Abstract: Pickup truck bed tonneau covers and varieties thereof are manufactured using universal components. An outer frame is made from rails cut from universal rail stock. Universal, adjustable corner brackets can be fixed into a desired position to accommodate all different angles at the corners of the tonneau cover. Intermediate cross car rails are cut from universal rail stock and all are coupled to the outer frame via universal intermediate rail brackets. Opposing pairs of universal hinge brackets are used for all hinges of the tonneau cover. Thus, the tooling required to make a variety of tonneau covers is greatly reduced. An elongated step is adjacent to, and protrudes downwardly beyond, a seal coupling channel with a compressible seal extends along the outer frame. The downwardly protruding elongated step member acts as a continuous elongated stop, limiting compression of the seal member.

Abstract: A tonneau cover frame for a pickup truck bed includes a cross-car rail bracket with a predetermined gap for receiving a cross-car bow in a plurality of configurations. The cross-car bow is movable laterally within the cross-car rail bracket to allow for a single cross-car bow in a variety of locations within the tonneau cover frame.

Abstract: A tonneau cover system for a pickup truck bed includes an adjustable corner bracket assembly. The corner bracket assembly includes a pivotally connected lower bracket member, upper bracket member, and cap member. The upper and lower bracket members are movable between an acute rail configuration and an obtuse rail configuration.

Abstract: An actuation assembly for a cover extendable over an open-topped container body from a stowed position to a deployed position includes two actuator mechanisms on each side of the body, each including at least one torsion spring having a base portion and at least one reaction end and at least one reaction post in contact with a corresponding reaction end of the at least one spring. In a first exterior actuator mechanism, the reaction post is connectable to the bail arm, while in the second interior actuator mechanism the reaction post is mountable to the container body. A common shaft extends between the base portions of the spring(s) of each actuator mechanism to transmit torque from the interior spring(s) to the exterior spring(s), serving as a rotating anchor for the exterior actuator mechanism. Only the exterior actuator mechanism is situated outside the side extent of the container body.

Abstract: A soft top fabric cover supported by an internal frame work provides a removal end support rail in closest range to a cargo bed tail gate, contains a latch system which allows coupling or uncoupling of the fabric cover from both left and right side longitudinal rails. Further, both left and right longitudinal rails incorporate a full length downward angled slot which accepts an incorporated receiver located on the outer edges of the fabric cover. Upon tensioning, the fabric cover is securely coupled to its internal frame work.

Abstract: Elongated side rails for attachment to a sidewall of a truck cargo box as a portion of a tonneau cover assembly. Each assembly includes a flexible cover that can be operatively secured to side rails. One side rail includes a securing portion that can be operatively connected to the sidewall; an inclined portion extending from the securing portion, the inclined portion having first and second sides; a connecting member extending downwardly away from the inclined portion from a position located between the first and second sides; and a longitudinal portion extending from the connecting member opposite the inclined portion. To secure the cover to the side rails, hook fastener is preferably attached to loop fastener on the cover. One preferred side rail has a ridge to prevent premature engagement of the fasteners. Another preferred side rail has directional hook fastener to prevent premature engagement of the fasteners.

Abstract: A tonneau cover system for a cargo box of a pickup truck comprising a plurality of tonneau sections each being pivotally coupled to the other to permit pivotal movement of a first tonneau sections relative to a second tonneau sections between an opened position and a closed position. The tonneau cover system further comprises a side rail member connectable to a side wall of the cargo box, a keeper member downwardly extending from the first tonneau sections for pivotal movement therewith between the opened position and the closed position; and a first keeper pin coupled with the side rail member. The keeper member automatically engages the first keeper pin when the first tonneau section is pivoted into the closed position and automatically disengages the first keeper pin when the first tonneau section is pivoted into the open position.

Abstract: A retractable tarp cover for a truck, trailer body or other equipment is adapted to be moved from a retracted position at the front of the truck, trailer body or other equipment to an extended position at the rear of the truck, trailer body or other equipment by means of a rodless cylinder at each side thereof. The tarp is also movable from its extended position to a retracted position.

Abstract: A tension control assembly for a flexible tonneau cover system of a pick-up truck has an adjustable engagement plate and a screw assembly. The adjustable engagement plate has an engagement hook to selectively engage in one of engagement holes formed on a side rail, and further has a positioning hole to position the screw assembly according to the engagement relationship between the engagement hook and the engagement holes, so that the adjustable engagement plate and the screw assembly can be used to adjust and stably keep a longitudinal position of a front header in relation to a length direction of the side rail, so as to prevent from causing vibration noise. Meanwhile, a transverse position of the front header in relation to a width direction of the side rail can be simultaneously adjusted during adjusting the longitudinal position of the front header.

