Abstract 1. A method of forming a tablet, including a first portion of toroidal shape and a second portion disposed centrally of said first portion with a tablet making machine, wherein said first portion is made of one powder material and said second portion is made of a second powder material, comprising the steps of: (a) providing opposed upper and lower punches defining a die cavity; (b) introducing said one powder material into said die cavity; (c) compressing said first portion from said one material with said upper and lower punches into a toroidal shape having a central hole sufficient to hold its shape; (d) providing a pre-compressed sphere of said second material which loosely fits into the central hole of said first portion; (e) placing said pre-compressed sphere into the central hole of said first portion; and (f) compressing said first and second portions within said die cavity into final shape and into interlocking relationship with one another with said punches to provide a unitary tablet structure.
A method of forming a tablet, including a first portion of toroidal shape and a second portion disposed centrally of said first portion with a tablet making machine, wherein said first portion is made of one powder material and said second portion is made of a second powder material, comprising the steps of: (a) providing opposed upper and lower punches defining a die cavity; (b) introducing said one powder material into said die cavity; (c) compressing said first portion from said one material with said upper and lower punches into a toroidal shape having a central hole sufficient to hold its shape; (d) providing a pre-compressed sphere of said second material which loosely fits into the central hole of said first portion; (e) placing said pre-compressed sphere into the central hole of said first portion; and (f) compressing said first and second portions within said die cavity into final shape and into interlocking relationship with one another with said punches to provide a unitary tablet structure.
Claim 2
Independent Claim
166 words
A method of forming a tablet, including a first portion of toroidal shape and a second portion disposed centrally of said first portion with a tablet making machine, wherein said first portion is made of one powder material and said second portion is made of a second powder material, comprising the steps of: (a) providing opposed upper and lower punches defining a die cavity; (b) introducing said one powder material into said die cavity; (c) compressing said first portion from said one material with said upper and lower punches into a toroidal shape having a central hole sufficient to hold its shape; (d) providing a pre-compressed sphere of said second material which loosely fits into the central hole of said first portion; (e) placing said pre-compressed sphere into the central hole of said first portion; and (f) compressing said first and second portions within said die cavity into final shape and into interlocking relationship with one another with said punches to provide a unitary tablet structure.