Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
125 words
In apparatus for progressively melting and dispensing thermoplastic material, an elongated body, the body having a generally frusto-conical hot melt chamber extending substantially from an inlet for the material in its solid form and toward a relatively smaller outlet for the material when liquefied, said chamber being defined by an essentially smooth wall, the body being constructed for heat transfer relation to a heater, at least one manifold by-pass extending generally parallel to the chamber wall, at least one axially drilled auxiliary channel in the body interconnecting the smaller end of the melt chamber to the body outlet, and a plurality of radially drilled holes spaced along the chamber substantially in a line to bleed off and conduct the material as melted into the by-pass.
Claim 2
Dependent Claim
125 words
In apparatus for progressively melting and dispensing thermoplastic material, an elongated body, the body having a generally frusto-conical hot melt chamber extending substantially from an inlet for the material in its solid form and toward a relatively smaller outlet for the material when liquefied, said chamber being defined by an essentially smooth wall, the body being constructed for heat transfer relation to a heater, at least one manifold by-pass extending generally parallel to the chamber wall, at least one axially drilled auxiliary channel in the body interconnecting the smaller end of the melt chamber to the body outlet, and a plurality of radially drilled holes spaced along the chamber substantially in a line to bleed off and conduct the material as melted into the by-pass.
Claim 3
Dependent Claim
43 words
A hot melt body as in claim 1 wherein some circumferentially opposite wall surfaces of the melt chamber have radii of curvature different than those of intermediate wall surfaces, and the lengths of said holes diminish progressively as the body outlet is approached.
Claim 4
Dependent Claim
61 words
A hot melt body as set forth in claim 1 wherein the walls of the holes and of the by-pass are wholly circular in section and of constant diameter, and the walls of the chamber, except as interrupted by the radial holes, have smooth surfaces partly circular in cross section and partly flatted on opposite sides nearer the larger end portion.
Claim 5
Dependent Claim
71 words
A melt body as in claim 1 wherein a pair of said manifold by-passes is provided of uniform diameter on opposite sides of the body from its melt chamber, only one of the by-passes has its bleeder holes extending, respectively, in alignment through both the opposite walls of the melt chamber and the opposite walls of the one by-pass, and means for sealing the radially outer holes in said one by-pass.
Claim 6
Dependent Claim
50 words
A melt body as in claim 4 wherein, for sealing the ends of said holes adjacent to the exterior of the body, a plurality of elements are press fit into the respective holes, and metal of the body surrounding the respective holes is swaged into overlapping relation to the elements.
Claim 7
Dependent Claim
51 words
A melt body as in claim 5 wherein the larger end of the melt chamber is defined by a wall surface extending at an angle of about 5 - 18 degrees less to the axis of the chamber than does the wall surface of the chamber at its smaller end portion.
Claim 8
Independent Claim
167 words
The method of making a hot melt body for reducing thermoplastic material progressively comprising the steps of providing an elongated metal casting having a main melt chamber formed by a conic core, the larger end of the chamber opening to an inlet passageway and the smaller end of the chamber being axially spaced from an outlet passageway in the casting, boring a by-pass parallel to but spaced from the wall of the chamber and extending from the outlet passageway, forming an auxiliary channel between the outlet passageway and the smaller end of the melt chamber, forming a plurality of axially spaced, radial bleeder holes which extend through the outside wall of the casting to interconnect the melt chamber to the by-pass, press-fitting a metal seal element into an end of each hole where it emerges from the outside wall of the casting, and then swaging portions of the outside wall of the casting into overlapping relation to the elements to effectively retain them and seal said holes.
Claim 9
Independent Claim
167 words
The method of making a hot melt body for reducing thermoplastic material progressively comprising the steps of providing an elongated metal casting having a main melt chamber formed by a conic core, the larger end of the chamber opening to an inlet passageway and the smaller end of the chamber being axially spaced from an outlet passageway in the casting, boring a by-pass parallel to but spaced from the wall of the chamber and extending from the outlet passageway, forming an auxiliary channel between the outlet passageway and the smaller end of the melt chamber, forming a plurality of axially spaced, radial bleeder holes which extend through the outside wall of the casting to interconnect the melt chamber to the by-pass, press-fitting a metal seal element into an end of each hole where it emerges from the outside wall of the casting, and then swaging portions of the outside wall of the casting into overlapping relation to the elements to effectively retain them and seal said holes.
Claim 10
Dependent Claim
15 words
The method of claim 7 wherein the bleeder holes are formed in a straight row.
Claim 11
Dependent Claim
32 words
The method of claim 8 wherein the seal elements are in the form of balls, and the melt body is formed with external deformable protrusions swagable into overlapping relation with the balls.