子分类：
- B27B17/0008： .{用于传送链锯的装置,如手柄(B27B 17/0033 优先)}
- B27B17/0016： .{为其它目的采用链锯的装置,如钻孔}
- B27B17/0025： .{与链锯一体的长度测量装置}
- B27B17/0033： .{用于减震的装置}
- B27B17/0041： .{锯台或锯架}
- B27B17/0083： .{操作时为了导引或支承的附属件}
- B27B17/0091： .{齿轮链锯; 链锯被安装在车上或被车驱动,例如用于锯树}
- B27B17/02： .配有导杆的链锯(B27B 17/06 优先)
- B27B17/06： .安装在弓上的链锯
- B27B17/08： .驱动或齿轮传动装置;回转或倾斜链锯的装置
- B27B17/12： .为链锯专门设计的润滑装置
- B27B17/14： .拉紧链锯的装置
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 201 | Chain saw | US507649 | 1990-04-09 | US5029393A | 1991-07-09 | Akira Nagashima; Takayuki Yamamoto |
| A chain saw body having an upper and lower housing. The prime mover is lowered into the upper housing and held in place in shaped recesses for it. The upper housing is itself lowered onto the lower housing, which mounts the handles and defines a fuel tank. The upper and lower housings are connected via vibration dampening couplings. | ||||||
| 202 | Work apparatus having one handle for one-handed operation | US601234 | 1990-10-22 | US5018492A | 1991-05-28 | Gunter Wolf; Reinhold Fink |
| The invention is directed to a work apparatus such as a motor-driven chain saw or the like and is especially directed to a one-hand chain saw. The apparatus has a housing for an engine for driving the work tool and an air/fuel-mixture is metered to the engine. The chain saw includes one handle for carrying and guiding the apparatus with the handle including a hold handle portion aligned approximately in the longitudinal axis of the chain saw and disposed above the housing. The handle also includes a bail-type side handle portion arranged at an angle toward the forward end of the hold handle portion. The hold handle portion is widened transversely to the longitudinal axis at its rearward end to permit the one-hand chain saw to be reliably held and guided. The carburetor is mounted in the receiving chamber so that the housing of the work apparatus can be smaller and thereby enable the hold handle portion to be brought closer to the gravity center of the chain saw. The wall of the receiving chamber facing the hold handle portion is configured as a bearing surface for the heel of the hand of the operator. | ||||||
| 203 | Continuous loop chain support apparatus | US247045 | 1988-09-20 | US4905948A | 1990-03-06 | Samuel E. Indorf |
| A transport and storage apparatus for a continuous loop roller chain is disclosed. The apparatus is specifically adapted for continuous loop roller chains comprised of individual links having at least one plate and an interconnecting pin which interconnects a pair of immediately adjacent links. Such pins restrict such adjacent links to pivoting relative to one another about a single pivot axis. The support apparatus comprises first and second chain blocks having a thickness dimension at least as great as the thickness of the individual links. The first and second chain blocks are movably coupled to and biased from one another for placing a continuous loop chain internally received thereby in tension to maintain such a chain in an expanded and untangled condition. | ||||||
| 204 | Motor-driven chain saw having an arrangement for preheating fresh intake air | US239466 | 1988-09-01 | US4890595A | 1990-01-02 | Hartmut Fischer |
| The invention is directed to an arrangement for heating the intake air of the carburetor of the engine of a handheld portable tool such as a chain saw. The fresh air entering the air intake line is quickly and adequately heated and directed to the carburetor as intake air without the danger of this intake air becoming entrained with dirt particles. In the arrangement according to the invention, the handheld portable tool can be operated at low temperatures without disturbances in the carburetor system such as freezing of the throttle flap or the main nozzle. The air intake line is lead through the muffler which is configured as a collection chamber for the exhaust gas. The heat of the hot exhaust gases passing through the muffler is transferred to the fresh air entering and passing through the intake line. | ||||||
| 205 | Lockable mounting bracket for chain saws | US215235 | 1988-07-05 | US4846385A | 1989-07-11 | William W. Fratus |
