Abstract: A concrete or asphalt profiling apparatus which operates without the use of a wetting agent includes a housing that encloses a plurality of diamond-tipped blades mounted to an arbor and adapted for high-speed rotation, and a suction device in communication with an area enclosed by the housing and configured to generate a suction force so to remove non-wetted dust generated during a profiling operation. During the profiling operation, a mixture of non-wetted dust and air can be drawn from the housing through a conduit and into a container by means of the suction device. An internally supported filter membrane extending into the container separates the concrete dust from the air in the mixture such that a portion of the concrete dust falls into a lower chamber and a portion of the concrete dust cakes on the filter membrane. The apparatus further includes a compressed air port that is adapted to selectively expel compressed air toward the filter membrane to dislodge concrete dust caked thereon.

Abstract: A lockable hinge assembly for a blade guard includes a first hinge member secured to a first blade guard portion and a second hinge member secured to a second blade guard portion and rotatably secured to the first hinge member. A lock mechanism is provided so as to lock the second hinge member in a predetermined rotational orientation relative to the first hinge member. As such, the second hinge member and second blade guard portion can be locked in a predetermined position relative to the first hinge member and first blade guard portion, respectively.

Abstract: A portable boring machine for cutting holes in a cutting surface is provided. The portable boring machine includes a vacuum system to secure a front end of the portable boring machine to a cutting surface, a hydraulic boring sub-assembly, which includes a hole saw to cut holes in the cutting surface, a water cooling/lubrication system to provide cooling and/or lubrication to the hole saw during the cutting process, and a control system to control the operation of the portable boring machine. The portable boring machine also includes multiple power-driven wheels. The wheels are attached to a bottom portion of a frame and are powered by an engine, which is mounted within the frame.

Abstract: An adjustable handle assembly for a road surface cutting saw is provided that includes a back plate attached to the saw housing, an outer gear attached to the back plate, a bracket assembly including an inner gear, a tubular member slidably attached to the bracket assembly, and an adjustment lever having a threaded engagement end. The adjustment lever secures the bracket assembly to the saw such that the inner gear engages the outer gear. When the adjustment lever is loosened a bias spring biases the bracket assembly away from the saw such that the inner gear disengages from the outer gear to thereby allow rotation of the handle assembly to a desired operating position.

Abstract: 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.

Abstract: A green concrete saw that allows for precise adjustment of a height of a circular saw blade is provided. The saw provides for the circular saw blade to be secured to a front end of a mainframe mounted on an undercarriage. A major height adjustment is performed by adjusting the height of the mainframe relative to the undercarriage. Further, the undercarriage supports wheels for the saw, and a fine height adjustment is performed by adjusting the height of a front end of the undercarriage relative to the ground through the use of an eccentric front axle.

Abstract: A floor or road saw (20) that includes a multi-speed transmission (24) that includes a neutral position. The transmission does not require the use of belts, polychains, or clutches that require regular maintenance and/or replacement. Moreover, the transmission (24) of the saw (20) may be shifted when the transmission is engaged and shifted through a set of gears (62) in a sequential manner. Further, the transmission is well suited for use on saws where power source or prime mover (22) is disposed parallel to the longitudinal axis of the saw (20).

Abstract: A floor or road saw (20) that includes a multi-speed transmission (24) that includes a neutral position. The transmission does not require the use of belts, polychains, or clutches that require regular maintenance and/or replacement. Moreover, the transmission (24) of the saw (20) may be shifted when the transmission is engaged and shifted through a set of gears (62) in a sequential manner. Further, the transmission is well suited for use on saws where power source or prime mover (22) is disposed parallel to the longitudinal axis of the saw (20).

Abstract: A portable boring machine for cutting holes in a cutting surface is provided. The portable boring machine includes a vacuum system to secure a front end of the portable boring machine to a cutting surface, a hydraulic boring sub-assembly, which includes a hole saw to cut holes in the cutting surface, a water cooling/lubrication system to provide cooling and/or lubrication to the hole saw during the cutting process, and a control system to control the operation of the portable boring machine. The portable boring machine also includes multiple power-driven wheels. The wheels are attached to a bottom portion of a frame and are powered by an engine, which is mounted within the frame.

Abstract: A bolt lock is described for attachment to a blade collar of a concrete saw. The bolt lock stabilizes the position of a blade collar mounting bolt thereby preventing the bolt from loosening, which could otherwise result in the blade disengaging from the concrete saw.

