公开(公告)号：US4558621A

公开(公告)日：1985-12-17

申请号：US633196

申请日：1984-07-23

申请人： Karl Nitschmann ,  Wilfried Linke ,  Gunter Dietzsch ,  Werner Hartmann ,  Hans-Georg Kaiser ,  Werner Meyle ,  Hans Dolata

发明人： Karl Nitschmann ,  Wilfried Linke ,  Gunter Dietzsch ,  Werner Hartmann ,  Hans-Georg Kaiser ,  Werner Meyle ,  Hans Dolata

IPC分类号： B27B33/14

CPC分类号： B27B33/141 ,  Y10T83/909 ,  Y10T83/925

摘要： The invention is directed to a saw chain for a motor-driven chain saw which includes cutting links, side connecting links, driving links and safety links. Each safety link has an upper edge defining a wave-like contour that prevents chips from accumulating during the cutting action. The cutting links and safety links of the saw chain are arranged with respect to each other so that overlap is avoided between the tail end of the rearward projection of the safety link and the forward projection of the depth limiter of the cutting tooth. This affords the advantage that cutting chips do not become jammed therebetween.

摘要翻译： 本发明涉及一种用于电动链锯的锯链，其包括切割链接，侧连接链接，驱动链接和安全链接。 每个安全连杆具有限定波形轮廓的上边缘，防止切屑在切割过程中积累。 锯链的切割链节和安全链条相对于彼此布置，使得在安全链节的向后突起的尾端和切割齿的深度限制器的向前突起之间避免重叠。 这提供了切割切屑不会卡在其间的优点。

公开(公告)号：US4756221A

公开(公告)日：1988-07-12

申请号：US7746

申请日：1987-01-28

申请人： Karl Nitschmann ,  Hans Dolata ,  Werner Hartmann

发明人： Karl Nitschmann ,  Hans Dolata ,  Werner Hartmann

IPC分类号： B27B33/14

CPC分类号： B27B33/142 ,  B27B33/14 ,  B27B33/141 ,  Y10T83/909 ,  Y10T83/921 ,  Y10T83/925

摘要： A saw chain has pivotally interconnected chain links which includes cutting links and safety links and these links are effective as working links. The cutting links are each provided with a cutting tooth for cutting into wood and the safety links are each provided with a projection which limits the depth of the cut of the cutting tooth which follows the safety link. The pivot axes of the chain links lie in an action plane above the guide bar in the stretched portion of the saw chain when the latter is subjected to the pulling force exerted by the drive of the chain saw. The cutting links are pivotable with respect to this plane. In addition, the safety links can also be pivotable in this manner. When the cutting links are in their pivoted-out position under this pulling force, no clearance angle is available at the roof of the cutting tooth so that the cutting edge has no cutting effect. For this reason, there is no kickback when the saw chain is placed against the wood. When an advancing thrust is applied to the chain saw, the cutting links in the stretched running portion of the chain are pivoted into their pivoted back position or working position by means of reaction forces; whereas, in the direction-reversal region of the guide bar, the cutting links are retained in their pivoted-out position by means of the support imparted to the drive links by the nose sprocket of the guide bar. In this way, the danger of kickback remains low.

摘要翻译： 锯链具有枢轴互连的链节，其包括切割链接和安全链接，并且这些链接作为工作链接是有效的。 切割连杆分别设置有用于切割成木材的切割齿，并且安全连接件均设置有突出部，该突起限制了紧跟安全链接的切割齿的切割深度。 链节的枢轴位于锯链的延伸部分中的导杆上方的动作平面中，当链条链受到由链锯的驱动施加的拉力时。 切割链接可相对于该平面枢转。 此外，安全链接也可以以这种方式枢转。 当切割链条在该牵引力下处于其枢转位置时，在切割齿的顶部处没有间隙角，使得切削刃不具有切割效果。 因此，当锯链放在木头上时，没有回扣。 当推进推力施加到链锯上时，链条的拉伸运行部分中的切割链节通过反作用力枢转到它们的枢转的后部位置或工作位置; 而在引导杆的方向反转区域中，切割连杆通过由引导杆的前端链轮传递给驱动连杆的支撑件保持在其枢转位置。 这样，回扣的危险仍然很低。

