Patents by Inventor Abraham M. Kearl

Abraham M. Kearl 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).

  • Wheelchair advantage mobility system
    Patent number: 8087684
    Abstract: A wheelchair propulsion and braking system (10) includes at least one clutch engagement disk rotatably couplable to a wheelchair frame (14). The clutch engagement disk (32) includes a gear (38) that is rotatable with the clutch engagement disk (32), and a drive chain (40) disposed around the gear (38). A drive wheel (50) is rotatably attachable to a wheel (22) of the wheelchair (12), and operatively attachable to the drive chain (40). The system also includes at least one lever arm (60) that is rotatably couplable to the wheelchair frame (14). The at least one lever arm (60) includes a handle (62) operatively coupled to an upper end (64) of the lever arm (60). The handle (62) is oriented in an accessible position during use. A pair of calipers (70) is operatively coupled to each lever arm (60), and engageable with the at least one clutch engagement disk (32). An actuator (80) is operatively coupled to the handle (62) to actuate the calipers (70), and to engage the clutch engagement disk (32).
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: January 3, 2012
    Assignee: University of Utah Research Foundation
    Inventors: Donald S. Bloswick, Jeffrey R. Clark, Miguel Gallegos, Brian J. Horne, Abraham M. Kearl, Ryosuke Osawa
  • Wheelchair advantage mobility system
    Publication number: 20090295119
    Abstract: A wheelchair propulsion and braking system (10) includes at least one clutch engagement disk rotatably couplable to a wheelchair frame (14). The clutch engagement disk (32) includes a gear (38) that is rotatable with the clutch engagement disk (32), and a drive chain (40) disposed around the gear (38). A drive wheel (50) is rotatably attachable to a wheel (22) of the wheelchair (12), and operatively attachable to the drive chain (40). The system also includes at least one lever arm (60) that is rotatably couplable to the wheelchair frame (14). The at least one lever arm (60) includes a handle (62) operatively coupled to an upper end (64) of the lever arm (60). The handle (62) is oriented in an accessible position during use. A pair of calipers (70) is operatively coupled to each lever arm (60), and engageable with the at least one clutch engagement disk (32). An actuator (80) is operatively coupled to the handle (62) to actuate the calipers (70), and to engage the clutch engagement disk (32).
    Type: Application
    Filed: April 26, 2006
    Publication date: December 3, 2009
    Applicant: University of Utah Research Foundation
    Inventors: Donald S. Bloswich, Jeffrey R. Clark, Miguel Gallegos, Brian J. Horne, Abraham M. Kearl, Ryosuke Osawa