Patents by Inventor Zhen Y. Shen

Zhen Y. Shen 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).

  • Patent number: 11464685
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of front legs, a pair of back legs, and a cot actuation system. The pair of front legs may be slidingly coupled to the support frame. Each front leg includes at least one front wheel. The pair of back legs may be slidingly coupled to the support frame. Each back leg includes at least one back wheel. The cot actuation system includes a front actuator that moves the front legs and a back actuator that moves the back legs. The front actuator and the back actuator raises or lowers the support frame in tandem. The front actuator raises or lowers the front end of the support frame independently of the back actuator. The back actuator raises or lowers the back end of the support frame independently of the front actuator.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: October 11, 2022
    Assignee: FERNO-WASHINGTON, INC.
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Patent number: 11376171
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of back legs, a pair of front legs, and a cot actuation system. The pair of back legs and the pair of front legs can be slidingly coupled to the support frame. Each of the pair of front legs can include a front wheel and an intermediate load wheel. The intermediate load wheel is offset from the front wheel by a load wheel distance. A front actuator can raise the pair of front legs such that the front wheel and the intermediate load wheel of each of the pair of front legs are aligned along a loading level. The intermediate load wheel of each of the pair of front legs can be offset from the pair of back legs by a loading span. The load wheel distance can be greater than the loading span.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: July 5, 2022
    Assignee: Ferno-Washington, Inc.
    Inventors: Nicholas V. Valentino, Matthew Michael Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Publication number: 20200352803
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of back legs, a pair of front legs, and a cot actuation system. The pair of back legs and the pair of front legs can be slidingly coupled to the support frame. Each of the pair of front legs can include a front wheel and an intermediate load wheel. The intermediate load wheel is offset from the front wheel by a load wheel distance. A front actuator can raise the pair of front legs such that the front wheel and the intermediate load wheel of each of the pair of front legs are aligned along a loading level. The intermediate load wheel of each of the pair of front legs can be offset from the pair of back legs by a loading span. The load wheel distance can be greater than the loading span.
    Type: Application
    Filed: July 30, 2020
    Publication date: November 12, 2020
    Inventors: Nicholas V. Valentino, Matthew Michael Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Patent number: 10736798
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of back legs, a pair of front legs, and a cot actuation system. The pair of back legs and the pair of front legs can be slidingly coupled to the support frame. Each of the pair of front legs can include a front wheel and an intermediate load wheel. The intermediate load wheel is offset from the front wheel by a load wheel distance. A front actuator can raise the pair of front legs such that the front wheel and the intermediate load wheel of each of the pair of front legs are aligned along a loading level. The intermediate load wheel of each of the pair of front legs can be offset from the pair of back legs by a loading span. The load wheel distance can be greater than the loading span.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: August 11, 2020
    Assignee: Ferno-Washington, Inc.
    Inventors: Nicholas V. Valentino, Matthew Michael Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Publication number: 20200129349
    Abstract: A cot can include a support frame that extends between a front end and a back end. A front leg and a back leg can be slidingly coupled to the support frame. A front actuator can be coupled to the front leg and slide the front leg to retract and extend the front leg. A back actuator can be coupled to the back leg and slide the back leg to retract and extend the front leg. One or more processors can execute machine readable instructions to receive signals from one or more sensors indicative of the front end of the cot and the front leg. The one or more processors can actuate the back actuator to extend the back leg to raise the back end of the cot, when the front end of the cot is supported by a surface and the front leg is retracted a predetermined amount.
    Type: Application
    Filed: December 20, 2019
    Publication date: April 30, 2020
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Patent number: 10512570
    Abstract: A cot can include a support frame that extends between a front end and a back end. A front leg and a back leg can be slidingly coupled to the support frame. A front actuator can be coupled to the front leg and slide the front leg to retract and extend the front leg. A back actuator can be coupled to the back leg and slide the back leg to retract and extend the front leg. One or more processors can execute machine readable instructions to receive signals from one or more sensors indicative of the front end of the cot and the front leg. The one or more processors can actuate the back actuator to extend the back leg to raise the back end of the cot, when the front end of the cot is supported by a surface and the front leg is retracted a predetermined amount.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: December 24, 2019
    Assignee: Ferno-Washington, Inc.
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Publication number: 20190314227
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of front legs, a pair of back legs, and a cot actuation system. The pair of front legs may be slidingly coupled to the support frame. Each front leg includes at least one front wheel. The pair of back legs may be slidingly coupled to the support frame. Each back leg includes at least one back wheel. The cot actuation system includes a front actuator that moves the front legs and a back actuator that moves the back legs. The front actuator and the back actuator raises or lowers the support frame in tandem. The front actuator raises or lowers the front end of the support frame independently of the back actuator. The back actuator raises or lowers the back end of the support frame independently of the front actuator.
