Intermittent Unidirectional Rotation Of Advance Element Patents (Class 173/143)
  • VIBRATORY MECHANISM FOR A PILE DRIVER AND A PILE DRIVER
    Publication number: 20110240323
    Abstract: A vibratory mechanism for a pile driver com-prises a static part and a dynamic part. The dynamic part is movable with respect to the static part. The static part is provided with a drivable crankshaft and the dynamic part comprises a housing and a vibration member. The vibration member is drivably coupled to the crankshaft through a connecting rod and linearly movable with respect to the housing in a direction of vibration. The housing is resiliently coupled to the vibration member.
    Type: Application
    Filed: December 2, 2009
    Publication date: October 6, 2011
    Applicant: Fistuca B.V.
    Inventor: Jasper Stefan Winkes
  • Coupling for rotary-vibratory drills
    Patent number: 5409070
    Abstract: A rotary-vibratory drill coupling has a first component with a plurality of spaced-apart members. Each member has a pair of opposed, spaced-apart faces defining a slot therebetween. A second component has a plurality of angularly spaced-apart blade-like projections extending radially thereon. Each of the projections is slidably received between one pair of the opposed, spaced-apart faces on the first component. Preferably there are anti-friction linings between the projections and the faces.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: April 25, 1995
    Inventor: Raymond J. Roussy