Patents by Inventor Sijmen Sipma
Sijmen Sipma 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: 7841271Abstract: A cheese vat for at least preparing curd for soft fresh cheese, comprising at least one cutting frame provided with a cutting wire system, which has a frame which has at least two opposite frame parts between which cutting wire sections extend, which frame parts are provided with openings form receiving a cutting wire, wherein the ends of a cutting wire are each fastened via pull relief means.Type: GrantFiled: September 20, 2007Date of Patent: November 30, 2010Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Sijmen Sipma, Wieger van der Meulen
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Patent number: 7544917Abstract: A curd preparation vat provided with a sealing construction for a shaft passing through a wall of the vat, which sealing construction has at least one receiving space and a sealing ring included therein in operation, surrounding the shaft, wherein the sealing ring has an annular body which is provided with a sealing lip which cooperates with a radially extending surface of the sealing construction, and wherein the annular body furthermore has an axially inner surface abutting against first positioning means of the sealing construction, wherein the sealing lip of the at least one sealing ring extends both radially and axially obliquely outwards from a both radially and axially outer edge area of the annular body, and wherein between the sealing lip and the inner surface of the annular body that abuts against the shaft, an axially outer surface of the annular body is situated, which cooperates directly with second positioning means, which leave the lip clear, for fixing the at least one sealing ring between theType: GrantFiled: July 29, 2005Date of Patent: June 9, 2009Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Sijmen Sipma, Wieger van der Meulen, Sebastiaan Jozef Clemens Buijs
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Publication number: 20080047442Abstract: A cheese vat for at least preparing curd for soft fresh cheese, comprising at least one cutting frame provided with a cutting wire system, which has a frame which has at least two opposite frame parts between which cutting wire sections extend, which frame parts are provided with openings form receiving a cutting wire, wherein the ends of a cutting wire are each fastened via pull relief means.Type: ApplicationFiled: September 20, 2007Publication date: February 28, 2008Inventors: Sijmen Sipma, Wieger van der Maulen
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Patent number: 7305917Abstract: A cheese vat for at least preparing curd for soft fresh cheese, comprising at least one cutting frame provided with a cutting wire system, which has a frame which has at least two opposite frame parts between which cutting wire sections extend, which frame parts are provided with openings form receiving a cutting wire, wherein the ends of a cutting wire are each fastened via pull relief means.Type: GrantFiled: December 8, 2003Date of Patent: December 11, 2007Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Sijmen Sipma, Wieger van der Meulen
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Publication number: 20060021518Abstract: A curd preparation vat provided with a sealing construction for a shaft passing through a wall of the vat, which sealing construction has at least one receiving space and a sealing ring included therein in operation, surrounding the shaft, wherein the sealing ring has an annular body which is provided with a sealing lip which cooperates with a radially extending surface of the sealing construction, and wherein the annular body furthermore has an axially inner surface abutting against first positioning means of the sealing construction, wherein the sealing lip of the at least one sealing ring extends both radially and axially obliquely outwards from a both radially and axially outer edge area of the annular body, and wherein between the sealing lip and the inner surface of the annular body that abuts against the shaft, an axially outer surface of the annular body is situated, which cooperates directly with second positioning means, which leave the lip clear, for fixing the at least one sealing ring between theType: ApplicationFiled: July 29, 2005Publication date: February 2, 2006Inventors: Sijmen Sipma, Wieger van der Meulen, Sebastiaan Jozef Buijs
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Publication number: 20040168582Abstract: A cheese vat for at least preparing curd for soft fresh cheese, comprising at least one cutting frame provided with a cutting wire system, which has a frame which has at least two opposite frame parts between which cutting wire sections extend, which frame parts are provided with openings form receiving a cutting wire, wherein the ends of a cutting wire are each fastened via pull relief means.Type: ApplicationFiled: December 8, 2003Publication date: September 2, 2004Inventors: Sijmen Sipma, Wieger van der Meulen
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Patent number: 6539845Abstract: Apparatus for cutting and stirring curd, comprising a curd vat with a shaft drivable for rotation, which shaft comprises a number of cutting frames extending radially from the shaft and having a number of strip-shaped transverse knives and longitudinal knives, the longitudinal knives each having an inner end situated near the shaft and an outer end situated near the wall of the curd vat, while at least a number of longitudinal knives of at least one of the cutting frames are provided, at the outer end situated near the wall of the curd vat, with a knife end section which has at least one portion extending transversely to the longitudinal direction of the longitudinal knives.Type: GrantFiled: March 29, 2002Date of Patent: April 1, 2003Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Sijmen Sipma, Sjoerd Huitema
