公开(公告)号：US2533043A

公开(公告)日：1950-12-05

申请号：US6417548

申请日：1948-12-08

Applicant: LANDIS TOOL CO

Inventor： PRICE RALPH E

IPC: B24B47/28 ,  F16H57/12

CPC classification number: F16H57/12 ,  B24B47/28 ,  Y10T74/19623

公开(公告)号：US2243410A

公开(公告)日：1941-05-27

申请号：US22077738

申请日：1938-07-22

Applicant: LANDIS TOOL CO

Inventor： BALSIGER HAROLD E ,  PRICE RALPH E

IPC: B24B19/12

CPC classification number: B24B19/12

公开(公告)号：US2220490A

公开(公告)日：1940-11-05

申请号：US5308635

申请日：1935-12-05

Applicant: LANDIS TOOL CO

Inventor： OTT CONRAD L ,  PRICE RALPH E

IPC: B24B5/42

CPC classification number: B24B5/42

公开(公告)号：US3872738A

公开(公告)日：1975-03-25

申请号：US39988873

申请日：1973-09-24

Applicant: LANDIS TOOL CO

Inventor： PRICE RALPH E ,  BRICKER ROBERT E

IPC: B23Q15/013 ,  B23Q5/48 ,  B23Q5/50 ,  B24B53/00 ,  F16H37/00 ,  G05B19/23 ,  F16H1/18 ,  F16H35/06

CPC classification number: G05B19/238 ,  B23Q5/48 ,  B23Q5/50 ,  F16H37/00 ,  F16H2700/02 ,  Y10T74/18624 ,  Y10T74/19535

Abstract: A machine tool comprising a machine element including a feed screw, means for displacing the machine element including a first stepping motor including a drive shaft, a second stepping motor including a drive shaft, means for interconnecting the drive shafts and the feed screw having means for rotating the feed screw in a first direction at a rate directly related to the combined rates of rotation of the drive shafts when the drive shafts rotate in a first direction, and means for rotating the feed screw in the first direction at a rate directly related to the difference between the rates of rotation of the drive shafts when one of the drive shafts is rotated in the first direction at a first rate and the second of the drive shafts is rotated in a second reverse direction at a second rate less than the first rate, means for selectively rotating the first and second stepping motors in the first direction to advance the machine element at a first rate, and means for selectively rotating the first stepping motor in the first direction at the first rate and for selectively rotating the second stepping motor in the second direction at the second rate to advance the machine element at a second slower feed rate.

公开(公告)号：US3407541A

公开(公告)日：1968-10-29

申请号：US48715665

申请日：1965-09-14

Applicant: LANDIS TOOL CO

Inventor： PRICE RALPH E ,  BALSIGER HAROLD E

IPC: B24B19/10

CPC classification number: B24B19/10

公开(公告)号：US3183631A

公开(公告)日：1965-05-18

申请号：US26024863

申请日：1963-02-21

Applicant: LANDIS TOOL CO

Inventor： PRICE RALPH E ,  TOLBERT CHARLES E

IPC: B24B47/04 ,  B24B47/06 ,  B24B47/20 ,  F15B11/00 ,  F15B11/02 ,  F15B21/08

CPC classification number: F15B21/08 ,  B24B47/04 ,  B24B47/06 ,  B24B47/203 ,  B24B47/206 ,  F15B11/00 ,  F15B11/02

公开(公告)号：US3145508A

公开(公告)日：1964-08-25

申请号：US26024763

申请日：1963-02-21

Applicant: LANDIS TOOL CO

Inventor： PRICE RALPH E

IPC: B24B5/01

CPC classification number: B24B5/01

公开(公告)号：US3109269A

公开(公告)日：1963-11-05

申请号：US3026460

申请日：1960-05-19

Applicant: LANDIS TOOL CO

Inventor： BALSIGER HAROLD E ,  PRICE RALPH E

IPC: B23Q17/22 ,  B24B5/14

CPC classification number: B24B5/14 ,  B23Q17/22

公开(公告)号：US3105404A

公开(公告)日：1963-10-01

申请号：US2500060

申请日：1960-04-27

Applicant: LANDIS TOOL CO

Inventor： PRICE RALPH E

IPC: B23B33/00 ,  B24B41/06 ,  C07C275/70 ,  H01J5/40 ,  H01K1/46

CPC classification number: H01K1/46 ,  B23B33/00 ,  B24B41/062 ,  C07C275/70 ,  H01J5/40 ,  H01J2893/0035 ,  Y10T82/26

公开(公告)号：US3054227A

公开(公告)日：1962-09-18

申请号：US127860

申请日：1960-01-08

Applicant: LANDIS TOOL CO

Inventor： PRICE RALPH E

IPC: B24B5/30 ,  F16H1/22 ,  F16H57/12

CPC classification number: B24B5/30 ,  F16H1/225 ,  F16H57/12 ,  F16H2057/121