IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0726413
(2012-12-24)
|
등록번호 |
US-8640685
(2014-02-04)
|
발명자
/ 주소 |
- Marsic, Martin D.
- Smith, Kent A.
- Edwards, Brian S.
|
출원인 / 주소 |
- Diamond Products, Limited
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
10 |
초록
▼
A concrete saw having a geared assembly for rotating a cutting blade is described. The saw utilizes a longitudinally oriented engine for rotating the blade. Various additional features and improvements are described including a particular belt tensioner assembly, an indicator and control system for
A concrete saw having a geared assembly for rotating a cutting blade is described. The saw utilizes a longitudinally oriented engine for rotating the blade. Various additional features and improvements are described including a particular belt tensioner assembly, an indicator and control system for cutting blade depth, a handle adjustment and locking system, and provisions for control of blade water are described.
대표청구항
▼
1. A concrete saw including a frame, a rotary power source, and a belt tensioning assembly, the assembly comprising: a blade shaft drive assembly including at least one lower rotatable sheave in operable engagement with a cutting blade, a rotatable blade shaft having provisions for rotating a cuttin
1. A concrete saw including a frame, a rotary power source, and a belt tensioning assembly, the assembly comprising: a blade shaft drive assembly including at least one lower rotatable sheave in operable engagement with a cutting blade, a rotatable blade shaft having provisions for rotating a cutting blade, a rotatable jack shaft oriented parallel to the blade shaft, and a plurality of gears operably engaging the blade shaft and the jack shaft, the jack shaft including the lower sheave which is engaged with the jack shaft;a positionable drive shaft assembly including at least one upper rotatable sheave in operable engagement with the rotary power source;at least one belt extending between and in operable engagement with the lower sheave and the upper sheave such that rotation of the upper sheave imparts rotation to the lower sheave; andan adjusting assembly having provisions for selectively changing the position of the drive shaft assembly relative to the blade shaft drive assembly thereby changing the distance between the lower sheave and the upper sheave. 2. The concrete saw of claim 1, wherein the belt is a V-belt. 3. The concrete saw of claim 1 wherein the rotary power source is an internal combustion engine and the drive shaft assembly is engaged with and supported by the engine. 4. The concrete saw of claim 3 wherein the engine is supported by at least one front engine mount and at least one pivotable rear engine mount, the provisions of the adjusting assembly including: a threaded member extending between the front engine mount and the frame, wherein rotation of the threaded member alters the position of the engine, and the drive shaft assembly engaged thereto, in relation to the frame to thereby change the distance between the lower sheave and the upper sheave. 5. The concrete saw of claim 4 wherein the front engine mount includes a laterally extending lift member, the lift member defining a threaded bore therethrough, and the threaded member being threadedly engaged in the threaded bore of the lift member. 6. The concrete saw of claim 1 wherein the drive shaft assembly includes a rotatable drive shaft, a motor shaft oriented transversely to the drive shaft, and a plurality of gears operably engaging the drive shaft and the motor shaft, the drive shaft including the upper sheave engaged with the drive shaft. 7. The concrete saw of claim 6, wherein: the blade shaft drive assembly includes two lower sheaves mounted on opposite end regions of the drive shaft; andthe drive shaft assembly includes two upper sheaves mounted on opposite end regions of the drive shaft and aligned with the two lower sheaves. 8. The concrete saw of claim 4, wherein the threaded member comprises a shaft, a head on an upper region of the shaft configured for engagement with a tool for rotating the threaded member, and a lower region extending beyond a lower face of the lift member and supported by the frame. 9. The concrete saw of claim 3, wherein rotation of the threaded member alters the vertical position of the engine and the drive shaft assembly engaged thereto, thereby changing the distance between the lower sheave and the upper sheave. 10. The concrete saw of claim 3, wherein: the engine has two frontward corners on a front region of the engine, and two rearward corners on an opposite rear region of the engine;the engine is supported by two front engine mounts, one at each of the frontward corners; andthe engine is pivotably supported by two rear engine mounts, one at each of the rearward corners. 11. The concrete saw of claim 10, wherein each of the two front engine mounts have an adjusting assembly comprising a threaded member extending between each of the two front engine mounts and the frame. 12. The concrete saw of claim 11, wherein rotation of the threaded members raise a front region of the engine pivotally about the two rear engine mounts, thereby changing an angle between the engine and the frame and changing the distance between the lower sheave and the upper sheave. 13. The concrete saw of claim 12, wherein the angle between the engine and the frame can range from zero degrees to about 5 degrees. 14. A concrete saw including: a frame;a rotary power source;a belt tensioning assembly comprising a blade shaft drive assembly including at least one lower rotatable sheave in operable engagement with a cutting blade, a positionable drive shaft assembly including at least one upper rotatable sheave in operable engagement with the rotary power source, at least one belt extending between and in operable engagement with the lower sheave and the upper sheave such that rotation of the upper sheave imparts rotation to the lower sheave, and an adjusting assembly having provisions for selectively changing the position of the drive shaft assembly relative to the blade shaft drive assembly thereby changing the distance between the lower sheave and the upper sheave;a wheel assembly mounted on a pivotable carriage;a hydraulic ram extending between the frame and the carriage for selectively positioning the carriage and changing a blade depth; anda blade depth control system comprising a linearly positionable actuator rod, an electric motor operably engaged with the rod for selectively positioning the rod relative to the frame, and a slide member carrying a proximity sensor in sensing range of the actuator rod, the slide member mechanically coupled to the carriage such that changing the position of the carriage displaces the slide member and proximity sensor;wherein a change in the relative position of the slide member and the proximity sensor to the actuator rod enables the proximity sensor to provide a signal indicative of such position change. 15. The concrete saw of claim 14 wherein the proximity sensor is a magnetic field proximity sensor and the actuator rod includes a magnet. 16. The concrete saw of claim 14 further comprising: a sensing enclosure having a hollow interior, wherein the actuator rod, the slide member, and the proximity sensor are disposed within the interior of the enclosure. 17. The concrete saw of claim 14 wherein the slide member is mechanically coupled to the carriage by: a carriage bracket affixed to the carriage;a pivotable cross arm attached to the frame;a first linkage member extending between the cross arm and the carriage bracket;a pivotable lever attached to the frame, a first end of the lever engaged to the slide member; anda second linkage member extending between the cross arm and a second end of the lever, the second end being opposite the first end of the lever. 18. The concrete saw blade of claim 14 wherein the proximity sensor is in communication with a controller for operating the hydraulic ram. 19. The concrete saw of claim 14 wherein the electric motor is selectively operable to position the actuator rod to a desired position relative to the proximity sensor.
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