Abstract: An adjustable handle assembly for a road surface cutting saw is provided that includes a back plate attached to the saw housing, an outer gear attached to the back plate, a bracket assembly including an inner gear, a tubular member slidably attached to the bracket assembly, and an adjustment lever having a threaded engagement end. The adjustment lever secures the bracket assembly to the saw such that the inner gear engages the outer gear. When the adjustment lever is loosened a bias spring biases the bracket assembly away from the saw such that the inner gear disengages from the outer gear to thereby allow rotation of the handle assembly to a desired operating position.

Abstract: The present invention provides a forward motion speed control system for a self-propelled concrete saw, a self-propelled concrete saw equipped with a forward motion speed control system and a method of controlling the forward motion speed of a concrete saw during a cutting or scoring operation. In one preferred embodiment of the invention, the forward motion speed control system senses and monitors the speed of a power plant transmitting rotational energy to a saw blade and adjusts the forward motion speed of the self-propelled concrete saw to maximize the forward motion speed of the self-propelled concrete saw while maintaining the speed of the power plant in a peak operational range.

Abstract: The present invention provides a forward motion speed control system for a self-propelled concrete saw, a self-propelled concrete saw equipped with a forward motion speed control system and a method of controlling the forward motion speed of a concrete saw during a cutting or scoring operation. In one preferred embodiment of the invention, the forward motion speed control system senses and monitors the speed of a power plant transmitting rotational energy to a saw blade and adjusts the forward motion speed of the self-propelled concrete saw to maximize the forward motion speed of the self-propelled concrete saw while maintaining the speed of the power plant in a peak operational range.

Abstract: The invention provides a bolt lock for attachment to the blade collar of a concrete saw. The collar serves to stabilize the position of the blade collar bolt thereby helping to prevent the bolt from loosening, which can in turn lead to the blade falling off the concrete saw.

Abstract: The present invention provides a forward motion speed control system for a self-propelled concrete saw, a self-propelled concrete saw equipped with a forward motion speed control system and a method of controlling the forward motion speed of a concrete saw during a cutting or scoring operation. In one preferred embodiment of the invention, the forward motion speed control system senses and monitors the speed of a power plant transmitting rotational energy to a saw blade and adjusts the forward motion speed of the self-propelled concrete saw to maximize the forward motion speed of the self-propelled concrete saw while maintaining the speed of the power plant in a peak operational range.

Abstract: A floor or road saw that includes a multi-speed transmission that includes a neutral position. The transmission does not require the use of belts, polychains or clutches that require regular maintenance and/or replacement. Moreover, the transmission of the saw may be shifted when the transmission is engaged and shifted through a set of gears in a sequential manner. Further, the transmission is well suited for use on saws where power source or prime mover is disposed parallel to the longitudinal axis of the saw.

Abstract: A floor or road saw that includes a multi-speed transmission that includes a neutral position. The transmission does not require the use of belts, polychains or clutches that require regular maintenance and/or replacement. Moreover, the transmission of the saw may be shifted when the transmission is engaged and shifted through a set of gears in a sequential manner. Further, the transmission is well suited for use on saws where power source or prime mover is disposed parallel to the longitudinal axis of the saw.

Abstract: Apparatus and methods for controlling the operation of a pavement surfacing machine are described. One embodiment that controls a pavement surfacing machine having a vehicle moveable in a preselected direction of travel along a pavement surface under the influence of a prime mover and configured to urge a rotatable grinding head against the pavement surface includes at least one sensor configured to measure a preselected operational parameter of the pavement surfacing machine and provide an output representative of the parameter and a controller that is configured to control the rate at which the vehicle moves in response to the sensor output.

Abstract: Apparatus and methods for controlling the operation of a pavement surfacing machine are described. One embodiment that controls a pavement surfacing machine having a vehicle moveable in a preselected direction of travel along a pavement surface under the influence of a prime mover and configured to urge a rotatable grinding head against the pavement surface includes at least one sensor configured to measure a preselected operational parameter of the pavement surfacing machine and provide an output representative of the parameter and a controller that is configured to control the rate at which the vehicle moves in response to the sensor output.

Abstract: A concrete saw for cutting concrete and other hard surfaces or substrates. The concrete saw includes a multispeed drive for transmitting power from the saw's engine to the saw's cutting blade. The multispeed drive includes a flexible belt for transmitting rotational energy from the drive shaft of the engine to the drive shaft for the blade, and a releasable tension device for placing tension on the belt and ensuring good engagement between the sprockets of the drive shafts. Upon release of the tension device, a user may move the belt to an alternate position on the sprockets and retension the belt, thereby providing a different drive ration and speed for the cutting blade at a constant engine speed.