Patents by Inventor Burkhard Vogtherr
Burkhard Vogtherr 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: 11166553Abstract: A chair that can transition from an upright position to a reclined position includes a base to rest on a floor, a post upstanding from the base, a chassis affixed to a top of the post and having left and right extensions, armrests extending upward from the left and right extensions. A seat is made up of a seat pan and a seat upper support frame, which are positioned under and above the chassis respectively and has a hole through which the post extends. A backrest has a lower end pivotally joined to the seat and a pivotal connection to each of the armrests, so rearward pressure on an upper area of the backrest causes pivoting of the backrest at the armrests and at the seat, pushing the seat forward to a reclined position in a synchronous motion.Type: GrantFiled: June 3, 2020Date of Patent: November 9, 2021Assignee: Davis Furniture Industries, Inc.Inventors: Burkhard Vogtherr, Jonathan Prestwich
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Publication number: 20200383478Abstract: A chair that can transition from an upright position to a reclined position includes a base to rest on a floor, a post upstanding from the base, a chassis affixed to a top of the post and having left and right extensions, armrests extending upward from the left and right extensions. A seat is made up of a seat pan and a seat upper support frame, which are positioned under and above the chassis respectively and has a hole through which the post extends. A backrest has a lower end pivotally joined to the seat and a pivotal connection to each of the armrests, so rearward pressure on an upper area of the backrest causes pivoting of the backrest at the armrests and at the seat, pushing the seat forward to a reclined position in a synchronous motion.Type: ApplicationFiled: June 3, 2020Publication date: December 10, 2020Applicant: Davis Furniture Industries, Inc.Inventors: Burkhard Vogtherr, Jonathan Prestwich
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Patent number: 6523895Abstract: A chair of the type having a seat and a separate seat back including a chair frame with a rear segment. The seat back is movably secured to the frame by a mounting mechanism whereby the seat back is capable of pivoting about at least two axes of rotation. The seat may also be connected to a fixed seat support by at least one mounting mechanism, allowing the seat to be pivoted about at least one axis of rotation.Type: GrantFiled: June 13, 2000Date of Patent: February 25, 2003Assignee: Davis Furniture Industries, Inc.Inventor: Burkhard Vogtherr
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Patent number: 6116687Abstract: A seat part (20) of a functional chair is connected to a head part (16) of the pedestal (10) via a joint (18) comprising elastomeric material (38) such that it can be tilted relative to the head part (16) against spring force. A backrest part (28) is similarly connected via a joint (26) to a backrest support (24) which allows the backrest part (28) to tilt relative to the backrest support (24) about a horizontal axis and about an axis which is parallel to the longitudinal direction of the backrest.Type: GrantFiled: February 12, 1999Date of Patent: September 12, 2000Inventor: Burkhard Vogtherr
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Patent number: 5356199Abstract: A mechanism for mounting the seat of a swivel chair to the chair frame, with a first mounting which can be connected to the frame, with a second mounting carried by the first mounting via a joint, which can be connected to the seat and with a spring arrangement for the initial tensioning of the second mounting in an upper position of rest, locking parts on said first and second mounting which are adapted to be engaged and disengaged by a locking slide.Type: GrantFiled: September 28, 1992Date of Patent: October 18, 1994Assignee: Fritz Hansen A/SInventors: Manfred Elzenbeck, Burkhard Vogtherr
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Patent number: 5340197Abstract: A one-piece seat shell having a backrest and a seat connected by an angled transition section that contains a plurality of slots to permit resilient deflection of the backrest with respect to the seat.Type: GrantFiled: September 21, 1992Date of Patent: August 23, 1994Assignee: Fritz Hansen A/SInventor: Burkhard Vogtherr
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Patent number: 5335966Abstract: A frame for use in a cantilever chair comprises vertical pose portions (12) connectable to a seat shell (24). Base portions (36) are connected to points of the post portions (12) lying above the lower ends thereof, the base portions (36) thus being sloped in downward direction. Thus the base portions (36) do not engage the floor (34) along their entire length and provide for additional spring action under load conditions.Type: GrantFiled: March 19, 1992Date of Patent: August 9, 1994Assignee: Fritz Hansen A/SInventor: Burkhard Vogtherr
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Patent number: 4840426Abstract: An office chair in which a backrest and seat are articulated together and the resulting assembly pivotally suspended from the rear end of the side arms which form a pivot point positioned at or near the center of gravity of the chair when occupied. The pivot point is fixed in space by an underlying support system. The lower end of the arm rest is affixed to the rear transverse support arm of a support frame which is, in turn, mounted on the upper end of a vertical support column. The front end of the set member is slidably mounted on a forward cross arm of the support frame through a hexagonally-shaped sliding/locking member in such manner that the back rest and seat may be selectively locked in position or released to adjustably recline (backrest) and slide (seat).Type: GrantFiled: September 30, 1987Date of Patent: June 20, 1989Assignee: Davis Furniture Industries, Inc.Inventors: Burkhard Vogtherr, Manfred Elzenbeck
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Patent number: 4131315Abstract: A chair or other article of furniture for sitting such as a stool or sofa with at least one armrest which is connected to the backrest portion and to the seat portion. The backrest portion of the chair can be reclined, and the armrest is deformable according to the inclination of the backrest portion of the chair.Type: GrantFiled: September 29, 1977Date of Patent: December 26, 1978Assignee: Firma Drabert SohneInventor: Burkhard Vogtherr
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Patent number: D259000Type: GrantFiled: November 4, 1977Date of Patent: April 28, 1981Assignee: Drabert SohneInventor: Burkhard Vogtherr
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Patent number: D289478Type: GrantFiled: June 18, 1984Date of Patent: April 28, 1987Assignee: Klober GmbH & Co.Inventor: Burkhard Vogtherr
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Patent number: D290321Type: GrantFiled: June 18, 1984Date of Patent: June 16, 1987Assignee: Klober GmbH & Co.Inventor: Burkhard Vogtherr
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Patent number: D293982Type: GrantFiled: December 6, 1984Date of Patent: February 2, 1988Assignee: Drabert Sohne GmbH & Co.Inventor: Burkhard Vogtherr
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Patent number: D298593Type: GrantFiled: December 19, 1985Date of Patent: November 22, 1988Assignee: Klober GmbH & Co.Inventor: Burkhard Vogtherr
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Patent number: D314089Type: GrantFiled: September 11, 1987Date of Patent: January 29, 1991Assignee: Klober GmbH & Co.Inventor: Burkhard Vogtherr
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Patent number: D317097Type: GrantFiled: June 13, 1988Date of Patent: May 28, 1991Assignee: Davis Furniture Industries, Inc.Inventors: Burkhard Vogtherr, Manfred Elzenbeck
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Patent number: D317232Type: GrantFiled: June 13, 1988Date of Patent: June 4, 1991Assignee: Davis Furniture Industries, Inc.Inventors: Burkhard Vogtherr, Manfred Elzenbeck
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Patent number: D342624Type: GrantFiled: March 27, 1991Date of Patent: December 28, 1993Assignee: Klober GmbH & Co.Inventor: Burkhard Vogtherr
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Patent number: D418316Type: GrantFiled: October 26, 1998Date of Patent: January 4, 2000Assignee: Klober GmbHInventor: Burkhard Vogtherr