Abstract: A quick connect dozer frame assembly is disclosed. The frame has a plurality of attaching points which interconnect with complementary latching members on an associated tractor for quickly connecting the dozer frame thereto. For conventional framed, rear wheel drive tractors, the dozer frame extends beneath the tractor to engage a rearwardly located tractor frame member. Where the tractor is an articulated frame vehicle, the dozer frame engages latching members on side plates mounted on the tractor.

Abstract: A vehicle mounted accessory unit assembly is provided that is removably mountable to a vehicle, the accessory assembly including a support frame having a first and second portion that are connected at a pivot point, with the pivot point enabling forces to be directed in such a way as to minimize the stresses on the vehicle to which the accessory unit assembly is attached. The accessory unit assembly further includes a wheel assembly to further minimize the stresses on the vehicle. The wheel assembly preferably includes a ground engaging wheel, a mounting member, a spring assembly and a dampener. A steering dampener is also utilized.

Abstract: The snowplow of the present invention is adapted to mount to the bed of a pickup truck. The snowplow includes a mounting base and a frame which is rotatably coupled to the base. The snowplow blade is coupled to the frame so that it moves with the frame. By attaching a prime mover to the frame and base, the blade can be raised and lowered over a very wide range. The frame and blade are adjustable so that the same snowplow can be used on trucks with differing heights or with lift kits.

Abstract: A side plow assembly for an automotive vehicle, particularly a lightweight vehicle such as a lightweight truck, pick-up or like vehicle, and then particularly a four-wheel drive vehicle. The assembly includes a plow share mounted on one side of the vehicle. Seen in the normal direction of travel of the vehicle, the front end of the plow share is pivotally connected to the vehicle chassis by a joint. The rear part of the share, as seen in the travel direction, is connected to a rear chassis part by an elongated brace whose length can be varied for adjustment of the angle of the side share in the horizontal plane relative to the travel direction. The brace is also pivotally connected to the chassis. The assembly also includes a lifting device which is connected between the plow share and the vehicle and functions to lift the share away from a ground surface and to lower the share into contact with the ground surface respectively.

Abstract: A snow plow lift system in kit form to modify an existing manually actuated hydraulic snow plow control mounted on a vehicle for automatically lifting a snow plow when the vehicle is placed in reverse. The system uses a solenoid to actuate the hydraulic piston which raises the plow, the solenoid being energized by a back up light on the vehicle.

Abstract: A snow-plow system having four major features: lighting system, a quick and easy disconnect/connect system, a reactive controlled pressure mechanism for applying a controlled pressure to the bottom edge of the moldboard of the plow, and a simple electric control to activate or deactivate the reactive controlled pressure mechanism. The present invention may be summarized as a snow-plow system that is mounted to a vehicle having a mounting frame by an easy connect and disconnect system connecting to the A-frame of the snow-plow by use of three mounting pins which hold the snow-plow system in place on the mounting frame of the vehicle and thereby rigidly connect the system to the vehicle. A light bar or lighting system also is rigidly mounted to the A-frame of the snow-plow at the mounting pins so that once the position of the lighting system is determined the relative position of the lighting system with respect to the vehicle does not change.

Abstract: A mount and lift assembly for hydraulically driven snow blades or other accessories that includes a chassis frame for mounting to the vehicle chassis; a lift frame mount readily removably coupled to the chassis frame; an A-frame mount readily removably coupled to the chassis frame, the A-frame supporting an actuator drive such as an electric/hydraulic pump to drive the snow blade; a blade trip frame coupled to the A-frame; and a snow blade removably coupled to the trip frame.

Abstract: A snowplow (20) adapted for being attached to or detached from a vehicle (22) having a frame (24). The snowplow includes a mount frame (26) for connection to the vehicle frame, a support frame (32), a lift assembly (38) and a blade assembly. The blade assembly of the invention includes a blade (30), a blade cutting edge (31) and a wheel support assembly (56). The support frame includes a forward end (33) for supporting the blade and a rearward end (36) for connection to the vehicle. When detached from the vehicle as a single unit, the resultant weight on the rearward end of the support frame may be supported on a ground surface (46) by a jack stand (48).

