Eugene M Pendolino, 86104 Treasure Lk, Du Bois, PA 15801

4915455, Apr 10, 1990

Nov 9, 1988

7/269381

Michael L. O'Neill - Lucinda PA
Stephen P. Moore - Sandy Lake PA
Eugene F. Pendolino - Franklin PA

Joy Technologies Inc. - Pittsburgh PA

E21C 3518

299 91

Apparatus for supporting a cutting bit having an extended shank on a rotatable cutting drum is provided. The support apparatus includes a bit holder having an upper body portion and a shank portion and a generally rectangular mounting base having rear, side and front members. The upper body of the bit holder includes a bore for receiving the cutting bit shank and upper rear abutment surfaces perpendicular to the bit axis. The shank of the bit holder has a lower rear abutment surface parallel to the bit axis and a threaded bore which extends into the shank intermediate the upper and lower abutment surfaces. The rear portion of the mounting base includes upper abutment surfaces perpendicular to the bit axis and a lower abutment surface parallel to the bit axis. A draw bolt passes through the rear portion of the mounting base and serves to draw the upper and lower abutment surfaces of the bit holder and mounting base, respectively, into engagement.

4607891, Aug 26, 1986

May 31, 1985

6/739945

Eugene F. Pendolino - Franklin PA
Wayne L. Edmondson - Franklin PA
Michael L. O'Neill - Lucinda PA

Joy Manufacturing Company - Pittsburgh PA

E21B 1000

299 92

A cutter bit holding assembly is disclosed. The cutter bit assembly contains a cutter bit having a shank portion and a cutter bit holder having a socket for receiving the cutter bit shank portion. Also included is a rotary locking element which is associated with the cutter bit holder and a bore adjacent the socket. The bore runs in a direction parallel the direction in which the bit holder cuts. The locking element has an offset locking portion which cooperates with an indented locking surface on the bit shank. The rotary locking element is capable of being rotated completely out of the socket bore and out of engagement with the bit shank locking surface to permit the unencumbered removal or insertion of a bit. An elastomeric element inserted along part of the bore in the cutter bit holder is utilized to prevent rotation of the locking element out of engagement with the bit shank locking surface during operation of the cutting device.

5011229, Apr 30, 1991

Feb 5, 1990

7/475063

Michael L. O'Neill - Lucinda PA
Stephen P. Moore - Sandy Lake PA
Eugene F. Pendolino - Franklin PA

Joy Technologies Inc. - Pittsburgh PA

E21C 3518

299 91

Apparatus for supporting a cutting bit having an extended shank on a rotatable cutting drum is provided. The support apparatus includes a bit holder having an upper body portion and a shank portion and a generally rectangular mounting base having rear, side and front members. The upper body of the bit holder includes a bore for receiving the cutting bit shank and upper rear abutment surfaces perpendicular to the bit axis. The shank of the bit holder has a lower rear abutment surface having horizontal and vertical areas and a threaded bore which extends into the shank intermediate the upper and lower abutment surfaces. The rear portion of the mounting base includes upper abutment surfaces perpendicular to the bit axis and a lower abutment surface having horizontal and vertical areas. A draw bolt passes through the rear portion of the mounting base and serves to draw the upper and lower abutment surfaces of the bit holder and mounting base, respectively, into engagement.