Abstract: A side fastening assembly for a flexible tonneau cover system of a pick-up truck is provided and has a first fastener sewn on an elongated slat by two sewing threads. The first fastener sewn on the elongated slat can ensure the attachment strength of the first fastener, so as to elongate the lifetime of the first fastener and lower the maintenance cost thereof. The side fastening assembly further has a second fastener attached to a flexible cover material of a flexible cover assembly. The first fastener and the second fastener are engaged with each other in a case that the flexible cover material is unrolled rearward on the side rail to cover the cargo bed.

Abstract: A retractable top is disclosed for off-road vehicle such as Jeep® Wrangler® and CJ® brand vehicles. The top includes a frame and a fabric cover designed to cover and move with the frame. The frame includes a base plate that is secured to the belt rail surrounding the rear compartment of the vehicle. The top is deployable between a stowed configuration folded upon itself over the rear compartment of a vehicle and a deployed configuration covering the passenger and rear compartments of the vehicle. During deployment, the top unfolds in a substantially vertical direction over the rear compartment substantially to its full extent. This avoids collision with the rear doors and roll bars of the vehicle. Once so deployed, the entire top pivots downwardly into place covering the passenger and rear compartments of the vehicle.

Abstract: A covering system for vehicles and trailers having a narrow pivot assembly with a moveable arm to help deploy the covering system. The pivot assembly has a gear assembly combined with a spring assembly having the power of multiple springs, which are preferably spiral torsion springs, regarding movement of the arm. The pivot assembly may in turn be mounted in a sliding mechanism for covering various heights of detachable containers.

Abstract: A cover assembly for enclosing a flatbed which generally comprises a support structure including a plurality of support assemblies. Each of the support assemblies has a pair of opposed support legs and a medial portion connected to and extending between each of the support legs. The length of the medial portion of each support assembly can be adjusted to allow the support structure to accommodate the widths of any number of industry-standard sized flatbeds. Each of the support legs can be secured to the flatbed, and at least one cross-member is connected to and extends between a first support assembly and a second support assembly from the plurality of support assemblies. A covering is also positioned over and secured to the support structure.

Abstract: A bracket assembly for securing tarps to a modular bow in a tarp system includes a curved base member that is adapted to be secured to a frame member having adjacent dual channels that extend along an outer surface thereof. A tarp guide is supported on the curved base member. The tarp guide has adjacent dual channels that are separated by a partition. The adjacent dual channels of the tarp guide are adapted to be aligned with the adjacent dual channels of the frame member when the curved base member is secured to the frame member.

Abstract: A cover for a grain hopper for shielding the opening of a hopper opening to shed rain, snow, and debris from entering the hopper opening. The cover generally includes a flexible and water-impervious sheet body adapted to be removably secured over an opening of a grain hopper leading to an auger, wherein the sheet body has a resilient cord extending within a peripheral cavity for wrapping around the outside peripheral edge of the hopper and including multiple bow members for forming an arcuate sheet body over the hopper, wherein the bow members are located along an interior surface of the sheet body and removably engage the inside peripheral edge of the hopper. A flap including fastening material may also be used to extend over the covering of the inlet of the auger. The flap extends from the forward end of the sheet body.

Abstract: A tension control assembly for a flexible tonneau cover system of a pick-up truck has an adjustable engagement plate and a screw assembly. The adjustable engagement plate has an engagement hook to selectively engage in one of engagement holes formed on a side rail, and further has a positioning hole to position the screw assembly according to the engagement relationship between the engagement hook and the engagement holes, so that the adjustable engagement plate and the screw assembly can be used to adjust and stably keep a longitudinal position of a front header in relation to a length direction of the side rail, so as to prevent from causing vibration noise. Meanwhile, a transverse position of the front header in relation to a width direction of the side rail can be simultaneously adjusted during adjusting the longitudinal position of the front header.