公开(公告)号：US4554853A

公开(公告)日：1985-11-26

申请号：US541301

申请日：1983-10-12

申请人： Karl Nitschmann ,  Hans Dolata ,  Gunter Dietzsch

发明人： Karl Nitschmann ,  Hans Dolata ,  Gunter Dietzsch

IPC分类号： B27B33/14 ,  B27B17/00

CPC分类号： B27B33/141 ,  B27B33/142 ,  Y10T83/866 ,  Y10T83/921 ,  Y10T83/925

摘要： The invention is directed to a safety arrangement for a saw chain which includes cutting links. A first safety mark is formed in the outside surface of the upwardly-extending portion of the rearmost wall of the cutting link. This first safety mark is disposed at a predetermined distance from the trailing edge of the cutting link and extends in a direction substantially parallel thereto. A second safety mark is formed in the wall of the depth limiter and extends from the leading edge of the cutting link to a notch between the depth limiter and the cutting tooth. The second safety mark is disposed at a predetermined distance below the engaging edge of the limiter. The first safety mark defines the rearmost position to which the blade and the upwardly-extending portion of the cutting tooth can be safely worn provided that the engaging edge of the depth limiter has not been worn down to an elevation below the second safety mark whereby the marks provide positive visual indications to an operator when further use of the saw chain would be unsafe.

摘要翻译： 本发明涉及一种包括切割链节的锯链的安全装置。 在切割链节的最后壁的向上延伸部分的外表面上形成第一安全标记。 该第一安全标记设置在距离切割链接的后缘预定距离处并且沿与其大致平行的方向延伸。 在深度限制器的壁上形成第二安全标记，并且从切割链节的前缘延伸到深度限制器和切割齿之间的凹口。 第二安全标记设置在限制器的接合边缘下方的预定距离处。 第一安全标记定义了最后面的位置，刀片和切割齿的向上延伸的部分可以被安全地佩戴在其上，只要深度限制器的接合边缘没有磨损到低于第二安全标记的高度， 当进一步使用锯链不安全时，标记为操作者提供正面的视觉指示。

公开(公告)号：US4636147A

公开(公告)日：1987-01-13

申请号：US762104

申请日：1985-08-02

申请人： Karl Schweitzer ,  Karl Nitschmann ,  Hans Dolata

发明人： Karl Schweitzer ,  Karl Nitschmann ,  Hans Dolata

IPC分类号： B23Q11/10 ,  B27B17/12 ,  F02B63/02 ,  F16N13/10 ,  B25F1/02 ,  B23Q11/12 ,  F04B49/00

CPC分类号： B27B17/12 ,  F02B63/02 ,  F16N13/10 ,  Y10T83/263

摘要： A lubricating-oil pump is disclosed for a motor-driven apparatus such as a chain saw. The lubricating-oil pump delivers lubricating oil to a tool. The supply of lubricating oil from the oil pump to the tool can be interrupted. For example, in this way the flow of oil can be stopped when an accessory tool or the like is mounted on the motor-driven apparatus which requires no lubricating oil during operating.

摘要翻译： 公开了一种用于电动驱动装置如链锯的润滑油泵。 润滑油泵为工具提供润滑油。 从油泵向工具供应润滑油可能会中断。 例如，以这种方式，当在操作期间不需要润滑油的马达驱动装置上安装附件工具等时，可以停止油流。

公开(公告)号：US4459890A

公开(公告)日：1984-07-17

申请号：US439528

申请日：1982-11-04

申请人： Hans Dolata ,  Werner Meyle ,  Adam Kelbert ,  Karl Nitschmann

发明人： Hans Dolata ,  Werner Meyle ,  Adam Kelbert ,  Karl Nitschmann

IPC分类号： B27B33/14

CPC分类号： B27B33/141 ,  Y10T83/909 ,  Y10T83/925

摘要： A saw chain, for power saws, having cutting links alternately on the right-hand and left-hand sides, central driving links, and lateral connecting links. The individual links are pivotally interconnected by means of pins. At least some driving links are provided with a safety projection, which extends in the opposite direction to the direction of rotation. The outer edge of the safety projection is radially farther than the outer edges of the connecting links of the following driving link. As the chain rotates around the free end of the guide rail, in the direction of travel, the rearmost section of the outer edge of the safety projection describes a trajectory which is greater by predetermined amount than the trajectory described by the tip of the cutting tooth.

