Patents by Inventor Derwin Fritts

Derwin Fritts 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).

  • Gem microscope having a swivel base and a stationary power cord
    Patent number: 7382528
    Abstract: A gem microscope includes a base structure that supports the microscope stage, focus column, and optical head. The base structure includes a lower component that receives a power cord; the lower component and the power cord remain stationary when the gem microscope is in use. The base structure also includes an upper component rotatably coupled to the lower component. The upper component can rotate around the lower component to enable convenient sharing of the gem microscope by a number of users. The base structure includes an electrical coupler assembly that maintains an electrical connection (for the gem microscope power supplies) throughout rotation of the gem microscope.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: June 3, 2008
    Assignee: Gemological Institute of America, Inc.
    Inventors: Howard Pomerantz, Sherman Gingerella, Derwin Fritts
  • Gem microscope with portability kit
    Patent number: 7142358
    Abstract: A gem microscope according to the invention includes a focus column, a stage, and a quick disconnect mechanism that facilitates removable coupling of the focus column to the stage. The focus column and the stage have compatible features that establish the proper mounting plane and lateral alignment of the focus column relative to the stage. In the example embodiment, the quick disconnect mechanism includes a threaded element on the focus column and a compatibly threaded thumbwheel that rotates within the stage to connect/disconnect the focus column to/from the stage.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: November 28, 2006
    Assignee: Gemological Institute of America, Inc.
    Inventors: Howard Pomerantz, Sherman Gingerella, Derwin Fritts
  • GEM MICROSCOPE HAVING A SWIVEL BASE AND A STATIONARY POWER CORD
    Publication number: 20060198019
    Abstract: A gem microscope includes a base structure that supports the microscope stage, focus column, and optical head. The base structure includes a lower component that receives a power cord; the lower component and the power cord remain stationary when the gem microscope is in use. The base structure also includes an upper component rotatably coupled to the lower component. The upper component can rotate around the lower component to enable convenient sharing of the gem microscope by a number of users. The base structure includes an electrical coupler assembly that maintains an electrical connection (for the gem microscope power supplies) throughout rotation of the gem microscope.
    Type: Application
    Filed: November 30, 2005
    Publication date: September 7, 2006
    Applicant: Gemological Institute of America, Inc.
    Inventors: Howard Pomerantz, Sherman Gingerella, Derwin Fritts
  • Gem microscope having a swivel base and a stationary power cord
    Patent number: 7009762
    Abstract: A gem microscope includes a base structure that supports the microscope stage, focus column, and optical head. The base structure includes a lower component that receives a power cord; the lower component and the power cord remain stationary when the gem microscope is in use. The base structure also includes an upper component rotatably coupled to the lower component. The upper component can rotate around the lower component to enable convenient sharing of the gem microscope by a number of users. The base structure includes an electrical coupler assembly that maintains an electrical connection (for the gem microscope power supplies) throughout rotation of the gem microscope.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: March 7, 2006
    Assignee: Gemological Institute of America, Inc.
    Inventors: Howard Pomerantz, Sherman Gingerella, Derwin Fritts
  • Gem microscope having a swivel base and a stationary power cord
    Publication number: 20050094259
    Abstract: A gem microscope includes a base structure that supports the microscope stage, focus column, and optical head. The base structure includes a lower component that receives a power cord; the lower component and the power cord remain stationary when the gem microscope is in use. The base structure also includes an upper component rotatably coupled to the lower component. The upper component can rotate around the lower component to enable convenient sharing of the gem microscope by a number of users. The base structure includes an electrical coupler assembly that maintains an electrical connection (for the gem microscope power supplies) throughout rotation of the gem microscope.
    Type: Application
    Filed: September 7, 2004
    Publication date: May 5, 2005
    Inventors: Howard Pomerantz, Sherman Gingerella, Derwin Fritts
  • Gem microscope with portability kit
    Publication number: 20050083569
    Abstract: A gem microscope according to the invention includes a focus column, a stage, and a quick disconnect mechanism that facilitates removable coupling of the focus column to the stage. The focus column and the stage have compatible features that establish the proper mounting plane and lateral alignment of the focus column relative to the stage. In the example embodiment, the quick disconnect mechanism includes a threaded element on the focus column and a compatibly threaded thumbwheel that rotates within the stage to connect/disconnect the focus column to/from the stage.
    Type: Application
    Filed: September 7, 2004
    Publication date: April 21, 2005
    Inventors: Howard Pomerantz, Sherman Gingerella, Derwin Fritts