Abstract: A relatively lightweight tarping system for use with trailers or other open top containers includes first and second spaced frame members and an elongated flexible member such as a cable or chain connected to and extending therebetween. A tarpaulin may be mounted thereon so that the frame members, flexible member and tarpaulin are pivotable between a covered position atop the open top container and an uncovered position. A four-bar linkage is preferably used in combination with a rotational drive mechanism to provide various advantages in rotating the tarpaulin assembly between the covered and uncovered positions. A width adjustment mechanism is provided to provide usage with trailers or other open top containers of different widths. An improved seal is provided between the tarpaulin and container.

Abstract: A tonneau cover assembly includes a flexible cover, a rigid cross member connected with the cover, and a tensioning and/or latching mechanism connected with the cross member. The flexible cover includes a first end and a second end. The first end is disposed adjacent a cab of a vehicle to which the tonneau covers assembly is configured to attach. The second end is disposed adjacent a tailgate of the vehicle. The rigid cross member connects with the cover such that the cross member moves with the cover as the cover is rolled or folded toward the first end. The tensioning and/or latching mechanism connects with the cross member such that the tensioning and/or latching mechanism moves along with the cover as the cover is rolled or folded toward the first end.

Abstract: A vehicle topper provides an enclosed compartment when coupled with a cargo bed of a vehicle such as a pickup truck. Convenient open access is provided to the bed of the vehicle by employing a rolling door that is supported by a frame within two parallel guide tracks. When the rolling door is in a completely closed position, the vehicle topper creates an enclosed and lockable compartment in conjunction with the cargo bed and the vehicle's cargo box. When the rolling door is moved through the guide tracks to a completely open position, the door is substantially disposed within a sub-floor space between a floor supported by the frame of the vehicle topper, and the vehicle's cargo bed. The rolling door can be caused to bypass the completely closed position and to open in a reverse direction. An outer frame is included to secure the vehicle topper to the walls of the cargo box.

Abstract: A covering system for vehicles and trailers having a narrow pivot assembly with a moveable arm to help deploy the covering system. The pivot assembly has a gear assembly combined with a spring assembly having the power of multiple springs, which are preferably spiral torsion springs, regarding movement of the arm. The pivot assembly may in turn be mounted in a sliding mechanism for covering various heights of detachable containers.

Abstract: The present invention is directed to a tensioning and lock device for achieving a sufficient amount of tension throughout a tarp cover. The present invention is particularly well suited for retractable, tarp cover systems used in the trucking industry, but is also useful in other applications and in other fields. The tensioning and lock device comprises a base and an extending mechanism comprising an actuator. The actuator may be of the hydraulic, pneumatic, or mechanical variation and can be either manually or automatically powered. The present tensioning device is lightweight, compact, easy to install and accomplishes its function in a minimal amount of time.

Abstract: A method for manipulating and securing a tarpaulin across an aperture defining opposed aperture first and second ends, the tarpaulin being secured at one end thereof adjacent the aperture first end and secured to a rod at the other end thereof. With the tarpaulin at least partially rolled around a rod, the tarpaulin is unrolled from the rod and substantially simultaneously the rod is moved across the aperture toward the aperture second end so that the tarpaulin is extended across the aperture as the tarpaulin in unrolled from the rod. After the rod has been moved substantially adjacent to the aperture second end, the rod is inserted in the recess of a hook provided adjacent the aperture second end so as to prevent movements of the rod toward the aperture first end beyond a predetermined location. After inserting the rod in the recess, the tarpaulin is rolled around the rod to move the rod to the predetermined location and create a tension in the tarpaulin to secure the tarpaulin to the hook.

Abstract: Elongated side rails for attachment to a sidewall of a truck cargo box as a portion of a tonneau cover assembly. Each assembly includes a flexible cover that can be operatively secured to side rails. One side rail includes a securing portion that can be operatively connected to the sidewall; an inclined portion extending from the securing portion, the inclined portion having first and second sides; a connecting member extending downwardly away from the inclined portion from a position located between the first and second sides; and a longitudinal portion extending from the connecting member opposite the inclined portion. To secure the cover to the side rails, hook fastener is preferably attached to loop fastener on the cover. One preferred side rail has a ridge to prevent premature engagement of the fasteners. Another preferred side rail has directional hook fastener to prevent premature engagement of the fasteners.

Abstract: A self-contained, vehicle-mounted system for operating a retractable cover with respect to proximate open top containers transported by the vehicle to cover and uncover the containers. The system includes all of the items necessary to accomplish the covering and uncovering of a container and needs only to be mounted on the vehicle and connected to a source of electric power on the vehicle.