Abstract: A hydraulic system used in conjunction with a standard pickup truck and the like for powering a snowblower and other implements. The hydraulic system provides power for controlling up and down movement of a snowblower and for driving the snowblower's auger and fan. The hydraulic system, which only minimally impacts the pickup truck's horsepower output, is designed so that all of its mechanical components may be placed within the truck's engine compartment. The hydraulic system can be easily connected to and removed from a truck's existing engine mount, and the snowblower unit itself is designed so that it may be easily attached to the vehicle.

Abstract: A snowplow blade assembly is provided wherein the plow blade is provided with pivotable end extensions that are each pivotable through an angle greater than about 175.degree. from a fully extended and retained blade end extending configuration to a fully folded and retained blade length reducing and extension storage configuration. The mid-back region of the blade is joined to a plow support means that is in non-interfering relationship with the pivotable blade end extensions. Manual weight lifting and supporting operations by an operator are completely avoided.

Abstract: A snow plow mounting frame assembly is capable of being attached to nearly any type of four wheeled vehicle having a chassis, and is capable of mounting thereon nearly any make and model of commercially available snow plow blades. The mounting frame assembly includes a horizontally disposed, heavy duty bumper member which is mounted on the chassis of the vehicle, and a pair of spaced-apart, vertically disposed support members which are mounted on the bumper member forwardly thereof. A pair of lateral support arms, one for each support member, each have one end pivotally attached to the lower portion of its respective support member and its other, opposite end pivotally attached to the chassis of the vehicle. A tube having a plurality of plates is releasably and adjustably attached to the lower portions of the support members for mounting a snow plow blade thereon.

Abstract: A hydraulic system includes a double acting hydraulic cylinder for suitably supporting a snow wing on an articulated motor grader in a fixed roading position. The hydraulic system is provided with a pressure relief circuit that permits the motor grader to be articulated without manual adjustment of the hydraulic pressure in the hydraulic cylinder.

Abstract: A quick hitch-unhitch attachment for mounting a snow working implement on a vehicle, comprising a vehicle mount attachment (VMA) frame secured to the vehicle, has a pair of spaced sockets which are positioned below and behind the vehicle bumper when mounted on the vehicle. A first pair of reaction bearing surfaces are aligned with and to the rear of the spaced sockets and a transverse latch bar means extends transversely of the sockets. An intermediate support frame has a rearward end with a pair of latching arms extending in a rearward direction and in general alignment with the sockets, respectively. Each latching arm has a further reaction bearing surface for bearing against respective ones of the first pair of reaction bearing surfaces. A support frame has a forward end attached to the snow working implement and a rearward end pivotally connected to the intermediate frame for rotation about a horizontal axis.

Abstract: An apparatus, for stabilizing a plowing implement mounted on a motor vehicle, comprising a rigid stabilizer member having first and second opposed ends. One end of the stabilizer member supports an attachment device for attaching the stabilizer member to a plowing frame secured to a motor vehicle. The attachment device allows pivoting motion of the stabilizer member relative to the plowing frame. The second end of the stabilizer member has an abutment surface for abutting against a pivotable portion of the plowing implement when the plowing implement is raised into travel position. The stabilizer member is pivotable into an inoperative position where complete freedom of movement of the plow is achieved and an operative position by a control mechanism. When the stabilizer member is in its operative position, the abutment surface abuts against a pivotable portion of the plowing implement to minimize undesired bouncing of the plowing implement while the vehicle is traveling on a roadway.

