公开(公告)号：US20160256915A1

公开(公告)日：2016-09-08

申请号：US15028839

申请日：2014-07-30

Applicant: M. H. CENTER LIMITED

Inventor： Susumu AOYAMA ,  Tsuyoshi AOYAMA

IPC: B21H3/08 ,  F16H21/20 ,  F04B49/12 ,  F01B29/12 ,  F01B31/26 ,  B23G7/00 ,  F02B75/04

CPC classification number: B21H3/08 ,  B21H5/025 ,  B23G1/02 ,  B23G7/00 ,  F01B1/0686 ,  F01B29/12 ,  F01B31/26 ,  F02B75/047 ,  F02D15/02 ,  F04B9/04 ,  F04B49/125 ,  F04B53/006 ,  F16H21/20

Abstract: There is provided an R-θ table apparatus which freely movies one table on a plane in the forward-and-rearward and leftward-and-rightward directions and in the rotational direction. The R-θ table apparatus changes a horizontal distance between a center line of a main axis of a driving apparatus and the action point by elevating an elevating base, and a table is moved to an arbitrary position without rotating along a guide member.

Abstract translation: 提供了一种R-θ台装置，其在前后左右方向和旋转方向上自由地在一平面上拍摄一张桌子。 R-θ台装置通过提升升降基座来改变驱动装置的主轴的中心线与作用点之间的水平距离，并且将台移动到任意位置而不沿引导构件旋转。

公开(公告)号：US2297707A

公开(公告)日：1942-10-06

申请号：US34884940

申请日：1940-07-31

Applicant: SULLIVAN MACHINERY CO

Inventor： JOY JOSEPH F

IPC: F01B1/06

CPC classification number: F01B1/0686 ,  F01B1/0658 ,  Y10T74/18264

公开(公告)号：US20240200454A1

公开(公告)日：2024-06-20

申请号：US18541945

申请日：2023-12-15

Applicant: Danfoss Power Solutions GmbH & Co OHG

Inventor： Chris Shrive ,  Christian Feller ,  Matthias Liermann

IPC: F01B1/06 ,  F01B25/02

CPC classification number: F01B1/0686 ,  F01B1/0675 ,  F01B25/02

Abstract: A hydraulic control circuit for a hydraulic motor operable at least at two displacements, having a proportional speed control valve with a control valve spool continuously moveable by means of a force generated by a pilot pressure being controlled by a continuously, electrically adjustable pilot valve having an electrical actuator, wherein the control valve spool is moveable between a full-torque end position, a reduced-torque end position, and at least one intermediate position. A time related control current function is provided for controlling the current applied to the electrical actuator for controlling the pilot pressure including a pre-current portion with a constant non-zero current and a current ramp portion during which the current is raised or lowered continuously from a ramp starting current level to an intermediate current level. The current is changed abruptly to a switching current level at the end of the current ramp portion for allowing the movement of the speed control valve spool from one of the two end positions via the at least one intermediate switching position into the other end position.

公开(公告)号：US3131604A

公开(公告)日：1964-05-05

申请号：US18723562

申请日：1962-04-13

Applicant: ROBERT E HATCH

Inventor： ORSHANSKY JR ELIAS

IPC: F01B1/06 ,  F03C1/40

CPC classification number: F03C1/0457 ,  F01B1/0606 ,  F01B1/0613 ,  F01B1/0668 ,  F01B1/0686 ,  F01B1/0696 ,  Y10T74/1828

公开(公告)号：US3279389A

公开(公告)日：1966-10-18

申请号：US34527864

申请日：1964-02-17

Applicant: LA MAIDA PLINE R

Inventor： LA MAIDA PLINE R

IPC: F01B1/06

CPC classification number: F01B1/0693 ,  F01B1/0668 ,  F01B1/0686

公开(公告)号：US1785736A

公开(公告)日：1930-12-23

申请号：US29624228

申请日：1928-07-30

Applicant: HESS JOHN P

Inventor： HESS JOHN P

IPC: F01B1/06

CPC classification number: F01B1/0686 ,  F01B1/0648 ,  Y10T74/2102 ,  Y10T74/2107