Andrew P Dretzka

age ~58

from New Berlin, WI

Also known as:
  • Andrew Dretzka
  • Andy Dretzka
Phone and address:
12710 Green Briar Rd, Waukesha, WI 53151
4144252244

Andrew Dretzka Phones & Addresses

  • 12710 Green Briar Rd, New Berlin, WI 53151 • 4144252244
  • 5573 Illinois Ave, Cudahy, WI 53110 • 4147698942
  • 12710 W Greenbriar Ln, New Berlin, WI 53151 • 2624252244

Work

  • Position:
    Precision Production Occupations

Education

  • Degree:
    Associate degree or higher

Us Patents

  • Bearing Retainer Assembly

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  • US Patent:
    55909680, Jan 7, 1997
  • Filed:
    Sep 18, 1995
  • Appl. No.:
    8/529320
  • Inventors:
    Andrew P. Dretzka - Cudahy WI
  • Assignee:
    Harnischfeger Corporation - Brookfield WI
  • International Classification:
    F16C 1936
  • US Classification:
    384563
  • Abstract:
    Apparatus comprising an inner member having an axis and an axially extending outer surface, an outer member having an axially extending inner surface, the inner and outer members being rotatable relative to each other about the axis, a bearing between the inner and outer surfaces, the bearing having a radially extending bearing surface, and a bearing retainer assembly including a first retainer which engages the bearing surface and which has a first tapered surface, a second retainer having a second tapered surface engaging the first tapered surface, an axially extending retainer surface engaging one of the inner and outer members, and a radially extending retainer surface, each of the first and second tapered surfaces tapering radially away from the one of the inner and outer members and axially away from the bearing, a spring engaging the retainer surface, and a cap which is fixed to the one of the inner and outer members and which engages the spring so that the spring is compressed between the cap and the retainer surface and exerts a force on the retainer surface whereby the second retainer is wedged between the first retainer and the one of the inner and outer members.
  • Dragline With Cantilevered Side-Access Dump Block

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  • US Patent:
    56364601, Jun 10, 1997
  • Filed:
    Sep 18, 1995
  • Appl. No.:
    8/529868
  • Inventors:
    Andrew P. Dretzka - Cudahy WI
  • Assignee:
    Harnischfeger Corporation - Brookfield WI
  • International Classification:
    B66D 304
  • US Classification:
    37397
  • Abstract:
    A dragline comprising a main housing, a bucket hoist mechanism mounted on the housing, a bucket drag mechanism mounted on the main housing, a moving mechanism for moving the main housing over the ground, a boom which is supported on the main housing and which has an upper end, a bucket, a hoist rope having one end connected to the bucket hoist mechanism, extending over the sheave, and having an opposite end, a drag rope extending between the bucket and the bucket drag mechanism, a dump block including a frame having a main portion connected to the opposite end of the hoist rope, and a cantilevered spindle extending from the main portion, and a dump block sheave mounted on the spindle for rotation about a sheave axis, and a dump rope extending over the dump block sheave and having one end connected to the drag rope and an opposite end connected to the bucket, such that the dump rope can be removed from the sheave in the direction away from the frame main portion.
  • Assembly And Method For Tooth Tip Retention

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  • US Patent:
    54108268, May 2, 1995
  • Filed:
    Mar 1, 1993
  • Appl. No.:
    8/024393
  • Inventors:
    Darryl R. Immel - Waterford WI
    Andrew P. Dretzka - Cudahy WI
    Harvey J. Kallenberger - Wind Lake WI
  • Assignee:
    Harnischfeger Corporation - Milwaukee WI
  • International Classification:
    E02F 0928
  • US Classification:
    37457
  • Abstract:
    A digging tooth assembly has first and second wedged members retaining a digging tooth tip on a tooth base. The improvement comprises a tension member, e. g. , a bolt, coupled to the first member and engaging the second member. The bolt has an adjustable effective length so that the first member can be drawn into wedged engagement with the second member. Other aspects of the invention involve a method for assembling a digging tooth assembly having an apertured tooth tip on an apertured, supporting tooth base. The method includes the steps of inserting a first wedge-like member into the aperture, inserting a second wedge-like member into the aperture and drawing the first member upward into wedged engagement with the second member.
  • Bucket Dump Block

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  • US Patent:
    53984331, Mar 21, 1995
  • Filed:
    Feb 8, 1993
  • Appl. No.:
    8/014502
  • Inventors:
    Andrew P. Dretzka - Cudahy WI
  • Assignee:
    Harnischfeger Corporation - Brookfield WI
  • International Classification:
    E02F 358
  • US Classification:
    37399
  • Abstract:
    A bucket dump block, used on dragline buckets, has side frames and a rotatable rope-guiding sheave. In the improvement, each side frame has a separate ring-like support section extending toward the other side frame and abutting the support section of such other side frame. The sheave is supported by and rotates about such support sections. The sheave rides on an annular anti-friction member retained on a sleeve into which the support sections are press-fitted. The dump block (which is devoid of provisions for lubrication) has a minimum number of parts and is easy to manufacture and repair.

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