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公开(公告)号：US4997050A
公开(公告)日：1991-03-05
申请号：US454077
申请日：1989-12-21
申请人： David T. Allan
发明人： David T. Allan
摘要： A scabbler bit comprises a carrier having a body 30 with a lower face 31 formed to provide bores 32 for receipt of scabbler tips 44. The body 30 has a central bore 33 for passage of a fixing shank 34. The bore 33 is enlarged at the lower face 31 to form a recess 35 to receive the head 36 of the shank 34. The opposite face of the body 30 is formed with a counterbore 37 to receive the piston 38, the shank 34 being retained in the piston by a pin 39. Thus, axial loads on the scabbler bit are transmitted to the piston 38 via shoulder 40 of the carrier bearing on end face 41 of the piston 38, while any sideways of twisting load is resisted by the wall of the counterbore 37 bearing on the side face 42 of the piston 38.
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公开(公告)号：US4186810A
公开(公告)日：1980-02-05
申请号：US812620
申请日：1977-07-05
申请人： David T. Allan
发明人： David T. Allan
CPC分类号： E21B4/20 , E21B10/322 , E21B4/14 , E21B4/16 , E21B4/18
摘要： An undercutter comprising a slotted tubular body in which is mounted an extendable and retractable cutting head for undercutting a bore into which the tubular body is positioned and rotated. The cutting head includes a fluid-operated reciprocally movable piston, the reciprocating rate of which is determined by an annular liner positioned between the outer wall of the piston body and the inner wall of the piston cavity.
摘要翻译： 一种底切割器，其包括开槽的管状体，其中安装有可延伸和可缩回的切割头，用于底切所述管状体定位和旋转的孔。 切割头包括流体操作的可往复运动的活塞，其往复运动速率由位于活塞体的外壁和活塞腔的内壁之间的环形衬套确定。
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公开(公告)号：US4841842A
公开(公告)日：1989-06-27
申请号：US904564
申请日：1986-09-05
申请人： David T. Allan
发明人： David T. Allan
摘要： There is described apparatus for scabbling concretw which includes a hollow cylinder block having a top and bottom plate between which plates there is provided a smooth sided hollow cylindrical cylinder liner. The piston for reciprocation within the cylinder liner is also provided.
摘要翻译： 描述了一种用于防水混凝土的装置，其包括具有顶板和底板的中空圆柱块，板之间设置有平滑的中空圆柱形气缸套。 还提供了用于在气缸套内往复运动的活塞。
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公开(公告)号：US4225187A
公开(公告)日：1980-09-30
申请号：US931071
申请日：1978-08-04
申请人： David T. Allan
发明人： David T. Allan
CPC分类号： B28D1/265
摘要： A scabbler machine for breaking concrete etc. having a number of scabbling bits made up of a shank for connection to the reciprocal piston of the scabbler machine and a head provided with tungsten carbide, or like, cutting members. To ensure complete scabbling of the surface to be treated the head of the scabbling bits have portions which overlie portions of other bits so that the bits overlap one another in the direction of movement of the scabbler machine over the surface to be treated.
摘要翻译： 一种用于破碎混凝土等的破碎机，具有由用于连接到刮板机的往复活塞的柄部的多个切割钻头以及具有碳化钨等的切割构件的头部。 为了确保要被处理的表面的完全劈裂，划痕钻头的头部具有覆盖其它钻头部分的部分，使得钻头在待处理表面上的移动方向上的位重叠。
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公开(公告)号：US4153121A
公开(公告)日：1979-05-08
申请号：US749611
申请日：1976-12-13
申请人： David T. Allan
发明人： David T. Allan
CPC分类号： B23B29/03496 , B23B51/0018 , B28D1/26
摘要： The invention herein relates to an undercutting device which is provided with a substantially tubular body adapted to be placed within a parallel-sided hole. A rotary percussion head is provided at one end of the body and has one or more cutting tools which extend radially therefrom at an obtuse angle and which cutting tools are adapted to cut outwardly from the radius of the body, means are provided for rotating the head about the axis of the body and for operating the percussion head at one predetermined depth in the hole so that the cutting tools may act on the wall of the parallel-sided hole.
