Screw on lid

Claim 2

A lid for threading engagement with a container having a rim forming a mouth and made of a soft cushioned material, said lid comprising: a central section of such size as to extend substantially across the mouth of the container; means defining a downwardly opening circumferentially extending cavity on said lid and attached to said central section and having inner and outer walls; and at least one thread formed on the inner wall of said cavity and inclined to the horizontal axis of the lid whereby as the lid is rotated onto the container said thread cuts into the inner side of said rim to form a detent to hold the lid onto said container.

Claim 3

A lid for threading engagement with a container having a rim forming a mouth and made of a soft cushioned material as set forth in claim 1, said downwardly extending circumferential cavity means comprising: a continuous skirt forming the outer wall of said cavity; a series of triangular segments forming the inner wall of said cavity; a circumferential connecting wall connecting said skirt to one side of each of said series of triangular segments; and at least one thread formed on each of said series of triangular segments whereby said thread engages said soft cushioned material to hold said lid on said container.

Claim 4

A lid for threading engagement with a container having a rim forming a mouth and made of a soft cushioned material as set forth in claim 1 in which said central section comprises: a central panel; indents formed adjacent said central panel and each comprising: an indent outer wall formed by a segment of the inner wall of said cavity; an indent inner wall attached to an outer edge of said central panel; and a plurality of wings extending from said central panel to connect with the top of said circumferentially extending cavity and having a margin of each said indent attached to a second side of said wing.

Claim 5

A lid for threading engagement with a container having a rim forming a mouth and made of a soft cushioned material as set forth in claim 3 wherein said indent outer wall is generally triangular, and wherein each said indents further include a generally triangular panel having: a first side connected to the lower edge of said indent outer wall; a second side connected to the lower edge of said indent inner wall; and a third side connected to the side of said wing which is opposite to the side wall connected to said indent inner wall.

Claim 6

A lid for threading engagement with a container having a rim forming a mouth and made of a soft cushioned material as set forth in claim 3 In which said central panel is rectangularly shaped.

Claim 7

A lid for threading engagement with a container having a rim forming a mouth and made of a soft cushioned material as set forth in claim 2 in which said circumferential connecting wall comprises: a flat ring.

Claim 8

A lid for threading engagement with a container having a rim forming a mouth and made of a soft cushioned material as set forth in claim 6 comprising further: radial knurling extending around said flat ring to provide lateral stiffening to said annular ring.

Claim 9

A closure cap for threadingly holding a lid onto a container having a rim forming a mouth and made of a soft cushioned material, said lid comprising: a central section extending substantially across the mouth; means defining a downwardly opening circumferentially extending cavity on said lid and attached to said central section; an outer wall forming the outer part of said cavity; wall sections connected to said central section and forming the inner wall of said cavity; a connecting wall between the upper part of said outer wall and said inner wall sections; and an external screw thread formed on the inner wall of each said inner wall section whereby said lid is threaded into said rim of said containers.

Claim 10

A closure cap for threadingly holding a lid onto a container having a rim forming a mouth and made of a soft cushioned material, said lid comprising: a central section extending substantially across the mouth; means defining a downwardly opening circumferentially extending cavity on said lid and attached to said central section; an outer wall forming the outer part of said cavity; wall sections connected to said central section and forming the inner wall of said cavity; a connecting wall between the upper part of said outer wall and said inner wall sections; and an external screw thread formed on the inner wall of each said inner wall section whereby said lid is threaded into said rim of said containers.

Claim 11

A closure cap for threadingly holding a lid onto a container having a rim forming a mouth and made of a soft cushioned material as set forth in claim 8 in which said central section comprises: a central panel of a generally rectangular shape; wing panels having one edge attached to said central panel and the opposing edge attached to said connecting wall; curved triangular panels forming said wall sections and having a top side connecting to said connecting wall; indents formed adjacent said central panel; a generally triangular panel forming the bottom of each said indent and having: a curved side connected to the bottom of said curved triangular panel; a side connected to an edge of said wing panel; and an indent inner wall connected to an upper edge of a wing panel and a lower edge connected to a straight side of said generally triangular panel.

Claim 12

A lid for a container having a rim forming a mouth, said lid comprising: a central section of such size as to extend substantially across the mouth of the container: means defining a downwardly opening circumferentially extending cavity on said lid attached to said central section; and at least one screw thread formed on the inner part of said cavity such as to press into the rim of the container to form a detent to hold the lid onto said container.

Claim 13

A lid for a container having a rim forming a mouth, said lid comprising: a central section of such size as to extend substantially across the mouth of the container: means defining a downwardly opening circumferentially extending cavity on said lid attached to said central section; and at least one screw thread formed on the inner part of said cavity such as to press into the rim of the container to form a detent to hold the lid onto said container.