Abstract: The extendable drag plow provided by this invention has a laterally-fixed center section, and moveable outer sections positioned by a controllable actuator system. The moveable plow sections are equipped with followers engaging oppositely-extending pairs of guideways in the central plow section, with the actuators positioned between these pairs. A lifting actuator extends between pivotal connections to a bracket mounted on the vehicle and a terminal fixed with respect to the central plow section. Drag arms are also pivotally connected to a bracket mounted on the vehicle and are secured at their opposite end to the central plow section. A diagonal brace extending between the top portion of the central plow section and the drag arm is also used as a terminal for the actuator.

Abstract: A control device for controlling the position of a snowplow mounted on the front of a vehicle is disposed in the cab of the vehicle and is selectively mountable in any one of a plurality of locations in the cab to facilitate access to the control device in accordance with the preference of the vehicle and snowplow operator. The control device includes a housing supporting manually operable pushbutton switches which control the selectable plow positions. The housing is provided with one component of a two component separable fastening arrangement, the second component of which is mounted in the cab in one or more of a plurality of selectable positions, such as on the dashboard, armrest, console, gearshift lever or clothing worn by the vehicle operator, whereby the control device can be positioned in a location most convenient to the operator.

Abstract: A rotary broom is mounted on the front of a vehicle, such as a tractor. The broom can be pivotally raised and lowered as well as pivoted sideways. The broom is rotatably mounted in bearing blocks which are removably supported by a generally C-shaped frame so that the broom can be removed easily for repair or replacement. A hinged hood is located above the broom and can be open for easy access to the broom. The broom is rotated by a central drive located in a middle portion of the broom so that no drive components extend beyond the sides of the frame, to eliminate interference with curbs and the like. The bearing blocks are mounted on extensions below the frame also to reduce possible interference. The broom assembly also has a hydraulic ram with a floating piston which enables the broom to contact the surface being cleaned with less pressure, causing substantially less wear on the broom bristles.

Abstract: The present invention makes beneficial use of, rather than replacing, a vehicle's snowplow headgear by combining the headgear with a tire/wheel mounting assembly. A headgear includes a lower horizontal support member parallel to the ground at about frame level, and a pair of substantially vertical uprights connected to the ends of the horizontal support member to form, when viewed from the front, a U or O-shaped support headgear structure. A power ram with a base is normally removably secured in a receiving socket on horizontal support member that forms the bottom of the "U/O" of the headgear. That ram is removed and the tire/wheel assembly is securely mounted in its place.

Abstract: A hydraulic system for a hydraulic-piston-lifted snowplow adapted to scrape a surface (e.g., a snowplow for scraping snow and ice off pavements) is shown. To save unnecessary wear on the snowplow blade, the system can be operated to allow less than the full weight of the moldboard and blade to rest on the surface being scraped. In the operation of the plow, a fraction of the moldboard and blade weight selected, the magnitude of an instantaneous deviation therefrom is measured and converted into an electrical signal, and a servo-operated control valve is actuated in response to said signal for bypassing more or less hydraulic fluid away from piston in connection of the hydraulic lift given the moldboard and blade by the piston.

Abstract: An improved universal adjustable snow plow apparatus that is connectable to a vehicular rear for plowing snow and the like. The plow apparatus employs a plow blade with a pair of vertically oriented plate supports; a stabilizing and supporting subassembly including a horizontal draw bar and a post; an elevating subassembly including a pair of spaced stabilizing arms and fluidic cylinder actuated pair of end adjacent adjoining links; and a cooperating plow orientation adjustment system. This adjustment system includes plow tilt regulating means and plow height regulating means. The blade is preferably provided with a replaceable elongated ground engaging scraper bar.

Abstract: A rear mounted grader for vehicles comprises a plate member adapted to be vertically secured to the vehicle frame behind the wheels. A pair of rearwardly extending arms are pivotally mounted on the plate member and are provided with a sliding member securely mounted between the arms. A grader blade is transversally disposed relative to the arms and is secured thereunder at the rear end thereof. A hydraulic piston is pivotally secured at one end to the plate member above the pair of arms and to the sliding member at the opposite end for raising and lowering the blade from a position above the ground to an abutting position with the ground, whereby upon actuation of the piston, the blade is adapted to selectively abut against the ground for grading the ground or be lifted therefrom. The grader is preferably provided with spring blades mounted behind the sliding member between the latter and the pair of arms.

