Method of attaching metal and plastic parts of an implement handle
View Patent ↗A method of connecting a hollow handle having deformable sections to a tool supporting end piece having one ore more indentations. The deformable sections of the handle are deformed into the indentations of the tool supporting end piece. The handle and the end piece include visual indicia that allow for the deformable portion of the handle and the indentation of the tool supporting end piece to be aligned. The end piece includes a shoulder at the juncture of the first section with a second section limiting the extent of insertion of the end piece into the handle and the indentations are formed, preferably on diametrically opposite sides of the first section, at a known axial distance from the shoulder. Visible indicia are placed on the outer surface of the second section in axial alignment with the indentations.
1. The method of effecting substantially permanent mutual connection of an elongated, hollow handle having proximal and distal ends and a cylindrical wall of uniform inner and outer diameter, at least adjacent said distal end, and an end piece for supporting a tool to be manually manipulated by said handle, said method comprising:
a) forming said end piece with a central axis, a first axial section with a substantially cylindrical outer surface having a diameter no greater than said cylindrical wall inner diameter and at least one indentation therein, a second section extending axially from an integral junction with said first section, said indentation being positioned at a known axial distance from said junction;
b) placing visible indicia on said second section that is visually distinct from the remainder of said end piece and positioned in known, physical relationship to said indentation;
c) inserting said first section of said end piece into said distal end of said handle up to said junction; and
d) deforming said wall inwardly at a position radially adjacent said indentation, said position being located at said known axial distance from said junction and in alignment with said visible indicia, with the deformation extending into said indentation, thereby maintaining said handle and end piece in mutual connection.
2. The method of claim 1 wherein said end piece is formed with an annular should having an outer diameter larger than said inner diameter at said junction, thereby providing stop means limiting the extent of insertion of said end piece into said distal end of said handle.
3. The method of claim 2 and further comprising forming on said end piece means for mounting thereon of a tool to be manually manipulated by said handle.
4. The method of claim 3 wherein said means for mounting comprise threads molded integrally with said end piece.
5. The method of claim 1 and further comprising inserting sealing means to form a substantially liquid-tight seal between said first section and said wall.
6. The method of claim 5 wherein said sealing means is a resilient O-ring.
7. The method of claim 6 wherein said end piece is formed with a through axial bore.
8. The method of claim 1 wherein visible indicia are placed on said second section in axial alignment with said indentation.