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Publication number: 20020096057Abstract: Apparatus for cutting and stirring curd, comprising a curd vat with a shaft drivable for rotation, which shaft comprises a number of cutting frames extending radially from the shaft and having a number of strip-shaped transverse knives and longitudinal knives, the longitudinal knives each having an inner end situated near the shaft and an outer end situated near the wall of the curd vat, while at least a number of longitudinal knives of at least one of the cutting frames are provided, at the outer end situated near the wall of the curd vat, with a knife end section which has at least one portion extending transversely to the longitudinal direction of the longitudinal knives.Type: ApplicationFiled: March 29, 2002Publication date: July 25, 2002Inventors: Sijmen Sipma, Sjoerd Huitema
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Patent number: 6418836Abstract: Apparatus for cutting and stirring curd, comprising a curd vat with a shaft drivable for rotation, which shaft comprises a number of cutting frames extending radially from the shaft and having a number of strip-shaped transverse knives and longitudinal knives, the longitudinal knives each having an inner end situated near the shaft and an outer end situated near the wall of the curd vat, while at least a number of longitudinal knives of at least one of the cutting frames are provided, at the outer end situated near the wall of the curd vat, with a knife end section which has at least one portion extending transversely to the longitudinal direction of the longitudinal knives.Type: GrantFiled: April 25, 2001Date of Patent: July 16, 2002Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Sijmen Sipma, Sjoerd Huitema
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Patent number: 6367375Abstract: Apparatus for cutting and stirring curd, comprising a curd vat with a shaft drivable for rotation, which shaft carries a number of cutting frames extending radially from the shaft and arranged on the shaft in staggered relation, each cutting frame having two frame girders, which extend radially from the drivable shaft and between which a lattice work is situated formed from longitudinal knives and transverse knives, the transverse knives being mounted on the frame girders by welding. The transverse knives form openings which are in line, in which the longitudinal knives are received with ample play, while means are provided for substantially preventing displacement of the longitudinal knives in the longitudinal direction.Type: GrantFiled: May 25, 2001Date of Patent: April 9, 2002Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Sijmen Sipma, Sjoerd Huitema
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Publication number: 20020003181Abstract: Apparatus for cutting and stirring curd, comprising a curd vat with a shaft drivable for rotation, which shaft comprises a number of cutting frames extending radially from the shaft and having a number of strip-shaped transverse knives and longitudinal knives, the longitudinal knives each having an inner end situated near the shaft and an outer end situated near the wall of the curd vat, while at least a number of longitudinal knives of at least one of the cutting frames are provided, at the outer end situated near the wall of the curd vat, with a knife end section which has at least one portion extending transversely to the longitudinal direction of the longitudinal knives.Type: ApplicationFiled: April 25, 2001Publication date: January 10, 2002Inventors: Sijmen Sipma, Sjoerd Huitema
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Publication number: 20010022141Abstract: Apparatus for cutting and stirring curd, comprising a curd vat with a shaft drivable for rotation, which shaft carries a number of cutting frames extending radially from the shaft and arranged on the shaft in staggered relation, each cutting frame having two frame girders, which extend radially from the drivable shaft and between which a lattice work is situated formed from longitudinal knives and transverse knives, the transverse knives being mounted on the frame girders by welding. The transverse knives form openings which are in line, in which the longitudinal knives are received with ample play, while means are provided for substantially preventing displacement of the longitudinal knives in the longitudinal direction.Type: ApplicationFiled: May 25, 2001Publication date: September 20, 2001Inventors: Sijmen Sipma, Sjoerd Huitema
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Patent number: 6257129Abstract: Apparatus for cutting and stirring curd, comprising a curd vat with a shaft drivable for rotation, which shaft carries a number of cutting frames extending radially from the shaft and arranged on the shaft in staggered relation, each cutting frame having two frame girders, which extend radially from the drivable shaft and between which a lattice work is situated formed from longitudinal knives and transverse knives, the transverse knives being mounted on the frame girders by welding. The transverse knives form openings which are in line, in which the longitudinal knives are received with ample play, while a device are provided for substantially preventing displacement of the longitudinal knives in the longitudinal direction.Type: GrantFiled: September 12, 2000Date of Patent: July 10, 2001Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Sijmen Sipma, Sjoerd Huitema
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Patent number: RE42938Abstract: Apparatus for cutting and stirring curd, comprising a curd vat with a shaft drivable for rotation, which shaft carries a number of cutting frames extending radially from the shaft and arranged on the shaft in staggered relation, each cutting frame having two frame girders, which extend radially from the drivable shaft and between which a lattice work is situated formed from longitudinal knives and transverse knives, the transverse knives being mounted on the frame girders by welding. The transverse knives form openings which are in line, in which the longitudinal knives are received with ample play, while means are provided for substantially preventing displacement of the longitudinal knives in the longitudinal direction.Type: GrantFiled: April 9, 2004Date of Patent: November 22, 2011Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Sijmen Sipma, Sjoerd Huitema