US5038500A — Boot having gritted outsole

Claim 1

Independent Claim 61 words

A gritted outsole suitable for mounting onto a boot, comprising a vulcanized rubber outsole having inorganic grit particles secured to a face thereof by a polymeric adhesive having both polar and non-polar components, wherein the polar component has an affinity for and bonds to the grit particles, and the non-polar component has an affinity for and bonds to the rubber outsole.

Claim 2

Dependent Claim 61 words

A gritted outsole suitable for mounting onto a boot, comprising a vulcanized rubber outsole having inorganic grit particles secured to a face thereof by a polymeric adhesive having both polar and non-polar components, wherein the polar component has an affinity for and bonds to the grit particles, and the non-polar component has an affinity for and bonds to the rubber outsole.

Claim 3

Dependent Claim 70 words

The gritted outsole of claim 1, wherein said adhesive comprises a pair of first and second primers, said first primer comprising a polar organic polymer coated on the outer surfaces of said particles, and said second primer comprising an organic polymer coated on the outer surfaces of said particles over said first primer, which second primer is intervulcanized with both of said first primer and said rubber of said outsole.

Claim 4

Dependent Claim 42 words

The gritted outsole of claim 1, wherein said grit particles consist essentially of an inorganic oxide, and said particles have a Mohs hardness of at least about 7 and an average particle size in the range of about 0.7 to 2.4 mm.

Claim 5

Dependent Claim 40 words

The gritted outsole of claim 1, wherein said outsole further comprises an outsole base having a layer containing said grit particles laminated on a face thereof, said layer consisting essentially of vulcanized rubber having said particles substantially uniformly distributed therein.

Claim 6

Dependent Claim 33 words

The outsole of claim 4, wherein said rubber in said layer consists essentially of natural rubber, SBR rubber, and an amount of carbon black effective for imparting enhanced abrasion resistance to said layer.

Claim 7

Dependent Claim 20 words

The outsole of claim 2, wherein said polar organic polymer consists essentially of an elastomeric adhesive substituted with polar groups.

Claim 8

Dependent Claim 16 words

The outsole of claim 6, wherein said polar groups are halogen atoms or oxycarbon functional groups.

Claim 9

Dependent Claim 17 words

The outsole of claim 6, wherein said second primer consists essentially of a substantially non-polar elastomeric adhesive.

Claim 10

Dependent Claim 18 words

The outsole of claim 1, wherein said adhesive comprises an organic monomer having polar and reactive non-polar segments.

Claim 11

Dependent Claim 19 words

The outsole of claim 1, wherein said adhesive comprises a coating on the outer surfaces of said grit particles.

Claim 12

Dependent Claim 23 words

The outsole of claim 4, wherein said outsole base has a relief pattern thereon, and said layer is laminated over said relief pattern.

Claim 13

Dependent Claim 18 words

The outsole of claim 11, wherein said relief pattern comprises a series of adjacent rows of polygonal cells.

Claim 14

Dependent Claim 82 words

In a boot including a boot body, an outsole, and means for securing an inner face of the outsole to said boot body, the improvement which comprises: said outsole consists essentially of vulcanized rubber and has inorganic grit particles secured to a face thereof by a polymeric adhesive having both polar and non-polar components, wherein the polar component has an affinity for and bonds to the grit particles and the non-polar component has an affinity for and bonds to the rubber outsole.

Claim 15

Dependent Claim 82 words

In a boot including a boot body, an outsole, and means for securing an inner face of the outsole to said boot body, the improvement which comprises: said outsole consists essentially of vulcanized rubber and has inorganic grit particles secured to a face thereof by a polymeric adhesive having both polar and non-polar components, wherein the polar component has an affinity for and bonds to the grit particles and the non-polar component has an affinity for and bonds to the rubber outsole.

Claim 16

Dependent Claim 69 words

The boot of claim 13, wherein said adhesive comprises a pair of first and second primers, said first primer comprising a polar organic polymer coated on the outer surfaces of said particles, and said second primer comprising an organic polymer coated on the outer surfaces of said particles over said first primer, which second primer is intervulcanized with both of said first primer and said rubber of said outsole.

Claim 17

Dependent Claim 143 words

A gritted outsole, made by a process comprising: coating a paste containing grit particles and unvulcanized rubber on the bottom surface of an uncured rubber outsole; drying said paste to form a gritted rubber layer on said outsole; and intervulcanizing said layer with said outsole to form said gritted outsole; wherein said paste is made by the steps of: dissolving unvulcanized rubber in a non-polar organic solvent to form a rubber solution; adding a vulcanizing agent to said rubber solution; and mixing said rubber solution with particles of inorganic grit in an amount sufficient to form a flowable paste; and wherein said grit is made by the steps of: coating particles of a metal oxide having a Mohs hardness of at least about 7 with a polar elastomeric adhesive; and then coating said coated metal oxide particles with a substantially non-polar elastomeric adhesive.

Claim 18

Dependent Claim 143 words

A gritted outsole, made by a process comprising: coating a paste containing grit particles and unvulcanized rubber on the bottom surface of an uncured rubber outsole; drying said paste to form a gritted rubber layer on said outsole; and intervulcanizing said layer with said outsole to form said gritted outsole; wherein said paste is made by the steps of: dissolving unvulcanized rubber in a non-polar organic solvent to form a rubber solution; adding a vulcanizing agent to said rubber solution; and mixing said rubber solution with particles of inorganic grit in an amount sufficient to form a flowable paste; and wherein said grit is made by the steps of: coating particles of a metal oxide having a Mohs hardness of at least about 7 with a polar elastomeric adhesive; and then coating said coated metal oxide particles with a substantially non-polar elastomeric adhesive.

Claim 19

Dependent Claim 17 words

The gritted outsole of claim 1, wherein said non-polar component is cross-linked with said vulcanized rubber outsole.

Claim 20

Dependent Claim 148 words

In a boot including a boot body and an outsole secured to the underside of the boot body, the improvement which comprises: the outsole is made of vulcanized rubber and has inorganic oxide grit particles secured to a face thereof by a polymeric adhesive having both polar and non-polar components, the grit particles having a Mohs hardness of at least 7 and an average particle size of about 0.7 to 2.4 mm, and the adhesive comprises a pair of first and second primers, the first primer comprising a polar organic polymer coated on the outer surfaces of the particles, and the second primer comprising an organic polymer coated on the surfaces of the particles over the first primer, which second primer is intervulcanized with both of the first primer and the rubber of the outsole, the first primer having an affinity for and bonding to the grit particles.

Claim 21

Dependent Claim 148 words

In a boot including a boot body and an outsole secured to the underside of the boot body, the improvement which comprises: the outsole is made of vulcanized rubber and has inorganic oxide grit particles secured to a face thereof by a polymeric adhesive having both polar and non-polar components, the grit particles having a Mohs hardness of at least 7 and an average particle size of about 0.7 to 2.4 mm, and the adhesive comprises a pair of first and second primers, the first primer comprising a polar organic polymer coated on the outer surfaces of the particles, and the second primer comprising an organic polymer coated on the surfaces of the particles over the first primer, which second primer is intervulcanized with both of the first primer and the rubber of the outsole, the first primer having an affinity for and bonding to the grit particles.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1994-08-12	1995-02-11	1995-08-13	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1998-08-12	1999-02-11	1999-08-13	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2002-08-12	2003-02-11	2003-08-13	$7700.00	Window Closed / Lapsed

Boot having gritted outsole

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