Patents by Inventor Alexander Holstein

Alexander Holstein 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).

  • Centering device for centering a chuck on a rotating spindle and associated locking device
    Patent number: 9283645
    Abstract: The invention concerns a centring device for centring a chuck on a securing portion in particular of a rotating spindle of a machine, wherein a tapered portion corresponding to a mating tapered portion on the chuck side is provided on the securing portion in such a way that the tapered portion and/or the mating tapered portion is/are formed so as to yield elastically in the axial direction such that, after the tapered portion comes into contact with the mating tapered portion, the chuck can be moved further in the axial direction, at least to a limited extent, as a result of an axial pulling-in force until the chuck comes to lie against a stop on the securing portion side. The invention likewise concerns an associated locking device.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: March 15, 2016
    Assignee: SCHUNK GMBH & CO. KG SPANN-UND GREIFTECHNIK
    Inventors: Philipp Schraeder, Alexander Holstein
  • Securing device for securing a chuck on a rotating spindle
    Patent number: 9242325
    Abstract: The invention concerns a securing device for securing a chuck, in particular a power-operated chuck, on a rotating spindle of a machine, wherein a rotating element and at least one chucking-slide assembly are provided in a main body in such a way that, when the rotating element turns, the chucking-slide assemblies change their radial position such that, in a chucking position, they force the chuck against the securing device in the axial direction.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: January 26, 2016
    Assignee: SCHUNK GMBH & CO. KG SPANN-UND GREIFTECHNIK
    Inventors: Philipp Schraeder, Alexander Holstein
  • CENTRING DEVICE FOR CENTRING A CHUCK ON A ROTATING SPINDLE AND ASSOCIATED LOCKING DEVICE
    Publication number: 20130093148
    Abstract: The invention concerns a centring device for centring a chuck on a securing portion in particular of a rotating spindle of a machine, wherein a tapered portion corresponding to a mating tapered portion on the chuck side is provided on the securing portion in such a way that the tapered portion and/or the mating tapered portion is/are formed so as to yield elastically in the axial direction such that, after the tapered portion comes into contact with the mating tapered portion, the chuck can be moved further in the axial direction, at least to a limited extent, as a result of an axial pulling-in force until the chuck comes to lie against a stop on the securing portion side. The invention likewise concerns an associated locking device.
    Type: Application
    Filed: March 16, 2011
    Publication date: April 18, 2013
    Applicant: SCHUNK GMBH & CO. KG SPANN- UND GREIFTECHNIK
    Inventors: Philipp Schraeder, Alexander Holstein
  • SECURING DEVICE FOR SECURING A CHUCK ON A ROTATING SPINDLE
    Publication number: 20130075984
    Abstract: The invention concerns a securing device for securing a chuck, in particular a power-operated chuck, on a rotating spindle of a machine, wherein a rotating element and at least one chucking-slide assembly are provided in a main body in such a way that, when the rotating element turns, the chucking-slide assemblies change their radial position such that, in a chucking position, they force the chuck against the securing device in the axial direction.
    Type: Application
    Filed: March 16, 2011
    Publication date: March 28, 2013
    Applicant: SCHUNK GMBH & CO. KG SPANN- UND GREIFTECHNIK
    Inventors: Philipp Schraeder, Alexander Holstein