| The invention provides a lockable bracket for chain saws especially suited for mounting outside to the tailgate of a pickup truck. A substantially rectangular panel having two narrow sides curvedly right angled forms a flattened U-shape housing. Longitudinally, the opened side of the U, the edges thereof, are sharply right angled outwardly into narrow mounting flanges attached to a rectangular base. The rectangular base has the same width and length as the two attached flanges and the top panel. The base acts as a second wall allowing protective insertion of a chain saw blade inside the flattened U structure between the panel and the base. The edges of the base where the flanges are attached serve as the mounting surface and has attachment apertures for mounting by bolts of screws. The bracket is designed for mounting on the outside of a pickup truck tailgate, but is sufficiently versatile to be mounted on any support surface including a wall for display purposes. | ||||||
| 206 | Device for mounting carburetor on internal combustion engine | US131834 | 1987-12-11 | US4835866A | 1989-06-06 | Akira Nagashima |
| A construction for mounting a carburetor on a machine having a driving internal combustion engine such as a portable chain saw, wherein the carburetor is directly fixed to a fuel tank annexed to the engine and the mixture delivery side of the carburetor is connected through a resilient heat-insulating pipe to the suction port of the internal combustion engine. | ||||||
| 207 | Apparatus for confirming and reporting the operating conditions of a chain saw or the like | US916298 | 1986-10-07 | US4829579A | 1989-05-09 | Ryuzo Harada; Shigeo Take |
| Confirmation of the existance of the proper operating conditions of a power tool is obtained by providing confirmation sensing means for sensing and confirming inspection and verification of the appropriate condition of each one of a plurality of preset operating conditions by the user, a confirmed state judging means for receiving the output of the completed confirmation sensing means and judging what operating conditions have been completely inspected and verified; a confirmation instructing means for informing the user of those operating conditions yet to be inspected and verified in response to the output of the confirmed state judging means; and, switching means for receiving the output of the confirmed state judging means and thereby allowing energization of the igniting circuit of the engine only after confirmation of all the preset operating conditions are completed and met. | ||||||
| 208 | Portable handheld motor-driven tool | US123149 | 1987-11-20 | US4816192A | 1989-03-28 | Mohamed Abou-Aly; Eberhard Bohnacker; Bernhard Kiefel; Reinhard Gerhardy; Reinhard Friedrich; Erich Krauter |
| The invention is directed to a handheld, portable tool such as a chain saw equipped with an internal combustion engine mounted in an engine housing. The engine has a carburetor defining an air-intake channel. A heating element is provided which is electrically connected to the generator of the chain saw and mounted on the carburetor in the region of the air-intake channel. The heating element has a positive temperature coefficient and a predetermined temperature region thereby preventing the carburetor housing and the throttle flap from heating to a temperature above a predetermined value. The heating element and the way it is mounted prevents icing at the carburetor in cold weather thereby enabling the engine to run uninterruptedly and uniformly especially when the engine idles. | ||||||
| 209 | Chain saw | US41614 | 1987-04-23 | US4770130A | 1988-09-13 | Akira Nagashima |
| A chain saw has an intermediate wall portion integrally formed with a body thereof for separating an internal combustion engine chamber from a carbureter chamber and a fuel tank chamber. The intermediate wall portion includes a double wall portion having a heat insulation space formed therein, and an opening portion through which the carbureter chamber communicates with the internal combustion engine chamber, the opening portion forming a seat for mounting the carbureter. | ||||||
| 210 | Chain saw | US815732 | 1986-01-02 | US4727651A | 1988-03-01 | Kazuo Nakajima |
| The device is an air intake apparatus for a chain saw. There is a hollow main casing having front and rear ends. A handle extends above the casing. The handle is fixed to the casing. An engine is disposed in the casing. A carburator is disposed in the casing front adjacent to a fuel tank. An oil tank is disposed at the casing rear. | ||||||
| 211 | Arrangement for inlet of cooling and combustion air | US829831 | 1986-02-10 | US4716860A | 1988-01-05 | Soren N. Henriksson; Lars-Olof Karreman |