    Type: Application
    Filed: June 3, 2019
    Publication date: October 17, 2019
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Patent number: 10335329
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of front legs, a pair of back legs, and a cot actuation system. The pair of front legs may be slidingly coupled to the support frame. Each front leg includes at least one front wheel. The pair of back legs may be slidingly coupled to the support frame. Each back leg includes at least one back wheel. The cot actuation system includes a front actuator that moves the front legs and a back actuator that moves the back legs. The front actuator and the back actuator raises or lowers the support frame in tandem. The front actuator raises or lowers the front end of the support frame independently of the back actuator. The back actuator raises or lowers the back end of the support frame independently of the front actuator.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: July 2, 2019
    Assignee: Ferno-Washington, Inc.
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Publication number: 20190015271
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of back legs, a pair of front legs, and a cot actuation system. The pair of back legs and the pair of front legs can be slidingly coupled to the support frame. Each of the pair of front legs can include a front wheel and an intermediate load wheel. The intermediate load wheel is offset from the front wheel by a load wheel distance. A front actuator can raise the pair of front legs such that the front wheel and the intermediate load wheel of each of the pair of front legs are aligned along a loading level. The intermediate load wheel of each of the pair of front legs can be offset from the pair of back legs by a loading span. The load wheel distance can be greater than the loading span.
    Type: Application
    Filed: September 12, 2018
    Publication date: January 17, 2019
    Inventors: Nicholas V. Valentino, Matthew Michael Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Patent number: 10098796
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of back legs, a pair of front legs, and a cot actuation system. The pair of back legs and the pair of front legs can be slidingly coupled to the support frame. Each of the pair of front legs can include a front wheel and an intermediate load wheel. The intermediate load wheel is offset from the front wheel by a load wheel distance. A front actuator can raise the pair of front legs such that the front wheel and the intermediate load wheel of each of the pair of front legs are aligned along a loading level. The intermediate load wheel of each of the pair of front legs can be offset from the pair of back legs by a loading span. The load wheel distance can be greater than the loading span.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: October 16, 2018
    Assignee: Ferno-Washington, Inc.
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Publication number: 20170049642
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of front legs, a pair of back legs, and a cot actuation system. The pair of front legs may be slidingly coupled to the support frame. Each front leg includes at least one front wheel. The pair of back legs may be slidingly coupled to the support frame. Each back leg includes at least one back wheel. The cot actuation system includes a front actuator that moves the front legs and a back actuator that moves the back legs. The front actuator and the back actuator raises or lowers the support frame in tandem. The front actuator raises or lowers the front end of the support frame independently of the back actuator. The back actuator raises or lowers the back end of the support frame independently of the front actuator.
    Type: Application
    Filed: December 1, 2015
    Publication date: February 23, 2017
    Applicant: Ferno-Washington, Inc.
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Publication number: 20170042749
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of back legs, a pair of front legs, and a cot actuation system. The pair of back legs and the pair of front legs can be slidingly coupled to the support frame. Each of the pair of front legs can include a front wheel and an intermediate load wheel. The intermediate load wheel is offset from the front wheel by a load wheel distance. A front actuator can raise the pair of front legs such that the front wheel and the intermediate load wheel of each of the pair of front legs are aligned along a loading level. The intermediate load wheel of each of the pair of front legs can be offset from the pair of back legs by a loading span. The load wheel distance can be greater than the loading span.
    Type: Application
    Filed: October 27, 2016
    Publication date: February 16, 2017
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Patent number: 9510982
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of back legs, a pair of front legs, and a cot actuation system. The pair of back legs and the pair of front legs can be slidingly coupled to the support frame. Each of the pair of front legs can include a front wheel and an intermediate load wheel. The intermediate load wheel is offset from the front wheel by a load wheel distance. A front actuator can raise the pair of front legs such that the front wheel and the intermediate load wheel of each of the pair of front legs are aligned along a loading level. The intermediate load wheel of each of the pair of front legs can be offset from the pair of back legs by a loading span. The load wheel distance can be greater than the loading span.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: December 6, 2016
    Assignee: Ferno-Washington, Inc.
