Type: GrantFiled: October 13, 1983Date of Patent: April 22, 1986Assignee: Mattel, Inc.Inventor: Ake L. Larsson
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Patent number: 4372484Abstract: Apparatus for separating a liquid, such as whole blood, into fractions having different densities includes a separation chamber and a transfer device, such as a continuous piece of flexible tubing, for supplying the liquid to the separation chamber and discharging the liquid fractions therefrom. The separation chamber and the transfer device are conjointly rotated about a first axis which passes through a stationary end of the transfer device, while being simultaneously and conjointly rotated about a second axis which is coincident with a medial longitudinal axis of the rotating end of the transfer device so as to prevent the transfer device from twisting as a result of its rotation about the first axis.Type: GrantFiled: February 4, 1981Date of Patent: February 8, 1983Assignee: Gambro ABInventors: Lars-Ake L. Larsson, Claes-Ake Gullberg, Kaj Stenberg, Nils G. E. Boberg
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Patent number: 4361484Abstract: A process for the treating of and/or removal of substances from a liquid, especially whole blood, via a semipermeable microporous membrane (13, 14, 15) through adsorption and/or biological reaction by means of a biologically active material. Said whole blood is exposed to pressure variations at the membrane surface in a way such that a penetrating fraction of said whole blood is flowing in an alternating flow path through the membrane walls for contacting said biologically active material.Said biologically active material is asymmetrically immobilized in and on the surface of the side of said membrane that faces away from said whole blood. Alternatively, said biologically active material may be bound to an unsoluble matrix behind said membrane.Said membrane is for example provided within a casing (7, 8, 9) comprising inlet (10) and outlet (11) for said whole blood.Type: GrantFiled: February 11, 1981Date of Patent: November 30, 1982Assignee: Gambro ABInventors: Lars-Ake L. Larsson, Lars O. V. Naucler, Ulf T. G. Nylen
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Patent number: 4293409Abstract: A dialysis system is disclosed for treatment of a first fluid with dialysis fluid, the dialysis fluid being a mixture of water and dialysis concentrate. The system comprises a dialyzer, a source of water, a source of dialysis concentrate, first and second fluid conducting means communicating with the sources of water and dialysis concentrate, pump means associated with the first and second fluid conducting means, and third fluid conducting means for conducting fluid from the pump means to the dialyzer. The pump means serves to draw water and dialysis concentrate through the first and second fluid conducting means respectively, and to mix the water and dialysis concentrate so that a mixture of water and dialysis concentrate is conducted through the third fluid conducting means.Type: GrantFiled: November 28, 1978Date of Patent: October 6, 1981Assignee: Gambro ABInventors: Gerhard Riede, Lars-Ake L. Larsson, Roland J. E. Andersson, Sven A. Josson, Lars J. C. Traven
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Patent number: 4241534Abstract: A toy vehicle having a spring drive mechanism coupled through first and second unidirectional slip clutch members to the drive wheels thereof, the slip clutches including gear members for winding the spring through a first gear ratio while pushing the vehicle in the reverse direction on a surface, and for propelling the vehicle through a second gear ratio upon release of the vehicle, each of the actions utilizing only one of the slip clutch members.Type: GrantFiled: February 14, 1979Date of Patent: December 30, 1980Assignee: Mattel, Inc.Inventors: Ake L. Larsson, Gunther E. Gronwold, Derek A. Corris
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Patent number: 4191359Abstract: Control apparatus for controlling or adjusting the position of a control member is disclosed. The control apparatus includes first and second members, pivotally connected together to pivot about a point. A control member is mounted on the first member and is disposed at a first distance from the pivot point. Coarse control means operatively associated with the control member are provided for coarsely adjusting the position of the control member relative to the second member. Further, fine control means are provided for finely adjusting the position of the control member relative to the second member. The fine control means acts at an action point on one of the first and second members to pivot the first and second members relative to each other about the pivot point.Type: GrantFiled: December 5, 1977Date of Patent: March 4, 1980Assignee: Gambro ABInventors: Roland J. E. Andersson, Lars-Ake L. Larsson, Lars J. C. Traven
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Patent number: 4191646Abstract: Fluid conducting apparatus is disclosed for a dialysis system having a dialyzer, a source of dialysis fluid for the dialyzer, a heating chamber for heating dialysis fluid before introduction into the dialyzer, and pump means for pumping heated dialysis fluid from the heating chamber to and through the dialyzer. The fluid conducting apparatus includes first and second fluid conducting means. The first fluid conducting means is adapted to be connected to the source of dialysis fluid and to the heating chamber for introducing dialysis fluid into the heating chamber, and the second fluid conducting means is adapted to be connected to the heating chamber, the dialyzer and the pump means for conducting the fluid from the heating chamber to and through the dialyzer. The apparatus also includes shut-off means adapted to terminate the flow of heated dialysis fluid from the heating chamber to the dialyzer when the rate of flow of fluid out of the chamber exceeds the rate of flow of fluid into the chamber.Type: GrantFiled: October 13, 1977Date of Patent: March 4, 1980Assignee: Gambro ABInventors: Lars-Ake L. Larsson, Lars J. C. Traven
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Patent number: 4158034Abstract: A method and apparatus for sterilization of a dialysis system. The dialysis system comprises a dialyzer, a receptacle for water and a receptacle for dialysis concentrate, and fluid conducting means for conducting fluids from the receptacles for water and dialysis concentrate to and through the dialyzer. The method includes the steps of terminating the conducting of dialysis concentrate through the fluid conducting means, introducing sterilizing agent into the fluid conducting means at a first point in the fluid conducting means, conducting the sterilizing agent through the fluid conducting means downstream of the first point, and directing a portion of the sterilizing agent from a second point in the fluid conducting means to a third point in the fluid conducting means, the second point being downstream of the first point and the third point being upstream of the first point.Type: GrantFiled: October 13, 1977Date of Patent: June 12, 1979Assignee: Gambro ABInventors: Gerhard Riede, Lars-Ake L. Larsson, Roland J. E. Andersson, Sven A. Jonsson