Abstract: A quick hitching device for detachably mounting an attachment such as a snow plow or a rotary brush to the frame of a road vehicle. The device comprises a quick hitching sub-frame that is detachably connectable to the bottom of the frame of the vehicle, and tiltable with respect to this frame about a first transversal pivot when its rear end is not connected. The device also comprises an attachment supporting sub-frame having a rear end hingedly connected to the hitching sub-frame about a second transversal axis parallel to the first axis, and a longitudinal extensible power jack having one end pivotably attached to the front portion of the hitching sub-frame above the second axis and another end pivotably attached to the front end of the supporting sub-frame.

Abstract: A novel means of attaching a plow frame to a vehicle frame is described. The attachment means includes ears on both the plow frame and the vehicle frame. The ears are joined together by pins that are inserted through holes in the ears. The ears are shaped in such a way that they can be forced into alignment using the plow's lifting device. when the ears are held in alignment this way the coupling pins can be easily inserted. This greatly eases the coupling of the plow to the vehicle.

Abstract: A support arrangement for a blade of a construction machine is disclosed where the blade is located to one side of the construction machine. The support arrangement includes two support towers spaced in the length of the frame of the machine with these support towers accommodating variation in the elevation of the blade. The blade is pivotally secured at a forward end thereof to one of the support structures and secured adjacent the other end of the blade to the other support structure by means of two hydraulic cylinders which extend outwardly from the support structure. These hydraulic cylinders also include an arrangement for controlling the angle of the two hydraulic cylinders relative to the connected support structure. The arrangement for controlling the angle of the two hydraulic cylinders accommodates limited, rapid upward movement of the blade.

Abstract: A device for attaching a plow to the front of a vehicle is described. It secures to the plow mechanism and serves to raise it in a balanced manner for convenient attaching to the vehicle.

Abstract: A lift mount assembly is provided for a plow blade unit mounted on the frame of a vehicle. The assembly includes a housing unit which is permanently attached to the vehicle frame beneath and behind the bumper including two tube members extending away from the vehicle and similarly recessed. A support unit is designed to be quickly removed from or attached to the housing unit by two tube ends insertable into the housing unit tube members and held in place releasably. The support unit includes a specially configured tube extending forwardly then upwardly away from the vehicle where each end is attached, and meeting at a bight portion. A tubular brace member is spaced apart from and parallel to the bight portion. The support unit further includes a pair of bight portion clevis mounting members on the bight portion and another pair of brace member clevis mounting members on the brace member pivotally attached to the lift arm and the lift arm actuator, respectively.

Abstract: The rear-mounted scraper of this invention is adapted for attachment to the rear of a vehicle which has a rear bumper, bottom and a rear axle. The rear-mounted scraper has a hitch with portions adapted for attachment to the bottom of the vehicle and portions defining pivotal attachment points which define a horizontal pivot axis. The pivot axis of the attached hitch is spaced from the rear axle and the rear of the vehicle and is beneath the bottom of the vehicle. The plow also has a scraper assembly which has a blade an extension which extends forward from the blade and is pivotally mounted at the hitch pivot points to enable the scraper assembly to pivot about the horizontal pivot axis.

Abstract: To ease the mounting of a snow plow structure by use of a measured means extending between the attaching structure fixed on a vehicle and its lift chain to bring the hitch pin holes of plow structure push arms into vertical alignment with pin holes on attaching structure as the plow structure is lifted from its center of gravity and in fore and aft balance. Little movement, if any, of the lifted plow structure will be needed to transversely align pin holes for the full insertion of the hitch pins. A single pull cable is connected to two spring actuated hitch pins to pull them from the pin holes on the vehicle mounted attaching structure when connecting the plow structure thereto. Upon release of the pull cable the pins will enter the transversely-aligned pin holes of the structures. All this having been done with little manual effort.

