Flat box finisher

摘要

The invention generally relates to a flat box finisher for applying mud (or mastic or joint compound) over taped joints on walls and ceilings. Usually, paint or wallpaper is then applied over the finished mud. The flat box finisher has no external springs, but has at least one internal support bar which acts as a spring for applying pressure to a corresponding dry wall finishing handle affixed to the flat box finisher. The internal support bar is surrounded by the mud while the device is in use. As a result of having no external spring, the flat box finisher may be reduced in size for smaller jobs or difficult to reach areas of a room. The internal support bar may also eliminate problems with external springs, such as the spring wearing out or becoming damaged during use or storage.

主权项

1. A mud applying flat box finisher device comprising:
a housing having a top, a bottom, a front, a back, a first side, a second side and an interior; a movable top plate substantially forming the top of the housing wherein the movable top plate moves from a first position to a second position and wherein the movable top plate has a top side and an underside; a support bar having a first layer having a curved portion and having a second layer wherein the first layer and second layer are both located completely within the interior of the housing and wherein the first layer of the support bar is secured to the second layer of the support bar and wherein the first layer is longer than the second layer and wherein the support bar extends from the bottom of the housing to the underside of the movable top plate and wherein the support bar exerts pressure on the underside of the movable top plate and wherein the support bar bends upon pressure being exerted on the top side of the movable top plate and moves to a second position and wherein the support bar returns the movable top plate to a first position when the pressure is removed; and wherein the first layer of the support bar is permanently secured to the bottom of the housing and wherein the first layer of the support bar is not secured to the underside of the movable top plate and wherein the curved portion of the first layer of the support bar applies pressure to the underside of the movable top plate.