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).
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Patent number: 11464685Abstract: 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: GrantFiled: June 3, 2019Date of Patent: October 11, 2022Assignee: FERNO-WASHINGTON, INC.Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Patent number: 11376171Abstract: 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: GrantFiled: July 30, 2020Date of Patent: July 5, 2022Assignee: 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
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Publication number: 20200352803Abstract: 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: ApplicationFiled: July 30, 2020Publication date: November 12, 2020Inventors: Nicholas V. Valentino, Matthew Michael Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Patent number: 10736798Abstract: 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: GrantFiled: September 12, 2018Date of Patent: August 11, 2020Assignee: 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
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Publication number: 20200129349Abstract: 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: ApplicationFiled: December 20, 2019Publication date: April 30, 2020Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Patent number: 10512570Abstract: 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: GrantFiled: December 28, 2015Date of Patent: December 24, 2019Assignee: Ferno-Washington, Inc.Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Publication number: 20190314227Abstract: 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: ApplicationFiled: June 3, 2019Publication date: October 17, 2019Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Patent number: 10335329Abstract: 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: GrantFiled: December 1, 2015Date of Patent: July 2, 2019Assignee: Ferno-Washington, Inc.Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Publication number: 20190015271Abstract: 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: ApplicationFiled: September 12, 2018Publication date: January 17, 2019Inventors: Nicholas V. Valentino, Matthew Michael Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Patent number: 10098796Abstract: 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: GrantFiled: October 27, 2016Date of Patent: October 16, 2018Assignee: Ferno-Washington, Inc.Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Publication number: 20170049642Abstract: 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: ApplicationFiled: December 1, 2015Publication date: February 23, 2017Applicant: Ferno-Washington, Inc.Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Publication number: 20170042749Abstract: 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: ApplicationFiled: October 27, 2016Publication date: February 16, 2017Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Patent number: 9510982Abstract: 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: GrantFiled: April 4, 2014Date of Patent: December 6, 2016Assignee: Ferno-Washington, Inc.Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Publication number: 20160106605Abstract: 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: ApplicationFiled: December 28, 2015Publication date: April 21, 2016Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Publication number: 20160089284Abstract: 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: ApplicationFiled: December 1, 2015Publication date: March 31, 2016Applicant: Ferno-Washington, Inc.Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Patent number: 9248062Abstract: 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: GrantFiled: July 19, 2013Date of Patent: February 2, 2016Assignee: Ferno-Washington, Inc.Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Patent number: 9233033Abstract: 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: GrantFiled: January 13, 2011Date of Patent: January 12, 2016Assignee: Ferno-Washington, Inc.Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Publication number: 20150216747Abstract: 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: ApplicationFiled: July 19, 2013Publication date: August 6, 2015Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Publication number: 20140197654Abstract: 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: ApplicationFiled: April 4, 2014Publication date: July 17, 2014Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak
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Publication number: 20130168987Abstract: 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: ApplicationFiled: January 13, 2011Publication date: July 4, 2013Applicant: FERNO-WASHINGTON, INC.Inventors: Nicholas V. Valentino, Matthew Palastro, Zhen Y. Shen, Timothy R. Wells, Timothy Paul Schroeder, Joshua James Markham, Robert L. Potak