Abstract: A vehicle rear mounted snow plow apparatus for plowing within a foot of a permanent structure, including a vehicle supported snow plow actuating mechanism for raising and lowering the snow plow, and linkage for tilting the snow plow to remove snow or to position the plow to push snow in front of the plow. A hydraulic system for moving the actuating mechanism up or down. A pair of stabilizing and pivoting arms to pull said plow in the plowing position and to partially support the snow plow while traveling.

Abstract: An implement interface, comprising first and second spring actuators comprising respective first apparatus for attaching the interface to an implement and second apparatus for attaching the interface to a source of mechanical power. A spring is stressed between the spring actuators. The interface is adapted to apply downwardly directed force to the implement. Method of moving media is also disclosed.

Abstract: A lift mount assembly is provided for a plow blade unit mounted on the frame of a vehicle. The assembly includes a housing unit which is permanently attached to the vehicle frame beneath and behind the bumper including two tube members extending away from the vehicle and similarly recessed. A support unit is designed to be quickly removed from or attached to the housing unit by two tube ends insertable into the housing unit tube members and held in place releasably. The support unit includes a specially configured tube extending forwardly then upwardly away from the vehicle where each end is attached, and meeting at a bight portion. A tubular brace member is spaced apart from and parallel to the bight portion. The support unit further includes a pair of bight portion clevis mounting members on the bight portion and another pair of brace member clevis mounting members on the brace member pivotally attached to the lift arm and the lift arm actuator, respectively.

Abstract: A mounting bracket for mounting the rear post of a side wing plow is provided wherein the bracket is adapted to be mounted to the frame of the snow plowing vehicle. The side wing plow includes a rear post with a carriage for mounting the side wing plow. At least a semi-cylindrical member is located on the post on the opposite side and it has a longitudinal axis parallel to the post. The bracket mounted to the vheicle frame includes at least a concave arcuate seat member having a vertical axis for receiving the semi-cylindrical member such that the post can be rotated through a definite angle in the arcuate seat and the semi-cylindrical members are welded in the seat at an angle which has been selected for the particular vehicle on which the side wing plow has been mounted.

Abstract: A snowplow mounting apparatus for use on trucks and the like is provided in which a pair of clam-shell plates are mounted on the front of the truck in place of the usual bumper. The plates are pivotally joined together at the top. The removed bumper is mounted on the outer plate of the clam-shell and the actuating hydraulic cylinder is mounted within the clam-shell where it is fully protected. The plow blade is mounted on the outer clam-shell with a quick disconnect feature and a pair of cam surfaces is mounted on the inside of the clam-shell plates. The hydraulic cylinder through cam followers cooperatively engaging said cam surfaces force the plates apart about the pivot point of the clam-shell which raises the plow from engagement with the surface being plowed.

Abstract: This patent relates to a hydraulic system for a vehicle mounted, power operated plow blade. The power unit attached to the vehicle in the front bumper area includes a fluid reservoir, a pump in the reservoir and the lift cylinder for producing vertical movement of the blade. The hydraulic system includes four way, three way, and two way valves, all along with the necessary passages and ports provided in a unitary, manifold block attached directly to the side of the power unit. The four way valve controls flow to and from the reservoir relative to the three way valve and one of the angling cylinders for the blade. The three way controls flow to and from the four way valve relative to the other angling cylinder and the lift cylinder. The two way valve controls fluid flow to and from the lift cylinder relative to the three way valve.

