An operation unit includes a lever shaft having an operating lever at one end thereof and orthogonal to the operating lever, a plate with a flange having a bearing of the lever shaft, the other end-side of the lever shaft being arranged with penetrating the plate with a flange from a front surface thereof, a rotation restraint part for the lever shaft fixed to the lever shaft behind the plate with a flange and having a self-return function of forward and reverse rotations of the lever shaft, a cover with a flange covered on a backside of the plate with a flange in a form of sandwiching the rotation restraint part, a tip end-side of the lever shaft penetrating the cover with a flange via a bearing, and a potentiometer provided on a backside of the cover with a flange, rotation of the lever shaft being transmitted to the potentiometer.

An operation unit includes a lever shaft having an operating lever at one end thereof and orthogonal to the operating lever, a plate with a flange having a bearing of the lever shaft, the other end-side of the lever shaft being arranged with penetrating the plate with a flange from a front surface thereof, a rotation restraint part for the lever shaft fixed to the lever shaft behind the plate with a flange and having a self-return function of forward and reverse rotations of the lever shaft, a cover with a flange covered on a backside of the plate with a flange in a form of sandwiching the rotation restraint part, a tip end-side of the lever shaft penetrating the cover with a flange via a bearing, and a potentiometer provided on a backside of the cover with a flange, rotation of the lever shaft being transmitted to the potentiometer.

Disclosed are transportable containers for mounting onto a rearward portion of the frame of a semi-truck comprising. The transportable containers may have a frame comprising: a first wall; a second wall opposing the first wall; two opposed lateral walls extending between the first side and the second side, at least one of the lateral walls comprising an opening formed therein; a top extending over the first wall, the second wall, and the two lateral walls; a second floor contained within an internal space of the frame, the second floor being controllably deployable between a lowered position and a raised position; and a loading ramp hingedly attached to a base of the at least one lateral side having the opening formed therein.

Disclosed are transportable containers for mounting onto a rearward portion of the frame of a semi-truck comprising. The transportable containers may have a frame comprising: a first wall; a second wall opposing the first wall; two opposed lateral walls extending between the first side and the second side, at least one of the lateral walls comprising an opening formed therein; a top extending over the first wall, the second wall, and the two lateral walls; a second floor contained within an internal space of the frame, the second floor being controllably deployable between a lowered position and a raised position; and a loading ramp hingedly attached to a base of the at least one lateral side having the opening formed therein.

A stabilization apparatus for a frame having a cover comprises a lifting head having a horizontal shank with first and second ends, a pair of vertical supports, a vertical support located at each end of the lifting head and a retention leg connected to the shank the retention leg in use configured to exert a downward restraining force on the frame or portion thereof. The apparatus prevents a frame or its edge from being lifted with the cover, and thereby reduce damage to the frame or road and avoiding costly repair. The inventive apparatus is particularly useful to prevent damage to manholes when lifting manhole covers.

A board pusher tool is provided to hold one or more boards in a readied position and orientation relative to one another and an underlying joist. The pusher can include a base, a magnet joined with the base to secure the base in a fixed position relative to an underlying joist constructed from a magnetic material, a bumper reciprocally joined with the base, a guide joined with the bumper to allow the bumper to extend a predetermined distance away from the base, and a biasing element pushing the bumper away from the base, where the bumper forcibly urges the board away from the base, optionally toward or against another board, while the magnet secures the base in the fixed position relative to the underlying joist. A related method of use is provided.

A board pusher tool is provided to hold one or more boards in a readied position and orientation relative to one another and an underlying joist. The pusher can include a base, a magnet joined with the base to secure the base in a fixed position relative to an underlying joist constructed from a magnetic material, a bumper reciprocally joined with the base, a guide joined with the bumper to allow the bumper to extend a predetermined distance away from the base, and a biasing element pushing the bumper away from the base, where the bumper forcibly urges the board away from the base, optionally toward or against another board, while the magnet secures the base in the fixed position relative to the underlying joist. A related method of use is provided.

A method to move a manhole cover relative to a manhole. The method includes providing a tool having a body having a front end with a toe, a back end with a heal pad, and a middle area located between the toe and the heal pad. The middle area includes a fulcrum joined to the middle area and an elongated handle joined to the middle area and extending away from the body to a distal end of the handle. Another step is inserting the toe of the tool into a receiving side-hole of the manhole cover. And, there is positioning the fulcrum of the tool on a surface surrounding the manhole cover. Further, there is pulling on the distal end of the handle while simultaneously stepping on the heal pad to pivotally lift the manhole cover via the fulcrum and unseating the manhole cover from the manhole.

Vessel transfer systems are provide herein. The systems include bogies, including a pivoting bogie and a rack and pinion bogie, as well as associated cradles, carriages, and power and control units. The pivoting bogie includes a first side frame, a second side frame, at least one wheel coupled with each of the first and second side frames, and a lift member coupled with each of the first and second side frames. The lift member is pivotably coupled to the first side frame. The rack and pinion bogie includes a frame and pinion gears coupled with the frame. The pinion gears can be selectively coupled with a gear rack, such as at a shipyard. Also provided herein are methods of use of one or both of the bogies and associated equipment, such as for moving vessels within a shipyard.

Vessel transfer systems are provide herein. The systems include bogies, including a pivoting bogie and a rack and pinion bogie, as well as associated cradles, carriages, and power and control units. The pivoting bogie includes a first side frame, a second side frame, at least one wheel coupled with each of the first and second side frames, and a lift member coupled with each of the first and second side frames. The lift member is pivotably coupled to the first side frame. The rack and pinion bogie includes a frame and pinion gears coupled with the frame. The pinion gears can be selectively coupled with a gear rack, such as at a shipyard. Also provided herein are methods of use of one or both of the bogies and associated equipment, such as for moving vessels within a shipyard.