Abstract: The present invention is directed to a tonneau cover incorporating a cable system which generates the proper amount of cross-car tension, and still provides for the tonneau cover to be rolled up and stowed when not in use. The present invention is directed to a tonneau cover for a vehicle that is moveable between a stowed position and a deployed position. The tonneau cover has at least one pocket extending along a side of the tonneau cover, and at least one cable disposed in the pocket such that a first end of the cable extends out of a first end of the pocket, and a second end of the cable extends out of a second end of the pocket such that when the tonneau cover is in the deployed position, the cable applies tension to the tonneau cover.

Abstract: A tarp system with a knuckle arm assembly having a housing on an upper arm with a bent enclosure with a flexible torque shaft or universal joint connector substantially within the enclosure, such as an extruded tube. A first end of the flexible torque shaft or universal joint connector may be used in conjunction with a motor, preferably mounted away from the bend in the enclosure to minimize the envelope of the tarp system around a container of a container of a trailer or rail car. A second end of the flexible torque shaft or universal joint connector is attached to an axle shaft for a roller or the like that is used in conjunction with a tarp.

Abstract: A tonneau cover storage system for a vehicle includes a cargo compartment having a first sidewall and a cargo opening. A cavity is formed in the first sidewall. A container is pivotably attached to the first sidewall proximate the cavity at a first pivot point, and has a container opening sized and shaped to selectably fit into the cavity. A lid to selectably close off the container opening is also pivotably attached to the first pivot point and is pivotable independently of the container. A flexible tonneau cover is selectably configurable between a stowed condition within the container and a deployed condition closing off the cargo opening. The container is movable to a position within the cavity when the tonneau cover is in the stowed condition, and is further movable to a position outside the cavity when the tonneau cover is in the deployed condition.

Abstract: A retractable tarpaulin cover system includes a tarp cover, plural spaced substantially U-shaped bows supporting and connected to the tarp cover, movable carriages operably connected to lower ends of each bow, and a tensioning mechanism which moves an end one of said bows toward an endmost position thereof to tension the tarp cover in an expanded position of the cover. The tensioning mechanism includes an elongate brace arm having an upper end which operatively engages an upper or intermediate portion of a vertically extending leg of the end bow, a transmission device which operatively supports a lower end of the brace arm and rotates the arm in a longitudinal direction of the cover system to thereby also move the end bow in the longitudinal direction of the cover system, and a coupling which detachably connects the lower end of the brace arm to the transmission device.

Abstract: A relatively lightweight tarping system for use with trailers or other open top containers includes first and second spaced frame members and an elongated flexible member such as a cable or chain connected to and extending therebetween. A tarpaulin may be mounted thereon so that the frame members, flexible member and tarpaulin are pivotable between a covered position atop the open top container and an uncovered position. A four-bar linkage is preferably used in combination with a rotational drive mechanism to provide various advantages in rotating the tarpaulin assembly between the covered and uncovered positions. A width adjustment mechanism is provided to provide usage with trailers or other open top containers of different widths. An improved seal is provided between the tarpaulin and container.

Abstract: The removable enclosure for the rear of a vehicle provides additional storage space or cover for the open rear end of a vehicle, such as an open tailgate of a pickup truck or the open hatch of an SUV. The removable enclosure includes a housing having at least one sidewall and an upper wall defining an open lower end and an open front end. An internal frame is disposed within and supports the housing. The internal frame includes at least one elastic cord extending laterally across the housing. A pair of laterally opposed diagonal supports each extend from an upper edge of the front end of the housing to a lower edge of a rear face of the at least one sidewall. The at least one elastic cord is secured to, and extends between, the pair of laterally opposed diagonal supports.

Abstract: A tonneau cover assembly includes a flexible cover, a rigid cross member connected with the cover, and a tensioning and/or latching mechanism connected with the cross member. The flexible cover includes a first end and a second end. The first end is disposed adjacent a cab of a vehicle to which the tonneau covers assembly is configured to attach. The second end is disposed adjacent a tailgate of the vehicle. The rigid cross member connects with the cover such that the cross member moves with the cover as the cover is rolled or folded toward the first end. The tensioning and/or latching mechanism connects with the cross member such that the tensioning and/or latching mechanism moves along with the cover as the cover is rolled or folded toward the first end.

Abstract: A tonneau system for a vehicle bed includes a rail disposed on a top portion of the vehicle bed. A tonneau cover extends over the vehicle bed and includes an elongate retention clip is adjacent the rail and is connected thereto by an interference fit. The elongate retention clip includes a removal tab. A connection clip is slidable along the linear extent of the rail. An elongate band is slidably received in the tonneau cover and in a band aperture of the connection clip.