Abstract: A side wing blade assembly for a vehicle, comprising an elongated blade, an articulated coupling between the front end of the blade and the vehicle, and an articulated attachment system to connect the rear end of the blade to the vehicle. The articulated attachment system includes a pair of vertically spaced apart and generally parallel arms, each of these arms including one end universally mounted to the rear end of the blade and another end universally mounted to the vehicle. A fluid ram having one end connected to the vehicle and another end slidingly engaging one of the arms is used for raising the blade off the ground toward a retracted position. Stops are provided on the arm receiving the fluid ram in order to limit the sliding movement thereon, forcing the fluid ram to act as a dampener as a result of an excessive upward movement of the blade caused by an impact on an obstacle.

Abstract: A lightweight snow plow apparatus for attachment to the front of a vehicle comprises an aluminum moldboard swivelly mounted in an easily removable manner on the ends of tubular telescopic side beams of an aluminum H-frame, the other ends of the side beams being removably pivoted to a pivot tube mounted on the frame of the vehicle. The side beams are telescopically moved to angle the moldboard by a rack and pinion mechanism housed in the side beams and in the cross beam of the H-frame and which is driven by an electric motor, connected to the electrical system of the vehicle, through a gear box that includes a slip clutch to prevent overloading. The H-frame and moldboard are lifted off the ground and lowered to the ground by an electric motor driven linear actuator, connected to the electrical system of the vehicle, which is pivoted to the cross beam of the H-frame and mounted on a bracket which is removably supported on the front bumper support of the vehicle.

Abstract: A snow groomer vehicle hydraulic hose guide having a hard plastic removable insert installed within a metallic back-up ring, for use upon snow grooming vehicles and associated equipment. The insert has a very smooth surface and is shaped to provide substantial hose contact area. The guide ring substantially extends the useful life of the rubberoid hydraulic hoses widely used on such equipment.

Abstract: A snow plow assembly adapted for mounting on a vehicle. The snowplow assembly includes a conventional blade mounted on the front of the vehicle and powered with conventional hydraulic systems. The snow plow assembly also includes a blade mounted on the rear of the vehicle which may be raised or lowered and maintained in a selected position by hydraulic ram and which may be tilted in pitch. Diverter switches permit the vehicle operator to selectively use a single control for either changing the angle of the front plow in a horizontal plane or either for raising or lowering the rear blade or for tilting the pitch of the rear blade. Thus, the snow plow assembly can readily be adapted and retrofitted on vehicles possessing conventional front blades. A method of using the snow plow assembly is also disclosed.

Abstract: Adjustment device in a vehicle having a plow for plowing snow and the like so that when the vehicle is traveling in a forward direction the plow is moved between a raised position and a lowered position, and signal means for sending a signal indicating movement of the vehicle in a reverse direction. The improvement comprises control device for sensing the signal and activating the adjustment device to raise the plow to the raised position. The control device is further deactivated in the absence of the signal to lower the plow to the lowered position.

Abstract: A tractor side blade mount includes a control member, a blade holding bracket, a blade, a joint member for mounting the blade on the blade holding bracket, and a pair of hydraulically actuated arms for independently positioning the control member and the bracket. As a result of selected positioning of the control member and the bracket, the blade, which is mounted at one end of the bracket, may take up various angles, heights and lateral displacements with respect to the body of the tractor. The versatility in the movement of the blade results in an increased capability to grade earth, scrape dirt, or dig trenches alongside structures and in areas which would otherwise be out of reach of a conventionally equipped tractor.

Abstract: The mechanism comprises in combination an upstanding frame mounted to the front of the chassis of a land vehicle and adapted to mount a front plow assembly, and a side frame mounted to the side chassis of the land vehicle for mounting a side wing plow. Both the front and side frames include a sub-frame pivotally mounted to the lower portion of the upstanding frame, hydraulic means for moving the sub-frame in an arc between a retracted and an extended position. The sub-frame has a free end mounting an engagement member remote from the pivot axis and adapted to engage a sub-frame on a plow assembly frame. The sub-frame on the plow assembly includes a hook member open downwardly and adapted to receive the engagement member of the free end of the first sub-frame and locking means associated with the first and second sub-frames for locking the first and second sub-frames together when the engagement member is engaged within the hook member and the pivoted sub-frame is in a retracted position.

