Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
141 words
The method of making a punch stripper assembly which comprises forming a molding cavity around the elongated transversely reduced active end of a punch and a rigid punch guide having an end edge with the active end of the punch extending at least to the end edge, pouring a hard setting flowable plastics material into said cavity to a height at least flush with the end edge of the guide but less than the length of said active end of the punch, curing said plastics material into a non-deformable solid stripper body in said cavity fixed to said punch guide whereby the body forms a lateral guide for the punch of the assembly during punching operation of the assembly, and retracting the punch in the guide to release said punch from said body while retaining said body fixed to said guide.
Claim 2
Independent Claim
141 words
The method of making a punch stripper assembly which comprises forming a molding cavity around the elongated transversely reduced active end of a punch and a rigid punch guide having an end edge with the active end of the punch extending at least to the end edge, pouring a hard setting flowable plastics material into said cavity to a height at least flush with the end edge of the guide but less than the length of said active end of the punch, curing said plastics material into a non-deformable solid stripper body in said cavity fixed to said punch guide whereby the body forms a lateral guide for the punch of the assembly during punching operation of the assembly, and retracting the punch in the guide to release said punch from said body while retaining said body fixed to said guide.
Claim 3
Independent Claim
190 words
The method of forming a punch stripper assembly which comprises providing a tubular punch guide with an internal recess spaced above a bottom end of the guide, inserting a punch in snug sliding relation in said guide having a reduced active end portion for projecting through the bottom of the guide joined to the periphery of the punch by an outwardly flared shoulder, positioning the punch in the guide to place said shoulder inwardly from said recessed portion with the reduced active end of the punch extending at least to the bottom end of the guide, casting a hard setting flowable plastics material into said guide around said shoulder and active end of the punch and into said recess in the guide at least to the level of the bottom end, curing said plastics material in the punch into a solid rigid stripper body locked to said guide by the portion of the body filling said recess, whereby the body forms a lateral guide for the punch of the assembly during punching operation of the assembly and retracting the active end of the punch and the shoulder from said body.
Claim 4
Independent Claim
190 words
The method of forming a punch stripper assembly which comprises providing a tubular punch guide with an internal recess spaced above a bottom end of the guide, inserting a punch in snug sliding relation in said guide having a reduced active end portion for projecting through the bottom of the guide joined to the periphery of the punch by an outwardly flared shoulder, positioning the punch in the guide to place said shoulder inwardly from said recessed portion with the reduced active end of the punch extending at least to the bottom end of the guide, casting a hard setting flowable plastics material into said guide around said shoulder and active end of the punch and into said recess in the guide at least to the level of the bottom end, curing said plastics material in the punch into a solid rigid stripper body locked to said guide by the portion of the body filling said recess, whereby the body forms a lateral guide for the punch of the assembly during punching operation of the assembly and retracting the active end of the punch and the shoulder from said body.
Claim 5
Dependent Claim
30 words
The method of claim 1 including the step of coating the reduced active end of the punch with a mold release agent before filling the cavity with said plastics material.
Claim 6
Dependent Claim
20 words
The method of claim 1 wherein the plastics material is an elastomer providing a deformation resisting bearing for the punch.
Claim 7
Dependent Claim
40 words
The method of claim 2 including the step of forming said internal recess as an annular groove in said guide and forming an annular rib filling said groove on said body to lock the body against shifting in the guide.