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    • 11. 发明公开
    • Improvements in drills
    • 演习的改进
    • EP0467582A2
    • 1992-01-22
    • EP91306252.7
    • 1991-07-10
    • Payne, David Patrick
    • Payne, David Patrick
    • B23B51/00B27G15/02B28D1/14
    • B23B51/0045Y10T82/12Y10T408/85884
    • The invention relates to improvements in drills for undercutting holes and in particular to expansible drills. The drill according to the invention comprises a rotatable tubular drill body (11) having an axial bore, at least one radially extending arm (16) attached by hinge means at one end to the drill body (11) such that the arm is pivotal radially outwards, cutting means formed in the arm, guide means for moving the arm radially outwards, said guide means comprising a non-rotating shaft (22), and means (23) for moving the shaft axially relative to the drill body (11) towards said one end, so as to cause the arm to pivot radially outwards.
    • 本发明涉及对底切孔的钻头的改进,特别涉及可膨胀钻头。 根据本发明的钻具包括具有轴向孔的可旋转的管状钻体(11),至少一个径向延伸臂(16),所述至少一个径向延伸臂在一端通过铰链装置连接到钻体(11),使得臂径向枢转 向外移动,形成在臂中的切割装置,用于使臂径向向外移动的导向装置,所述导向装置包括非旋转轴(22)和用于使轴相对于钻体(11)轴向移动的装置(23) 所述一端,以便使该臂径向向外枢转。
    • 14. 发明公开
    • Improvements in drills
    • Bohrer的。
    • EP0408379A1
    • 1991-01-16
    • EP90307675.0
    • 1990-07-13
    • Payne, David Patrick
    • Payne, David Patrick
    • B23B29/034B28D1/14
    • E21B10/58B23B51/0045E21B10/32E21B10/56
    • A drill (10) which is expansible and retractable for undercutting holes particularly in building materials comprises a drill body (11), at least one radially extending arm (16) attached at one end to the drill body, cutting means (18) formed at an end of said arm remote from the end attached to the drill body, and guide means (26, 27) for moving said arm radially outward, said guide means being movable axially relative to said drill body. That the arm is attached to the drill body by hinge means (19) such that the arm is pivotable radially outwards. The guide means comprise a shank portion (26) and a frustoconical wedge (27). Means (20) are provided for holding the arm in contact with the guide means and means for moving the guide means axially relative to the drill, wherein the arm is caused to pivot radially outwards forming an increasing cutting diameter as said arm moves along the divergent surface of the frustoconical wedge of the guide means.
    • 特别是在建筑材料中用于底切孔的可膨胀和伸缩的钻头(10)包括钻体(11),至少一个径向延伸的臂(16),其一端连接到钻头体上,切割装置(18)形成在 所述臂的端部远离附接到钻体的端部,以及用于使所述臂径向向外移动的引导装置(26,27),所述引导装置可相对于所述钻体轴向移动。 臂通过铰链装置(19)附接到钻体,使得臂可径向向外枢转。 引导装置包括柄部分(26)和截头圆锥形楔形物(27)。 装置(20)被设置成用于保持臂与引导装置接触,并且用于使引导装置相对于钻头轴向地移动的装置,其中使臂被径向向外枢转,当所述臂沿着发散体移动时形成增加的切割直径 引导装置的截头圆锥形楔的表面。
    • 15. 发明公开
    • Improvements in drills
    • Bohrer的
    • EP0722801A2
    • 1996-07-24
    • EP96300386.8
    • 1996-01-19
    • Payne, David Patrick
    • Payne, David Patrick
    • B23B51/00
    • B23B51/0045Y10T82/12Y10T408/85884Y10T408/8595Y10T408/906
    • The invention relates to improvements in drills for drilling and undercutting holes and in particular to an expansible drill. Such a drill comprises a rotatable tubular drill body having bore cutting means at one end thereof, at least one undercutting arm located within a slot in the drill body attached by hinge means such that at least a part of the arm is pivotal radially outwards, guide means for moving the arm radially outwards, said guide means comprising a shaft which is located within the drill body and constrained to rotate therewith, the drill further comprising locking means for selectively preventing or allowing the shaft to move axially relative to the drill body as force is applied to an end of the shaft.
    • 本发明涉及用于钻孔和底切孔的钻头的改进,特别涉及可膨胀钻头。 这种钻头(10)包括可旋转的管状钻体(11),其在其一端具有孔切割装置(14),至少一个底切臂(17),位于钻体内的槽(16)内,铰链装置 使得所述臂的至少一部分径向向外枢转,用于使所述臂径向向外移动的引导装置(12),所述引导装置包括位于所述钻体内并被约束以随其旋转的轴,所述钻头还包括锁定 用于当力施加到所述轴的端部时,用于选择性地防止或允许所述轴相对于所述钻体轴向移动的装置(30,40,41)。
    • 18. 发明专利
    • A method and a system and apparatus for coupling an open heating circuit to a closed heating circuit
    • IE20170068A1
    • 2017-11-29
    • IE20170068
    • 2017-03-31
    • DAVID PATRICK REA
    • DAVID PATRICK REA
    • F24D19/00F24D3/00F24H1/00
    • A heating system (1) comprises an open heating circuit (3) comprising a solid fuel stove (10) and a closed heating circuit (5) comprising a burner boiler unit (32) connected together by a heat exchanger (70) in which a first heat transfer fluid of the open heating circuit (3) is separated from a second heat transfer fluid of the closed heating circuit (5), and by a domestic hot water buffer tank (18). The buffer tank (18) comprises a primer coil (16) through which heat is leaked from the open heating circuit (3) into domestic water in the buffer tank (18) and a secondary heating coil (20) for heating the domestic water in the buffer tank (18) from the closed heating circuit (5). First and second pumps (73, 90) which control the flow of the first and second heat transfer fluids, respectively, through the heat exchanger (70) are operated in response to the temperature of the first heat transfer fluid in the open heating circuit (3) monitored by the thermostat (72) exceeding 65°C for transferring heat from the first heat transfer fluid to the second heat transfer fluid, and to draw the first heat transfer fluid through the primary coil (16) via a venture injector Tee connector (80) in the first closed heating circuit to sink heat from the first heat transfer fluid to the domestic water in the buffer tank (18).