摘要翻译： 用于动力锯的锯链在右侧和左侧交替地具有切割链接，中心驱动链接和横向连接链接。 各个连杆通过销枢轴互连。 至少一些驱动连杆设置有安全突起，其沿与旋转方向相反的方向延伸。 安全突起的外边缘比以下驱动连杆的连接链节的外边缘径向更远。 当链条围绕导轨的自由端旋转时，在行进方向上，安全突起的外边缘的最后部分描述了比由切齿的尖端描述的轨迹更大预定的轨迹 。

公开(公告)号：US4409874A

公开(公告)日：1983-10-18

申请号：US226731

申请日：1981-01-21

申请人： Karl Nitschmann ,  Hans Dolata ,  Gunter Dietzsch

发明人： Karl Nitschmann ,  Hans Dolata ,  Gunter Dietzsch

IPC分类号： B27B33/14 ,  B27B17/00

CPC分类号： B27B33/141 ,  B27B33/142 ,  Y10T83/866 ,  Y10T83/921 ,  Y10T83/925

摘要： A saw chain for chain saws, particularly portable power chain saws, comprising chain members which are pivotally connected with each other. At least some of the chain members are provided with a safety marking to show the extent of wear.

摘要翻译： 用于链锯的锯链，特别是便携式动力链锯，包括彼此枢转地连接的链条构件。 至少一些链条件具有安全标记以显示磨损程度。

公开(公告)号：US4934052A

公开(公告)日：1990-06-19

申请号：US286749

申请日：1988-12-19

申请人： Karl Nitschmann ,  Werner Hartmann

发明人： Karl Nitschmann ,  Werner Hartmann

IPC分类号： B27B33/14

CPC分类号： B27B33/147 ,  Y10T83/263 ,  Y10T83/909

摘要： The invention is directed to a saw chain for a motor-driven chain saw equipped with a guide bar and for which lubricating oil is continuously supplied during operation. The oil reaches the guide groove of the guide bar and is directed to the pivotal joints of the saw chain. The oil is taken up by the foot portions of the center links of the saw chain which engage the guide groove. Groove-like channels are provided in a side face of these foot portions via which the lubricating oil is conducted to the pivotal joints. Lubricant pockets are provided in the foot portions of the center links of the saw chain which are supplementary to the channels so that the center links can take along a greater quantity of lubricant. This lubricant then reaches the pivotal joints through the channels especially at the forward end of the guide bar where the saw chain changes direction. This flow of the lubricant to the pivotal joints occurs at the turn-around location because of the centrifugal force which acts on the lubricant as the saw chain moves around the forward end of the guide bar so that an adequate lubrication is assured even at this forward region and also at the lower portion of the turn-around region where the cutting action of the saw chain takes place.

摘要翻译： 本发明涉及一种装有导向杆的电动链锯锯锯，并且在操作期间连续地供给润滑油。 油到达引导杆的引导槽并且被引导到锯链的枢转接头。 油被锯链的中心连杆的脚部与引导槽接合。 沟槽状通道设置在这些脚部的侧面中，润滑油经由该沟槽导向枢转接头。 在锯链的中心连杆的脚部设有润滑剂袋，它们与通道相辅相成，使得中心连杆可以吸收更多量的润滑剂。 然后，该润滑剂通过通道特别是在导向杆的前端处，其中锯链改变方向到达枢转接头。 由于当链条围绕导杆的前端移动时作用在润滑剂上的离心力，润滑剂向枢转接头的流动发生在转向位置，使得即使在该向前 并且还在发生锯链的切割动作的转向区域的下部。

公开(公告)号：US5666733A

公开(公告)日：1997-09-16

申请号：US516759

申请日：1995-08-18

申请人： Karl Nitschmann

发明人： Karl Nitschmann

IPC分类号： B27B17/02 ,  B23D57/02

CPC分类号： B27B17/025

摘要： A guide bar for a saw chain of a motor chainsaw has two side plates having a longitudinal extension. At least one longitudinal stay for fixedly connecting the side plates to one another is provided such that the side plates are positioned substantially congruent and parallel to one another and define a peripheral guide groove therebetween. The longitudinal stay preferably extends in a direction of the longitudinal extension over most of the longitudinal extension of the side plates. The longitudinal stay has contact surfaces and the side plates have support surfaces extending perpendicular to the center plane of the guide bar extending parallel to the side plates. The contact surfaces rest on the support surfaces.

