Drywall joint finishing tool
OwnerDonald Mark MacMillaninventor
Life of this patent
Estimating the term…
Abstract
A tool for applying a cementitious mixture to a flat surface includes a head assembly for delivering the mixture to the flat surface. A housing is provided for containing a supply of the mixture and a control assembly is interposed between the housing and the head assembly for controlling the flow of the mixture from the housing to and through the head assembly. The control assembly is responsive to the housing being pressed against the flat surface to control the angle of the head assembly relative to the control assembly and to control the flow of the mixture through the head assembly.
Claims18
A tool for applying a cementitious mixture to a flat surface comprising:
- a head assembly for delivering the mixture to the flat surface;
- a housing for containing a supply of the mixture;
- and
- a control assembly between the housing and the head assembly for controlling the flow of the mixture from the housing to and through the head assembly, the control assembly being responsive to the housing being pressed against the flat surface to control the angle of the head assembly relative to the control assembly and to control the flow of the mixture through the head assembly, wherein the control assembly includes a first external part and a second internal part movably mounted within the first external part and wherein when the head assembly is pressed against the flat surface the second internal part is forced farther into the first external part and by such motion the head assembly is unlocked for pivotal motion relative to the control assembly and the flow of the mixture through the head assembly is permitted.
A tool for applying a cementitious mixture to a flat surface comprising:
- a head assembly for delivering the mixture to the flat surface;
- a housing for containing a supply of the mixture;
- and a control assembly between the housing and the head assembly for controlling the flow of the mixture from the housing to and through the head assembly, the control assembly being responsive to the housing being pressed against the flat surface to control the flow of the mixture through the head assembly:
- wherein the control assembly includes an outer cylinder and an inner cylinder movably mounted within the outer cylinder and wherein when the head assembly is pressed against the flat surface the inner cylinder is forced farther into the outer cylinder and by such motion the head assembly is unlocked for pivotal motion relative to the control assembly and the flow of the mixture through the head assembly is permitted.
A tool for applying a cementitious mixture to a flat surface comprising:
- a head assembly for delivering the mixture to the flat surface;
- a housing for containing a supply of the mixture;
- and a control assembly between the housing and the head assembly for controlling the flow of the mixture from the housing to and through the head assembly, the control assembly being responsive to the housing being pressed against the flat surface to control the angle of the head assembly relative to the control assembly;
- wherein the control assembly includes an outer cylinder and an inner cylinder movably mounted within the outer cylinder and wherein when the head assembly is pressed against the flat surface the inner cylinder is forced farther into the outer cylinder and by such motion the head assembly is unlocked for pivotal motion relative to the control assembly.
Dependencies are inferred from the claim text.