Abstract: A protective cover assembly for covering a space. The assembly includes a frame having rails. A material is disposed over the frame for covering the space. A plurality of fastening devices are disposed through to the material for securing the material to each of the rails. An anchor is secured to the second rail. A plunger extends from either the anchor or the first rail and defines an operational axis. The plunger slidably engages the other of either the first rail or the anchor for guiding the first rail between a first position relaxing the material and a second position tightening the material. The fastening device includes a cap, fingers and a retaining member engaging the fingers for capturing the material between the cap and the retaining member.

Abstract: A tonneau system for a cargo box of a vehicle having at least one panel section having opposing edge members. The edge members each have a downwardly extending cam surface engagable with opposing sides of the cargo box of the vehicle to generally self-center the panel section between the opposing sides of the cargo box.

Abstract: A cover assembly for enclosing a flatbed which generally comprises a support structure including a plurality of support assemblies. Each of the support assemblies has a pair of opposed support legs and a medial portion connected to and extending between each of the support legs. The medial portion of each support assembly including means for adjusting the length of the medial portion to allow the support structure to accommodate the widths of any number of industry-standard sized flatbeds. The cover assembly also includes means for securing each of the support legs to the flatbed, at least one cross-member connected to and extending between a first support assembly and a second support assembly from the plurality of support assemblies, a covering positioned over the support structure; and means for securing the covering to the support structure.

Abstract: The invention consists of a system for connecting tarps to a vehicle, comprising: a) bows for supporting tarps, the bows comprised of: i) one or more tarp connectors, each of the tarp connectors having a pair of channels for accepting a support pole and ii) one or more corner connectors adapted to receive an end of one of the tarp connectors; b) a plurality of tarps, each tarp secured to the tarp connectors by wrapping the tarp around the support pole and inserting the support pole into the channel of the tarp connector, wherein the bows are combined with the tarps to create an enclosed cargo area for the vehicle.

Abstract: A clamp assembly is disclosed for a tonneau cover for a vehicle wherein the clamp assembly includes a plurality of spacers disposed therein to facilitate installation thereof on a variety of vehicle types and styles.

Abstract: A tonneau cover storage system for a vehicle includes a cargo compartment having a first sidewall and a cargo opening. A cavity is formed in the first sidewall. A container is pivotably attached to the first sidewall proximate the cavity at a first pivot point, and has a container opening sized and shaped to selectably fit into the cavity. A lid to selectably close off the container opening is also pivotably attached to the first pivot point and is pivotable independently of the container. A flexible tonneau cover is selectably configurable between a stowed condition within the container and a deployed condition closing off the cargo opening. The container is movable to a position within the cavity when the tonneau cover is in the stowed condition, and is further movable to a position outside the cavity when the tonneau cover is in the deployed condition.

Abstract: An expandable grain tank is provided for covering the open end of a grain tank of an agricultural combine. The expandable tank includes a tarp and a support structure for raising and lowering the tarp. The support structure is configured with an upper frame, a plurality of expandable legs connected to the upper frame and the grain tank, and an actuator to expand and retract the expandable legs. The expandable tank is configured to be moved between a retracted position and an expanded position.

Abstract: A tarpaulin structure for covering a cargo space and used in combination with a support and retraction system includes a body and an openable sleeve for a plurality of the cross supports of the system. Connectors hold the sleeves closed about the cross supports. The tarpaulin system may be installed onto and removed from the cross supports of a tarpaulin support and retraction system without requiring the user to disconnect the cross supports from the drive cables.

Abstract: A retractable tarpaulin cover system includes a tarp cover, plural spaced substantially U-shaped bows supporting and connected to the tarp cover, movable carriages operably connected to lower ends of each bow, a tensioning mechanism which moves an end one of said bows toward an endmost position thereof to tension the tarp cover in an expanded position of the cover, and a tension distributing mechanism which distributes the tension of the tarp cover between the end bow and another of said bows adjacent to said end bow. The tension distributing mechanism includes a collapsible brace interconnected between the end and adjacent bows.

Abstract: A tonneau cover and a method of operating a tonneau cover that covers a cargo box on a pickup. The tonneau cover is positionable in a closed configuration, a rolled-up configuration and a front access configuration. The method includes rolling up the tonneau cover to uncover a first part of the cargo box. The method also includes pivoting a portion of the tonneau cover to uncover a second part of the cargo box.

