A drywall finisher's flat box is disclosed, having an adjustable pressure plate spring, independent suspension for guide wheels on the back plate, and a wiper configured so that the pressure plate can be pushed flat against the back plate, thus expelling nearly all of the drywall compound from the flat box.
Drywall Mud Pump With Improved Connection Between The Piston And The Rod
Drywall mud pump for pumping drywall joint compound, for instance, from a bucket into a drywall tool. The pump includes a cylinder, a piston, a rod, and a means, or a connection structure between the piston and the rod, for allowing the end of the rod to move laterally relative to the piston. Some embodiments have an elongated hole in the piston that receives a flattened or reduced diameter end of the rod, for example. Different embodiments include a pump head through which the rod passes, a handle, a linkage, a means for allowing the rod to pivot, a shortened guide, a means for preventing the piston from rotating about the rod, or a combination thereof. Pistons may include, for example, passageways with straight and curved sides, a flapper, an elongated washer to block the elongated hole, and a means for controlling the rotational position of the washer.
An improved capacity mud pump is achieved by lengthening the link between the piston and the pump handle in such a way that each stroke of the handle moves the piston farther, thus transferring more mud per stroke. Reconfiguration of the output aperture of the pump by attaching a high filler allows the user to hold the empty tool in a position that affords better leverage in working the pump handle and shaft guides improve the application of vertical force to the piston.
Apparatus For Dispensing Viscous Fluid, And Tool And Method For Dispensing Drywall Joint Compound
Werner L. Schlecht - Paradise Valley AZ, US David T. Roman - Chandler AZ, US
International Classification:
B28B 3/00 A46B 17/02 A21C 11/00
US Classification:
401 48, 425 87, 425458
Abstract:
Apparatuses for dispensing viscous fluids, tools for dispensing drywall joint compound, and methods. Embodiments include a chamber containing the fluid or compound, a discharge head, and a valve that is normally closed and opens in response to a force applied by pressing the tool against the drywall. Embodiments include a stopper linked to the nozzle, and when the nozzle is moved, the stopper moves from blocking an orifice, to not blocking the orifice. Chambers include a pressure plate, two side plates, a back plate, and a radius plate, and at least one spring or spring hinge that applies a force on the pressure plate. A torsion spring may be substantially concentric with the pivot point. Certain methods obtain or provide a source of pressurized drywall joint compound, an attachment feature, a valve, an enclosed passageway, and a linkage from the attachment feature to the valve.
Werner L. SCHLECHT - Paradise Valley AZ, US David T. Roman - Chandler AZ, US
International Classification:
B28B 3/00 A46B 17/02 A21C 11/00
US Classification:
425 87, 425458, 401 48
Abstract:
Apparatuses for dispensing viscous fluids, tools for dispensing drywall joint compound, and methods. Embodiments include a chamber containing the fluid or compound, a discharge head, and a valve that is normally closed and opens in response to a force applied by pressing the tool against the drywall. Embodiments include a stopper linked to the nozzle, and when the nozzle is moved, the stopper moves from blocking an orifice, to not blocking the orifice. Chambers include a pressure plate, two side plates, a back plate, and a radius plate, and at least one spring or spring hinge that applies a force on the pressure plate. A torsion spring may be substantially concentric with the pivot point. Certain methods obtain or provide a source of pressurized drywall joint compound, an attachment feature, a valve, an enclosed passageway, and a linkage from the attachment feature to the valve.
Stilts With Non-Circular Support Pole And Method Of Improving Safety
Werner L. Schlecht - Paradise Valley AZ, US David T. Roman - Chandler AZ, US
Assignee:
CINTA TOOLS, LLC - Scottsdale AZ
International Classification:
A63B 25/00
US Classification:
482 75
Abstract:
Stilts for supporting a worker for doing elevated work, such as drywall installation, and methods of improving the safety of stilts, reducing the weight of stilts, and obtaining and providing stilts. Stilts each include a base member, a shoe plate, at least one (e.g., two) column(s), a leg-attachment mechanism, a support pole having a non-circular feature, and a guide that engages the non-circular feature to better resist twisting. In some embodiments, the non-circular feature is that the support pole has a non-circular cross section, such as an oval cross section. Inner and outer portions may telescopically engage to provide for height adjustment.
Flat Box, Tool, And Method Of Dispensing Drywall Joint Compound
Werner L. Schlecht - Paradise Valley AZ, US David T. Roman - Chandler AZ, US
Assignee:
CINTA TOOLS, LLC - Scottsdale AZ
International Classification:
B05C 17/005 B05D 1/26
US Classification:
4274273, 401137
Abstract:
Disclosed are flat boxes, tools, and methods for dispensing drywall joint compound, for example, into joints between sheets of drywall on a building interior surface or for finishing drywall. Various embodiments include a stopper or opening cover to block the opening to dispense the drywall joint compound, at least one guide that holds the opening cover substantially parallel to the back plate, holds the opening cover against the back plate, and allows the opening cover to slide along the back plate when moved by an operator of the flat box to block or unblock the opening to dispense the drywall joint compound, and a cover control mechanism that controls movement of the stopper or opening cover in relation to the back plate.