| The air inlet of the cooling fan is positioned substantially on top of a motor saw body so that the air is drawn from a region above the saw where the concentration of pollutants is considerably lower than at the usually known inlet through the fan cover. The air inlet is positioned at a distance from the fan cover to provide a connecting channel between the inlet and the fan wheel, in which channel a shunt damper is arranged. The shunt channel enables a balanced mixture of cold outdoor air and warm recirculating inner air so that a proper engine temperature can be effected. | ||||||
| 212 | Base structure of a motor saw | US778671 | 1985-09-23 | US4700480A | 1987-10-20 | Bo R. Rangert; Christer L. Alm |
| A base structure of a motor saw forms fuel and oil tanks (16,17) and a crankcase bottom in one piece. This piece is injection moulded in plastics with closed tank cavities obtained by means of cores in the mould which are made of a metal having a melting temperature lower than the softening temperature of the plastic material. After moulding the cores are melted by heat treatment and the metal runs out through filling holes (18,19) of the tanks. Armouring pieces are moulded in the plastics to reinforce the attachments of crankshaft bearings and the guide bar. | ||||||
| 213 | Crankcase assembly for an engine of a portable tool | US762108 | 1985-08-02 | US4610228A | 1986-09-09 | Reinhold Fink; Michael Leuchte |
| A crankcase assembly for the engine of a portable tool such as chain saw or the like is disclosed. A plastic crankcase is connected to the cylinder of the engine and an annular insulating member is mounted between the cylinder and the crankcase. The annular insulating member is made of a firm temperature-resistant plastic thereby protecting the crankcase from the temperature developed in the cylinder during the operation of the engine. | ||||||
| 214 | Joint-pipe for carburetor | US445407 | 1982-11-30 | US4475487A | 1984-10-09 | Takashi Fukuoka; Yoshiaki Nagao |
| A crank-case pre-compression type 2-cycle engine internal combustion has an intake opening formed in the wall of a crank case and provided with a reed valve therein, and a carburetor disposed at a rearward offset from the intake port. The carburetor is connected to the inlet port through a joint-pipe. The joint-pipe has a mixture passage formed therein, an intermediate contracted portion and a partition plate extending along the axis of the mixture passage. The portion of the mixture passage near the outlet opening thereof is curved to cross the intake port substantially at a right angle to the latter. | ||||||
| 215 | Chain saw | US301171 | 1981-09-11 | US4382333A | 1983-05-10 | Akira Nagashima; Yasuo Saito |
| A chain saw having a saw chain adapted to be driven by an engine. The engine has a cylinder and a crank case separable from each other. The crank case has cooling air guide walls formed integrally therewith and extending along the upper and lower sides of the cylinder. | ||||||
| 216 | Apparatus for converting power chain saw into a boring tool | US220368 | 1980-12-29 | US4363577A | 1982-12-14 | Robert Hartman |
| An apparatus for converting a power chain saw into a boring tool is disclosed and consists of an adapter housing which is detachably mounted onto the free end of the saw's chain guide. The housing includes a rotatable shaft mounted therein and extending therethrough with a sprocket fixedly mounted onto the shaft within the housing. A chuck is mounted on the shaft for securing a boring tool thereon. The sprocket is driven by a chain which is in communication with the motor of the chain saw. | ||||||
| 217 | Hand-held power tool with a combustion motor | US230594 | 1981-02-02 | US4350123A | 1982-09-21 | Gunter Kossek; Heinz Emmerich |
| A hand-held power tool comprises a drive unit including a first housing, a combustion motor located in and fixed to said first housing and having an output shaft; and a work unit including a rotatable tool, an input shaft, a transmission between the input shaft and the tool for driving the latter and a second housing. A quick-connection arrangement is provided for releasably connecting the first to the second housing and a coupling arrangement coaxial with the connection arrangement serves to couple the output shaft with the input shaft. The quick-connecting arrangement comprises a centralizing ring coaxial with the output shaft and fixed to a stationary part of the combustion motor, a coupling ring turnably mounted on the centralizing ring, an annular coupling member fixed to the second housing, the coupling ring and the coupling member having cooperating cams having inclined faces, a spring connected to the coupling ring for turning the latter in a direction in which these inclined faces are tightly engaged to couple the coupling ring with the coupling member and therewith the first housing to the second housing, and a lever projecting radially from the coupling ring and being movable from an arresting position holding the coupling ring in a stationary position to a releasing position permitting turning of the coupling ring under the action of the spring. | ||||||
