Patents by Inventor Edward H. Gervais

Edward H. Gervais 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).

  • Internally generated rotor set for low viscosity and abrasive metering applications
    Patent number: 6889871
    Abstract: An internal gear set comprising an inner rotor having a number of radially projecting cylindrical tooth members engaging a conjugate internally toothed outer rotor. The latter has one more tooth than there are tooth members on the inner rotor and is mounted eccentrically to the inner rotor so that the rotors move conjugately relative to one other.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: May 10, 2005
    Assignee: Sealed Air Corporation
    Inventors: Edward H. Gervais, Souheil Eldanaf
  • Lubrication pump for inter-axle differential
    Patent number: 6702703
    Abstract: An inter-axle differential assembly having a lubrication pump is provided. The pump is disposed between the input and output shafts of the differential within a bore defined by a side gear coupled to or integral with the output shaft. The pump includes a housing that defines first and second ports and includes an arcuate groove in a radially outer surface. A pin extends radially inwardly from the side gear and is received within the groove. The groove and pin cooperate to enable rotation of the entire pump relative to the side gear and to thereby exchange the positions of the two ports. In this manner, the assembly provides a reversible pump that provides lubricant only during relative rotation between the input and output shafts of the differential.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: March 9, 2004
    Assignee: Dana Corporation
    Inventors: Edward H. Gervais, III, Dale Lee Kwasniewski, James Foltan Ziech, Lawrence Paul Wagle
  • Internally generated rotor set for low viscosity and abrasive metering applications
    Publication number: 20030212153
    Abstract: An internal gear set comprising an inner rotor having a number of radially projecting cylindrical tooth members engaging a conjugate internally toothed outer rotor. The latter has one more tooth than there are tooth members on the inner rotor and is mounted eccentrically to the inner rotor so that the rotors move conjugately relative to one other.
    Type: Application
    Filed: June 5, 2003
    Publication date: November 13, 2003
    Applicant: Sealed Air Corporation (US)
    Inventors: Edward H. Gervais, Souheil Eldanaf
  • Internally generated rotor set for low viscosity and abrasive metering applications
    Patent number: 6617367
    Abstract: An internal gear set comprising an inner rotor having a number of radially projecting cylindrical tooth members engaging a conjugate internally toothed outer rotor. The latter has one more tooth than there are tooth members on the inner rotor and is mounted eccentrically to the inner rotor so that the rotors move conjugately relative to one other.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: September 9, 2003
    Assignee: Sealed Air Corporation
    Inventors: Edward H. Gervais, Souheil Eldanaf
  • Lubrication pump for inter-axle differential
    Publication number: 20030032516
    Abstract: An inter-axle differential assembly having a lubrication pump is provided. The pump is disposed between the input and output shafts of the differential within a bore defined by a side gear coupled to or integral with the output shaft. The pump includes a housing that defines first and second ports and includes an arcuate groove in a radially outer surface. A pin extends radially inwardly from the side gear and is received within the groove. The groove and pin cooperate to enable rotation of the entire pump relative to the side gear and to thereby exchange the positions of the two ports. In this manner, the assembly provides a reversible pump that provides lubricant only during relative rotation between the input and output shafts of the differential.
    Type: Application
    Filed: July 1, 2002
    Publication date: February 13, 2003
    Inventors: Edward H. Gervais, Dale Lee Kwasniewski, James Foltan. Ziech, Lawrence Paul Wagle
  • High torque low speed hydraulic motor with rotary valving
    Patent number: 4563136
    Abstract: A hydraulic torque motor and more particularly a hydraulic torque motor 10 of the internally generated rotor family having a rotatable inner rotor 24 and an orbital outer rotor 26 and which includes an improved rotary valve means 66 for the delivery and exhaust of hydraulic pressure fluid thereto and therefrom.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: January 7, 1986
    Assignee: Parker-Hannifin Corporation
    Inventors: Edward H. Gervais, Carle A. Middlekauff, Donald C. Wescott