Patents by Inventor Darwin Gordon Caldwell

Darwin Gordon Caldwell 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: 11752305
    Abstract: A hand-held device is provided for precisely positioning a needle tip at a desired target position into a non-homogeneous material, including a blood vessel. The hand-held device includes a casing hand-held by an operator, a shaft extending along a longitudinal axis and carrying the needle, the shaft mounted in the casing and coupled to the casing to move as a single piece therewith along the longitudinal axis. The hand-held device further includes a sensor unit to provide signals indicative of a physical characteristic of the material wherein the needle tip has to be inserted, and a control unit configured to determine, based on the signals received from the sensor unit, whether the needle tip has reached the target position and to operate a decoupling unit to decouple the shaft and the needle from the casing or to operate an actuating unit to actively move the shaft relative to the casing.
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: September 12, 2023
    Assignee: FONDAZIONE ISTITUTO ITALIANO DI TECNOLOGIA
    Inventors: Leonardo Serra De Mattos, Zhuoqi Cheng, Brian L. Davies, Darwin Gordon Caldwell
  • Publication number: 20200139086
    Abstract: A hand-held device is provided for precisely positioning a needle tip at a desired target position into a non-homogeneous material, including a blood vessel. The hand-held device includes a casing hand-held by an operator, a shaft extending along a longitudinal axis and carrying the needle, the shaft mounted in the casing and coupled to the casing to move as a single piece therewith along the longitudinal axis. The hand-held device further includes a sensor unit to provide signals indicative of a physical characteristic of the material wherein the needle tip has to be inserted, and a control unit configured to determine, based on the signals received from the sensor unit, whether the needle tip has reached the target position and to operate a decoupling unit to decouple the shaft and the needle from the casing or to operate an actuating unit to actively move the shaft relative to the casing.
    Type: Application
    Filed: May 28, 2018
    Publication date: May 7, 2020
    Inventors: Leonardo SERRA DE MATTOS, Zhuoqi CHENG, Brian L. DAVIES, Darwin Gordon CALDWELL
  • Patent number: 10603803
    Abstract: A humanoid robot foot (10) comprises: a foot base (12), at least one leaf spring (14) acting as a flexible toe of the foot, said at least one leaf spring (14) having a rear portion (14a) rigidly connected to a flat surface (12b) of the foot base (12), a front portion (14b) projecting from the foot base (12) and an intermediate portion (14c) which is not rigidly connected to the foot base (12) and is therefore freely deflectable, along with the front portion (14b), as a result of the application of an external force on the front portion (14b), and a stiffness adjustment device (26) for actively changing the stiffness (K) of said at least one leaf spring (14).
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: March 31, 2020
    Assignees: FONDAZIONE ISTITUTO ITALIANO DI TECNOLOGIA, UNIVERSITA' DEGLI STUDI DI GENOVA
    Inventors: Wooseok Choi, Nikolaos G. Tsagarakis, Gustavo A. Medrano-Cerda, Darwin Gordon Caldwell
  • Publication number: 20180311837
    Abstract: A humanoid robot foot (10) comprises: a foot base (12), at least one leaf spring (14) acting as flexible toe of the foot, said at least one leaf spring (14) having a rear portion (14a) rigidly connected to a flat surface (12b) of the foot base (12), a front portion (14b) projecting from the foot base (12) and an intermediate portion (14c) which is not rigidly connected to the foot base (12) and is therefore freely deflectable, along with the front portion (14b), as a result of the application of an external force on the front portion (14b), and a stiffness adjustment device (26) for actively changing the stiffness (K) of said at least one leaf spring (14).
    Type: Application
    Filed: October 20, 2016
    Publication date: November 1, 2018
    Inventors: Wooseok CHOI, Nicolaos G. TSAGARAKIS, Gustavo A. MEDRANO-CERDA, Darwin Gordon CALDWELL
  • Patent number: 7823941
    Abstract: A Bernoulli Effect pick-up device (1) for the handling of products (20) comprises a surface (4) adapted such that gaseous fluid flow across said surface (4) provides a pick-up force to be generated, by the Bernoulli Effect, in a direction towards said surface (4), and a conduit (2) for the supply of the gaseous fluid. The conduit (2) has an outlet opening (5) at the surface (4) and is adapted to supply gaseous fluid in a direction opposed to the pick-up direction. The outlet (5) of the conduit (2) is associated with a deflector (9) for directing gaseous fluid across the surface (4) and preventing direct impingement of the fluid on a product (2) that has been picked-up by the device (1). The product (20) may for example be a slice of a foodstuff, e.g. tomato or hard-boiled egg.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: November 2, 2010
    Assignee: The University of Salford
    Inventors: Darwin Gordon Caldwell, Steven Thomas Davis
  • Publication number: 20080292446
    Abstract: A Bernoulli Effect pick-up device (1) for the handling of products (20) comprises a surface (4) adapted such that gaseous fluid flow across said surface (4) provides a pick-up force to be generated, by the Bernoulli Effect, in a direction towards said surface (4), and a conduit (2) for the supply of the gaseous fluid. The conduit (2) has an outlet opening (5) at the surface (4) and is adapted to supply gaseous fluid in a direction opposed to the pick-up direction. The outlet (5) of the conduit (2) is associated with a deflector (9) for directing gaseous fluid across the surface (4) and preventing direct impingement of the fluid on a product (2) that has been picked-up by the device (1). The product (20) may for example be a slice of a foodstuff, e.g. tomato or hard-boiled egg.
    Type: Application
    Filed: November 1, 2006
    Publication date: November 27, 2008
    Applicant: The University of Salford
    Inventors: Darwin Gordon Caldwell, Steven Thomas Davis
  • Patent number: D783736
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: April 11, 2017
    Assignee: Fondazione Instituto Italiano Di Technologia
    Inventors: Jake Goldsmith, Claudio Semini, Darwin Gordon Caldwell