×

Adapter for attachment of a supplementary tool

  • US 5,058,909 A
  • Filed: 01/24/1990
  • Issued: 10/22/1991
  • Est. Priority Date: 02/01/1989
  • Status: Expired due to Fees
First Claim
Patent Images

1. An adapter for holding a grinding tool in a portable grinding machine of the type having:

  • a gear head;

    a hollow spindle arranged within said gear head and being drivingly connected to a drive motor and havinga central recess, defining a longitudinal axis and having an upper section and a lower section, said lower section being designed as a positive-connection part, anda counterflange situated at a lower end of said lower section;

    spring means arranged within said bore and supported thereby;

    a draw spindle being axially displaceable within said upper section of said hollow spindle and resting above said spring means, said draw spindle further having receiving means facing said spring means;

    manual actuating means, arranged on said gear head, for axially displacing said draw spindle against a compression force of said spring means;

    said adapter having a threaded pin for securing a grinding tool thereon by means of an attachment nut, said adapter further comprising;

    a flange being axially displaceable within said lower section of said hollow spindle, and having a positive-connection counterpart, said positive-connection counterpart engageable with said positive-connection part of said lower section of said hollow spindle, said flange further having a flange plate facing said counterflange of said hollow spindle lower section, and having an axial opening, anda bolt having an upper portion designed as a holding element to be received within said receiving means for axially holding said bolt with respect to said draw spindle, an intermediate portion extending through said opening of said flange, and a lower portion comprising said threaded pin for receiving said grinding tool attachment nut;

    wherein said draw spindle is displaceable by said manual actuating device between an assembly position for assembly or detachment of said adapter, and a secured position for securing said adapter; and

    wherein said flange in said secured position is pressed by said spring means against said counterflange, thereby securing said bolt against rotation and against axial movement in the direction of said receiving means.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×