Abstract: A locking mechanism for a fluid actuated snowplow which automatically locks the moldboard unit of the plow in a desired position and simultaneously therewith relieves the pressure on the fluid drive unit whereby the locking mechanism and not the drive unit accept the plowing stresses.

Abstract: A snow plow, designed to fit on small vehicles, is disclosed. The plow has a single point connection to the vehicle. A novel yoke mounting scheme is also disclosed, which enables the blade to be angled. The plow is operated by a pneumatic means, controlled from within the vehicle. All operating connections to the vehicle are made through a single power cord. All pneumatic lines are self contained within the plow, thereby eliminating the need for air hoses to be connected or installed on the vehicle. The plow has an upstop device that is used to block upward travel of the plow. The upstop is used to prevent the plow from obscuring the headlights of the vehicle. An uplock is also provided which acts to lock the plow blade in an non-operating position when the plow is not needed, thereby preventing the possibility of the blade dropping to the road and causing an accident. The plow is designed to be removed quickly and easily from the vehicle for storage.

Abstract: A scraper located in front of each automobile drive wheel to remove snow on the ground, including a scraper blade on a lower end of a piston rod extending from a vertical hydraulic cylinder supported on the vehicle chassis.

Abstract: There is provided an improvement in a device for mounting a plow blade onto the front of a motor vehicle. The mounting device includes a frame member having a forwardly facing, first end and a rearwardly facing second end, means for mounting the blade onto the first end of the frame member known as an A-frame and means for securing the A-frame at the second end onto the vehicle for pivotal movement about the first axis extending transversely across the front of the vehicle. This type of blade mounting device also includes a lift means for pivoting the A-frame or frame member upwardly about the first axis and against the weight of the plow blade to raise the plow blade from its plowing position. This lift means also allows the A-frame by the weight of the A-frame and plow blade to pivot downwardly into the lowered plowing position when desired.

Abstract: A prime mover (A) has an arm assembly (B) pivotally connected thereto. A cutting assembly (C) is operatively connected with the arm assembly to be positioned thereby. The arm assembly is connected to the tractor to pivot about both vertical and horizontal axes such that the cutting means is positionable fore-and-aft as well as up and down. A hydraulic control circuit (D) controls the position of the arm assembly. The control circuit includes a first through-rod-type hydraulic cylinder (60) which includes a piston (62) slidably disposed therein to divide the cylinder into two equidiameter chambers (64, 66). A through-rod (68) is connected with the piston and extends through both chambers of the cyylinder. The hydraulic cylinder and the piston rod each have the same diameter in both chambers such that as the piston moves, one of the chambers draws the same amount of fluid as the other chamber discharges.

Abstract: A snow plow especially suitable for use with small vehicles, such as cars, is disclosed. The snow plow features a hydraulic system for controlling movement of the plow from side to side as well as for elevating the plow. The snow plow of the present invention also includes a coupling system which permits the plow to be quickly coupled to the vehicle for snow plowing and quick removal of the plow when the vehicle is to be used for its conventional purposes. The hydraulic system may be mounted either on the plow support frame or to the subframe assembly which is attached to the underside of the car.

Abstract: A horizontally elongated and laterally opening shroud is provided having one open longitudinal front side and one closed longitudinal rear side as well as opposite end mounting structures at least substantially closing the opposite ends of the shroud. A pair of spiral bladed rotary conveyor members are journalled in the opposite end portions of the shroud for simultaneous rotation about an axis extending longitudinally of the shroud and the closed rear side of the shroud includes a lateral outlet centrally intermediate the mounting structures and with which the horizontal axial inlet of a snow blower including an upwardly opening tangential outlet is registered. The opposite ends of the shroud include vertically adjustable transverse skids and the conveyor members are driven by a fluid motor supported from one of the mounting structures.