公开(公告)号：US5136783A

公开(公告)日：1992-08-11

申请号：US704466

申请日：1991-05-23

Applicant: Don A. Bell ,  Encho Kuzarov

Inventor： Don A. Bell ,  Encho Kuzarov

IPC: B27B17/08 ,  B27B33/14 ,  B28D1/12

CPC classification number: B27B33/14 ,  B27B17/08 ,  B28D1/124

Abstract: A chain saw bar nose has a rotatable sprocket. The sprocket assembly is adapted to conform in shape to the drive tang portions of the saw chain whereby the nose sprocket may receive operational forces imposed by the saw chain substantially as compressive forces as opposed to tensile forces. As a result, the nose sprocket assembly better withstands the harsh operating conditions imposed by cutting applications.

Abstract translation: 链锯条具有可转动的链轮。 链轮组件适于在形状上与锯链的驱动柄部分一致，从而鼻链轮可以接收基本上作为抗拉力的压缩力而由锯链施加的操作力。 因此，鼻梁链轮组件更好地承受切割应用所施加的苛刻的操作条件。

公开(公告)号：US5129160A

公开(公告)日：1992-07-14

申请号：US710186

申请日：1991-06-04

Applicant: Don A. Bell

Inventor： Don A. Bell

IPC: B27B17/00 ,  B28D1/08

CPC classification number: B28D1/082 ,  B27B17/0083 ,  Y10T83/6584 ,  Y10T83/7114

Abstract: A chain saw feed mechanism includes an arm pivotally mounted to the chain saw and carrying a dog for pivotally engaging the workpiece at the kerf. Thrusting the chain saw along the longitudinal axis of the guide bar moves the guide bar along an arc concentric to the point of workpiece engagement and thereby cuts laterally through the workpiece. Longitudinal thrusting force applied by the operator transfers via the lever arm into lateral feed force needed for cutting the workpiece. The feed mechanism is particularly useful in aggregate cutting applications, where the chain saw is heavy and large cutting forces are needed to pass the saw through the aggregate.

公开(公告)号：US4970789A

公开(公告)日：1990-11-20

申请号：US418189

申请日：1989-10-06

Applicant: Don A. Bell

Inventor： Don A. Bell

IPC: B27B17/04

CPC classification number: B27B17/04

Abstract: A sprocket nose guide bar for guiding an endless saw chain. A configured sprocket is rotatably mounted in the nose of the bar and functions to elevate and transport the saw chain around the nose end. The teeth of the sprocket engage the drive links of the chain to lift the chain off the nose edge as the chain traverses the nose. The tooth tips project above the side link bearing surfaces and into configured notches whereby the teeth effectively provide the lifting action without entering the saw chain chassis.

公开(公告)号：US6138658A

公开(公告)日：2000-10-31

申请号：US267453

申请日：1999-03-12

Applicant: Don A. Bell

Inventor： Don A. Bell

IPC: B28D1/12 ,  B28D1/00

CPC classification number: B28D1/124 ,  Y10T83/909 ,  Y10T83/917

Abstract: A saw chain for cutting aggregate material has sealing members to seal the pivotal connection between the center drive links and the rivets to prevent entry of contaminates into the bearing surfaces. In one arrangement, O-rings are mounted in grooves of the tie straps with the O-ring being compressively forced against the center drive link. The O-ring prevents entry of contaminants into the bearing surface between the bore of the center drive link and the rivet. In another arrangement spring type cup washers fit in a groove of the tie straps and the cup washers are biased against the center drive link.

Abstract translation: 用于切割骨料的锯链具有密封构件，用于密封中心驱动连杆和铆钉之间的枢转连接，以防止污染物进入轴承表面。 在一种布置中，O形环安装在连接带的凹槽中，O形环被压迫地抵靠中心驱动连杆。 O形环防止污染物进入中心驱动连杆的孔和铆钉之间的轴承表面。 在另一种布置中，弹簧式杯垫圈装配在系带的槽中，并且杯形垫圈偏压在中心驱动连杆上。

公开(公告)号：US5184598A

公开(公告)日：1993-02-09

申请号：US730192

申请日：1991-07-15

Applicant: Don A. Bell

Inventor： Don A. Bell

IPC: B27B33/14 ,  B28D1/12

CPC classification number: B27B33/141 ,  B28D1/124

Abstract: An articulated saw chain for cutting aggregate material and the like. The saw chain has cutting blocks affixed to pairs of side links and guards formed or attached to side link pairs positioned between successive cutting blocks. A guard portion is thus adjacent each end of the cutting block. The guard portions extend to substantially the same height as the cutting block to protect the edge of the cutting block from impacting against an object. The guards wear at a rate that does not significantly impede or interface with the cutting action of the cutting block.

Abstract translation: 用于切割骨料的铰链锯链等。 锯链具有固定到成对的侧连接件和形成或连接到位于连续的切割块之间的侧连杆对的保护件的切割块。 因此，防护部分与切割块的每个端部相邻。 保护部分延伸到与切割块基本上相同的高度，以保护切割块的边缘免受碰撞物体的影响。 防护罩以不会明显阻碍切割块的切割动作或与切割块的切割动作相接合的速度磨损。