Patents by Inventor Nicolaas Kollaard

Nicolaas Kollaard 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).

  • Clutch actuator unit
    Patent number: 6848557
    Abstract: A clutch actuator unit comprises a housing (8, 9), a screw mechanism and an actuator head which at one end engages the screw mechanism (1, 2) and at the other end has an actuating end (18), which actuator head (16) can be displaced in axial direction by the screw mechanism upon driving the screw mechanism. The actuating end (18) of the actuator head (16) is displaceable in transverse direction with respect to the screw mechanism as well.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: February 1, 2005
    Assignee: SKF Engineering and Research Centre B.V.
    Inventors: Hendrikus Jan Kapaan, Jacobus Zwarts, Bernardus Gerardus Van Leeuwen, Nicolaas Kollaard, Alexander Molenaar, Frédéric Ponson
  • Clutch actuator unit
    Publication number: 20040020741
    Abstract: A clutch actuator unit comprises a housing (8, 9), a screw mechanism and an actuator head which at one end engages the screw mechanism (1, 2) and at the other end has an actuating end (18), which actuator head (16) can be displaced in axial direction by the screw mechanism upon driving the screw mechanism. The actuating end (18) of the actuator head (16) is displaceable in transverse direction with respect to the screw mechanism as well.
    Type: Application
    Filed: December 11, 2002
    Publication date: February 5, 2004
    Inventors: Hendrikus Jan Kapaan, Jacobus Zwarts, Bernardus Gerardus Van Leeuwen, Nicolaas Kollaard, Alexander Molenaar, Frederic Ponson
  • Grease retainer and taper roller bearing having same
    Patent number: 5803616
    Abstract: A taper roller bearing comprises an inner ring and an outer ring having tapered raceways, a bearing space in which tapered rollers are arranged, as well as a cage for mutually spacing the rollers. A grease retainer is connected to the outer ring. The grease retainer is situated next to the inner ring part having the smallest raceway diameter. The retainer comprises a ring-shaped channel in the inner space of which grease can be accommodated. The channel has apertures for communicating the channel inner space with the bearing space.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: September 8, 1998
    Assignee: SKF Industrial Trading & Development Company B.V.
    Inventors: Mats Johan Persson, Nicolaas Kollaard
  • Hub unit with connection by means of cup spring
    Patent number: 5720530
    Abstract: A hub unit comprises a wheel bearing and a driving axle stub which is situated in a correspondingly shaped, concentric opening in the rotatable ring of the wheel bearing, and in the direction of rotation interacts by unround shapes with the ring which driving axle stub has an axle end projecting from the opening in the ring. The axle end interacts with the inner periphery of a cup spring whose outer periphery is supported under pre-tension on the ring. The cup spring is accommodated in a peripheral groove provided in the axle end.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: February 24, 1998
    Assignee: SKF Industrial Trading and Development Company B.V.
    Inventors: Jozef Johannes Holsnijders, Nicolaas Kollaard