Abstract: The removable enclosure for the rear of a vehicle provides additional storage space or cover for the open rear end of a vehicle, such as an open tailgate of a pickup truck or the open hatch of an SUV. The removable enclosure includes a housing having at least one sidewall and an upper wall defining an open lower end and an open front end. An internal frame is disposed within and supports the housing. The internal frame includes at least one elastic cord extending laterally across the housing. A pair of laterally opposed diagonal supports each extend from an upper edge of the front end of the housing to a lower edge of a rear face of the at least one sidewall. The at least one elastic cord is secured to, and extends between, the pair of laterally opposed diagonal supports.

Abstract: A tonneau cover system for use in conjunction with a storage bed having an upwardly directed opening. The tonneau cover system includes a frame portion and a cover portion. The frame portion includes a first mounting track, a second mounting track, a first frame member, a second frame member a first hinge mechanism and a second hinge mechanism. The first frame member has a first end and a second end. The second frame member has a first end and a second end. The first hinge mechanism operably attaches the first ends of the first frame member and the second frame member to the first mounting track. The second hinge mechanism operably attaches the second ends of the first frame member and the second frame member to the second mounting track. The cover portion extends over the frame portion.

Abstract: A relatively lightweight tarping system for use with trailers or other open top containers includes first and second spaced frame members and an elongated flexible member such as a cable or chain connected to and extending therebetween. A tarpaulin may be mounted thereon so that the frame members, flexible member and tarpaulin are pivotable between a covered position atop the open top container and an uncovered position. A four-bar linkage is preferably used in combination with a rotational drive mechanism to provide various advantages in rotating the tarpaulin assembly between the covered and uncovered positions. A width adjustment mechanism is provided to provide usage with trailers or other open top containers of different widths. An improved seal is provided between the tarpaulin and container.

Abstract: A self-contained, vehicle-mounted system for operating a retractable cover with respect to proximate open top containers transported by the vehicle to cover and uncover the containers. The system includes all of the items necessary to accomplish the covering and uncovering of a container and needs only to be mounted on the vehicle and connected to a source of electric power on the vehicle.

Abstract: A tarping system for removably covering the open top of a container resting on a platform of a truck frame, or directly on the truck frame, includes a cover support structure extending upwardly from the pivoted platform, a tarping frame displaceably secured to the cover support structure, a covering medium secured to the tarping frame and dimensioned to protectably cover the container open top, a power system extending between the cover support structure and the tarping frame for raising the tarping frame and thereby the covering medium above the container open top to permit the container to be removed from the truck frame.

Abstract: The invention provides a canopy (10) for an open load carrying vehicle (20), such as a pickup truck. The canopy (10) includes an expandable frame comprising a plurality of frame members (52) which are mountable on a load bed (24) of the vehicle (10) such that the frame members (52) are slidably displaceable relative to the load bed (24) to vary the size of the frame. The frame is operable between a retracted condition on the one hand, and, on the other hand, an expanded condition in which the frame extends from a front of the load bed (24) to its rear. A canvas covering (50) is positioned over the frame members (52), and the canopy (10) includes a powered drive means which is drivingly connected to the frame for powered displacement of the frame between its contracted condition and its expanded condition.

Abstract: A cargo box tonneau system includes a system frame and cover. The tonneau system also includes a bow member supported by the system frame. The bow member is coupled to the cover, and the bow member applies biased tension to the cover in a cross vehicle direction. The tonneau system further includes an elongated member coupled to the cover and a bow member supported by the system frame. The bow member includes a bow channel that receives the elongated member such that the cover is engaged with the bow member. The tonneau system also includes a rear frame rail assembly coupled to the cover and to the system frame at each end to facilitate tailgate movement.

Abstract: A tonneau cover is provided that is attached at its most forward end to an adjustable tensioning rail which spans the front end of a pickup truck box. The tensioning rail is adjustably attached at its outside edges to two side rails which are attached to the inside of a pickup box. The adjustable attachment of the tensioning rail to the side rails is accomplished by the use of a tensioning screw and two attachment blocks. As the tensioning screw is moved forwards and backwards by the use of the adjustment knob, the tensioning rail is moved in a corresponding manner. This adjustment is preformed when the tonneau cover is in the open position, and thus, allows a user to obtain the desired amount if tightness when the tonneau cover is subsequently placed in the closed position.