| 218 | Narrow profile power handle for line trimmer and the like | US51950 | 1979-06-25 | US4286675A | 1981-09-01 | Lloyd H. Tuggle |
| A narrow profile power handle uniquely adapted for use as a flexible line trimmer having improved handling and safety features is disclosed. The power handle is also equipped with a quick connect and disconnect coupling and is useful for driving attachments to produce hand held rotary implements and tools such as brush cutters, edgers, cultivators, drills, etc., hand held reciprocating implements and tools such as hedge clippers, saws, etc., as well as portable water pumps, air compressors, generators, etc.The crankshaft of a two-stroke internal combustion engine is disposed along the longitudinal axis of a narrow profile housing which includes a rear handle having a hand grip portion disposed above and projecting rearwardly parallel to the axis of the housing. The cylinder extends upwardly from the crankcase, the carburetor is disposed below the crankcase, the flywheel, ignition system and starter to the rear, and the gas tank is disposed below the rear handle. The muffler is disposed along the forward face of the housing for discharging products of combustion forwardly of the housing and away from the operator, thereby permitting the assembly to be rotated for various trimming operations without exposing the operator to the risk of burn injury. A recoil starter handle, a choke control, throttle control and ignition kill switch are conveniently clustered around and near the hand grip portion of the rear handle which allows the operator to observe and exercise positive control over both the power handle and the cutter head while starting and operating the engine. The power handle includes a quick disconnect coupling for attaching the portable power unit to drive various attachments. As a result of this arrangement, the power handle is generally symmetrical about the longitudinal vertical plane and is of minimum width.The drive shaft of the line trimmer assembly is aligned with the crankshaft of the engine and a forward handle is disposed above the drive shaft ahead of the engine housing. As a result, the center of gravity of the overall line trimmer assembly is below and between the forward and rearward handles, thereby providing improved balance and maneuverability. | ||||||
| 219 | Portable saw | US14862 | 1979-02-26 | US4272889A | 1981-06-16 | Lewis A. Scott; Duane M. Gibson |
| The specification discloses a motor housing, with a handle of the circular saw type, and a cantilever saw bar carrying a saw chain is secured to the housing in a position extending downwardly from a guide foot of the housing. A retractable guard bar normally is held in a position holding a guard loop around the nose end of the saw bar, the guard bar being positioned at the rear of the saw bar. The guard bar is mounted slidably on the motor housing, and, when a latch is manually released, the guard loop may be pushed up along the saw during a boring (nose cutting) operation. In an alternate embodiment, a foot attachable to a foot of a circular saw motor carries a saw bar and a guard bar with a guard loop surrounding the nose end of the saw bar. | ||||||
| 220 | Air cleaning system of internal combustion engine | US948235 | 1978-10-03 | US4261302A | 1981-04-14 | John D. Sheldon |
| The air inlet of the carburetor of an internal combustion engine is connected to an opening in an end wall of the housing of a fan for supplying cooling air to the engine. An inwardly inclined lip at the upstream side of the opening and an inwardly sloping surface at the downstream side of the opening deflect dirt or other solid particles in the air inwardly away from the opening so that the air supplied to the carburetor is freed of such particles. The fan housing and carburetor are directly mounted on the crank case of the engine to provide a compact construction. | ||||||
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