摘要翻译： 用于电动锯的锯链的导杆具有纵向延伸的两个侧板。 提供了用于将侧板彼此固定连接的至少一个纵向支撑件，使得侧板彼此基本上一致并且彼此平行并且在它们之间限定周向引导槽。 纵向支撑件优选沿着侧板的纵向延伸部分的纵向延伸方向延伸。 纵向撑杆具有接触表面，并且侧板具有垂直于导向杆的平行于侧板延伸的中心平面延伸的支撑表面。 接触表面搁置在支撑表面上。

公开(公告)号：US4979416A

公开(公告)日：1990-12-25

申请号：US352464

申请日：1989-05-16

申请人： Karl Nitschmann

发明人： Karl Nitschmann

IPC分类号： B27B33/14

CPC分类号： B27B33/142 ,  Y10T83/909 ,  Y10T83/925

摘要： The invention is directed to a cutting link for a saw chain of a motor-driven chain saw. Since the cutting links of the saw chain wear differently at the forward and rearward running surfaces, the cutting link tilts in a direction opposite to the direction of movement of the saw chain whereby a free angle conjointly defined by the roof of the cutting tooth and the cutting plane becomes larger. However, a larger free angle changes the cutting performance of the saw chain. In order to obtain an approximately uniform cutting performance over a longer period of operational use, the tooth roof can be configured over its length to define free angles which become smaller whereby the enlargement of the free angle occurring during the tilting of the cutting link caused by wear is compensated.

摘要翻译： 本发明涉及一种用于电动链锯锯锯的切割连杆。 由于锯链的切割链接在前后运动表面上的磨损不同，所以切割连杆在与锯链的运动方向相反的方向上倾斜，由此切割齿的顶部和 切割面变大。 然而，更大的自由角度改变了锯链的切割性能。 为了在更长的操作使用期内获得大致均匀的切割性能，齿顶可以被配置在其长度上以限定变得更小的自由角，由此在切割链接的倾斜期间发生的自由角的增大由 磨损得到补偿。

公开(公告)号：US4385442A

公开(公告)日：1983-05-31

申请号：US229129

申请日：1981-01-28

申请人： Karl Nitschmann ,  Gunter Weidmann

发明人： Karl Nitschmann ,  Gunter Weidmann

IPC分类号： B27G19/06 ,  B23D59/00 ,  B27B17/08 ,  F16D59/00 ,  B27B17/00

CPC分类号： B23D59/001 ,  B27B17/083 ,  F16D59/00

摘要： A portable power chain saw with a safety device to protect against kick-back or recoil movements of the saw. The power chain saw has a handle, a finger guard which is arranged between the handle and the saw chain and acts as an inertial mass, as well as a blocking device which actuates the safety device at the beginning of a kick-back movement. The chain saw also includes a monitoring device, which responds to an operating condition of the chain saw impairing the safety of use thereof by an operator, and which is in effective connection with an indicating device. An auxiliary device may additionally be provided for actuating the safety device, and this auxiliary device is releasable by the monitoring device and ultimately brings the saw to a standstill.

摘要翻译： 便携式动力链锯带有安全装置，以防止锯的反冲或反冲运动。 动力链锯具有手柄，手指护罩布置在手柄和锯链之间并用作惯性块，以及在反冲运动开始时致动安全装置的阻挡装置。 链锯还包括监视装置，该监视装置响应于操作者损害其使用安全性的链锯的操作状态，并与指示装置有效连接。 可以另外设置辅助装置以用于致动安全装置，并且该辅助装置可由监视装置释放，并最终使锯停止。