Patents by Inventor Pavol Graf

Pavol Graf 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).

  • Rolling transport cots
    Patent number: 9744086
    Abstract: In one embodiment, a rolling transport cot may include an elongate frame, one or more support linkages, an arcuate coupling member, and a swivel caster. The one or more support linkages may include a pivoting link that is in rotatable engagement with the elongate frame, a traveling link that is in sliding and rotatable engagement with the elongate frame, and an equalizing link that is in rotatable engagement with the traveling link. The arcuate coupling member can be in rotatable engagement with the pivoting link and the equalizing link. The swivel caster may include a wheel that rotates along a surface and a swivel mechanism that can rotate around an axis that is aligned with the surface at a swivel angle ?. When the traveling link is urged along the elongate frame, the swivel angle ? of the swivel mechanism can be substantially constant.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: August 29, 2017
    Assignee: Ferno-Washington, Inc.
    Inventors: Akira Watanabe, Pavol Graf, Michal Vacula
  • ROLLING TRANSPORT COTS
    Publication number: 20160193092
    Abstract: In one embodiment, a rolling transport cot may include an elongate frame, one or more support linkages, an arcuate coupling member, and a swivel caster. The one or more support linkages may include a pivoting link that is in rotatable engagement with the elongate frame, a traveling link that is in sliding and rotatable engagement with the elongate frame, and an equalizing link that is in rotatable engagement with the traveling link. The arcuate coupling member can be in rotatable engagement with the pivoting link and the equalizing link. The swivel caster may include a wheel that rotates along a surface and a swivel mechanism that can rotate around an axis that is aligned with the surface at a swivel angle ?. When the traveling link is urged along the elongate frame, the swivel angle ? of the swivel mechanism can be substantially constant.
    Type: Application
    Filed: March 16, 2016
    Publication date: July 7, 2016
    Inventors: Akira Watanabe, Pavol Graf, Michal Vacula
  • Rolling transport cots
    Patent number: 9314384
    Abstract: In one embodiment, a rolling transport cot may include an elongate frame, one or more support linkages, an arcuate coupling member, and a swivel caster. The one or more support linkages may include a pivoting link that is in rotatable engagement with the elongate frame, a traveling link that is in sliding and rotatable engagement with the elongate frame, and an equalizing link that is in rotatable engagement with the traveling link. The arcuate coupling member can be in rotatable engagement with the pivoting link and the equalizing link. The swivel caster may include a wheel that rotates along a surface and a swivel mechanism that can rotate around an axis that is aligned with the surface at a swivel angle ?. When the traveling link is urged along the elongate frame, the swivel angle ? of the swivel mechanism can be substantially constant.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: April 19, 2016
    Assignee: Ferno-Washington, Inc.
    Inventors: Akira Watanabe, Pavol Graf, Michal Vacula
  • ROLLING TRANSPORT COTS
    Publication number: 20150001871
    Abstract: In one embodiment, a rolling transport cot may include an elongate frame, one or more support linkages, an arcuate coupling member, and a swivel caster. The one or more support linkages may include a pivoting link that is in rotatable engagement with the elongate frame, a traveling link that is in sliding and rotatable engagement with the elongate frame, and an equalizing link that is in rotatable engagement with the traveling link. The arcuate coupling member can be in rotatable engagement with the pivoting link and the equalizing link. The swivel caster may include a wheel that rotates along a surface and a swivel mechanism that can rotate around an axis that is aligned with the surface at a swivel angle ?. When the traveling link is urged along the elongate frame, the swivel angle ? of the swivel mechanism can be substantially constant.
    Type: Application
    Filed: June 24, 2014
    Publication date: January 1, 2015
    Inventors: Akira Watanabe, Pavol Graf, Michal Vacula