摘要翻译： 本发明涉及一种底切装置，其具有适于放置在平行侧孔内的基本上管状的主体。 旋转式冲击头设置在主体的一端，并且具有一个或多个切割工具，其以钝角从径向延伸，并且哪些切割工具适于从主体的半径向外切割，提供用于旋转头部的装置 围绕主体的轴线并且用于在孔中的一个预定深度操作冲击头，使得切割工具可以作用在平行侧孔的壁上。
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公开(公告)号：US5095600A
公开(公告)日：1992-03-17
申请号：US503527
申请日：1990-04-02
申请人： David T. Allan
发明人： David T. Allan
CPC分类号： B25D17/046 , B25D17/28 , E01C23/124 , Y10T29/4561 , Y10T29/4589
摘要： There is described a paving breaker wherein vibrational forces arising from reciprocation of the breaker are reduced at the breaker handles by removing the conventional direct attachment of the handles to the breaker, and instead resiliently coupling the handles to the working bit. There is also described a support for a paving breaker said support having a powered lift provided with at least one ground engageable wheel. The powered lift is under the control of a manually operable control mounted in the support.
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公开(公告)号：US4534421A
公开(公告)日：1985-08-13
申请号：US405937
申请日：1982-08-05
申请人： David T. Allan
发明人： David T. Allan
IPC分类号： B25D17/02 , B25D17/08 , B28D1/26 , E21B17/046 , E21C35/02
CPC分类号： E21B17/046 , B25D17/02 , B25D17/08 , B28D1/265 , Y10T279/17761 , Y10T279/17786 , Y10T403/61 , Y10T403/7094 , Y10T83/9473
摘要： A tool assembly in which the tool holder 6 forms a relatively small volume of metal thereby facilitating brazing of the tool bits (21, 23) and inexpensive replacement.
摘要翻译： 一种工具组件，其中刀架6形成相对小体积的金属，从而便于工具钻头（21,23）的钎焊和廉价的替换。
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公开(公告)号：US4140347A
公开(公告)日：1979-02-20
申请号：US760531
申请日：1977-01-19
申请人： David T. Allan
发明人： David T. Allan
摘要： A hand-held groove cutter, particularly for cutting grooves in concrete structures, comprises a movable carriage having wheels for rolling over the concrete structure, and a fluid-operated percussion hammer mounted on the carrier. The hammer includes a piston and a cylinder which is mounted for sliding movement in a housing, and a tool which is connected to the piston. An adjustment arrangement is operative for moving the cylinder relative to the housing to thereby adjust the stroke of the piston and the depth of stroke of the tool.
摘要翻译： 特别是用于在混凝土结构中切割凹槽的手持槽切割器包括具有用于在混凝土结构上滚动的轮的可移动托架和安装在托架上的流体操作的冲击锤。 锤包括活塞和安装成用于在壳体中滑动运动的缸体，以及连接到活塞的工具。 调节装置用于使气缸相对于壳体移动，从而调节活塞的行程和工具的行程。
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公开(公告)号：US4526190A
公开(公告)日：1985-07-02
申请号：US521605
申请日：1983-08-09
申请人： David T. Allan
发明人： David T. Allan
CPC分类号： E01C19/35 , B25D9/16 , Y10T137/2695
摘要： A control valve assembly for a pneumatic paving breaker which enables the maximum amount of energy to be imparted to the piston on its working stoke while restricting the energy imparted to the piston on its return stroke and which utilizes a reduced consumption of air, has an optimum speed of response and is relatively cheap to manufacture. This is achieved by having a valve member in the form of a pure cylindrical slug which reciprocates in a valve block in which it is a clearance fit.
摘要翻译： 一种用于气动铺路破碎机的控制阀组件，其能够在限制在其返回行程上施加到活塞上并且利用减少的空气消耗的能量的同时在活塞上施加最大量的能量，并且其具有最佳的 响应速度比较便宜。 这是通过使阀构件为纯圆柱形块的形式来实现的，该圆柱形块在阀组件中往复运动，在阀块中其为间隙配合。
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公开(公告)号：US4502734A
公开(公告)日：1985-03-05
申请号：US391585
申请日：1982-06-23
申请人： David T. Allan
发明人： David T. Allan
CPC分类号： B28D1/265
摘要： There is provided an improved scabbler bit wherein the bit is fixable to a piston of a scabbling machine through a male shank portion. The shank portion carries a circumferential groove for cooperation in the side wall of the piston to hold the shank firmly within the piston. There is also provided a scabbler bit wherein the shank portion is separate from the carrier. A novel design of a scabbler tip is also disclosed together with a novel arrangement of tips on the base of a tip carrier.
摘要翻译： 提供了一种改进的刮刀钻头，其中该钻头可通过一个阳柄部分固定到一个防滑装置的活塞上。 柄部分带有用于在活塞的侧壁中配合的周向槽，以将柄牢固地保持在活塞内。 还提供了一种止动钻头，其中柄部与托架分开。 另外还公开了一种在尖端载体的基部上的尖端的新颖设计，同时还公开了一种刮板尖端的新颖设计。
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