Patents by Inventor Alexander Ellin

Alexander Ellin 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).

  • Scale reading apparatus
    Publication number: 20050229410
    Abstract: A rotary ring system for use in scale reading apparatus comprises a rotary ring (12), provided with scale marks on its surface and at least one intermediate member (24). The at least one intermediate member (24) is fitted between the rotary ring (12) and the machine part (10) on which the rotary ring is to be mounted. Application of a force to the at least one intermediate member adjusts the effective radius of the rotary ring. The at least one intermediate member may be tangentially compliant.
    Type: Application
    Filed: July 16, 2003
    Publication date: October 20, 2005
    Applicant: Renishaw PLC
    Inventors: David McMurtry, James Henshaw, Alexander Ellin
  • Substrate treatment device and method and encoder scale treated by this method
    Publication number: 20050079499
    Abstract: The invention provides a substrate treatment method and apparatus to produce a pattern on the substrate (10). Embodiments show a substrate (10) in the form of a rotary encoder ring (10) having a pattern of marks producable by means of a laser treatment device (122) controllable by a controller (100, 110) to produce the pattern in the correct manner whilst there is continuous relative displacement between the ring (10) and the laser treatment device (122).
    Type: Application
    Filed: November 15, 2002
    Publication date: April 14, 2005
    Inventors: Alexander Ellin, James Henshaw, David McMurtry
  • Laser marking
    Publication number: 20050045586
    Abstract: A method and apparatus is disclosed for producing precision marks (28) for a metrological scale in the form of a stainless steel ribbon (10). A laser (21) is used to produce ultra-short pulses, which have a fluence at the ribbon such that ablation takes place. The laser light can be scanned via scanner (25) and the pitch of the marks (28) can be controlled. The ablative technique causes little thermal input and improves the accuracy of the scale.
    Type: Application
    Filed: January 20, 2003
    Publication date: March 3, 2005
    Inventors: Alexander Ellin, James Henshaw