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Publication number: 20160106605
    Abstract: A cot can include a support frame that extends between a front end and a back end. A front leg and a back leg can be slidingly coupled to the support frame. A front actuator can be coupled to the front leg and slide the front leg to retract and extend the front leg. A back actuator can be coupled to the back leg and slide the back leg to retract and extend the front leg. One or more processors can execute machine readable instructions to receive signals from one or more sensors indicative of the front end of the cot and the front leg. The one or more processors can actuate the back actuator to extend the back leg to raise the back end of the cot, when the front end of the cot is supported by a surface and the front leg is retracted a predetermined amount.
    Type: Application
    Filed: December 28, 2015
    Publication date: April 21, 2016
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Publication number: 20160089284
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of front legs, a pair of back legs, and a cot actuation system. The pair of front legs may be slidingly coupled to the support frame. Each front leg includes at least one front wheel. The pair of back legs may be slidingly coupled to the support frame. Each back leg includes at least one back wheel. The cot actuation system includes a front actuator that moves the front legs and a back actuator that moves the back legs. The front actuator and the back actuator raises or lowers the support frame in tandem. The front actuator raises or lowers the front end of the support frame independently of the back actuator. The back actuator raises or lowers the back end of the support frame independently of the front actuator.
    Type: Application
    Filed: December 1, 2015
    Publication date: March 31, 2016
    Applicant: Ferno-Washington, Inc.
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Patent number: 9248062
    Abstract: A cot can include a support frame that extends between a front end and a back end. A front leg and a back leg can be slidingly coupled to the support frame. A front actuator can be coupled to the front leg and slide the front leg to retract and extend the front leg. A back actuator can be coupled to the back leg and slide the back leg to retract and extend the front leg. One or more processors can execute machine readable instructions to receive signals from one or more sensors indicative of the front end of the cot and the front leg. The one or more processors can actuate the back actuator to extend the back leg to raise the back end of the cot, when the front end of the cot is supported by a surface and the front leg is retracted a predetermined amount.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: February 2, 2016
    Assignee: Ferno-Washington, Inc.
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Patent number: 9233033
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of front legs, a pair of back legs, and a cot actuation system. The pair of front legs may be slidingly coupled to the support frame. Each front leg includes at least one front wheel. The pair of back legs may be slidingly coupled to the support frame. Each back leg includes at least one back wheel. The cot actuation system includes a front actuator that moves the front legs and a back actuator that moves the back legs. The front actuator and the back actuator raises or lowers the support frame in tandem. The front actuator raises or lowers the front end of the support frame independently of the back actuator. The back actuator raises or lowers the back end of the support frame independently of the front actuator.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: January 12, 2016
    Assignee: Ferno-Washington, Inc.
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Publication number: 20150216747
    Abstract: A cot can include a support frame that extends between a front end and a back end. A front leg and a back leg can be slidingly coupled to the support frame. A front actuator can be coupled to the front leg and slide the front leg to retract and extend the front leg. A back actuator can be coupled to the back leg and slide the back leg to retract and extend the front leg. One or more processors can execute machine readable instructions to receive signals from one or more sensors indicative of the front end of the cot and the front leg. The one or more processors can actuate the back actuator to extend the back leg to raise the back end of the cot, when the front end of the cot is supported by a surface and the front leg is retracted a predetermined amount.
    Type: Application
    Filed: July 19, 2013
    Publication date: August 6, 2015
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Publication number: 20140197654
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of back legs, a pair of front legs, and a cot actuation system. The pair of back legs and the pair of front legs can be slidingly coupled to the support frame. Each of the pair of front legs can include a front wheel and an intermediate load wheel. The intermediate load wheel is offset from the front wheel by a load wheel distance. A front actuator can raise the pair of front legs such that the front wheel and the intermediate load wheel of each of the pair of front legs are aligned along a loading level. The intermediate load wheel of each of the pair of front legs can be offset from the pair of back legs by a loading span. The load wheel distance can be greater than the loading span.
    Type: Application
    Filed: April 4, 2014
    Publication date: July 17, 2014
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
  • Publication number: 20130168987
    Abstract: According to one embodiment, a roll-in cot may include a support frame, a pair of front legs, a pair of back legs, and a cot actuation system. The pair of front legs may be slidingly coupled to the support frame. Each front leg includes at least one front wheel. The pair of back legs may be slidingly coupled to the support frame. Each back leg includes at least one back wheel. The cot actuation system includes a front actuator that moves the front legs and a back actuator that moves the back legs. The front actuator and the back actuator raises or lowers the support frame in tandem. The front actuator raises or lowers the front end of the support frame independently of the back actuator. The back actuator raises or lowers the back end of the support frame independently of the front actuator.
    Type: Application
    Filed: January 13, 2011
    Publication date: July 4, 2013
    Applicant: FERNO-WASHINGTON, INC.
    Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak