Insulated and waterproof shoe

• US 5,802,740 A
• Filed: 11/19/1996
• Issued: 09/08/1998
• Est. Priority Date: 05/01/1995
• Status: Expired due to Term

• Current Assignee: Lacrosse Footwear Incorporated (Abc-Mart Incorporated)
• Original Assignee: Erik E. Merk Sr
• Inventors: Merk, Erik E. Sr.
• Primary Examiner(s): PATTERSON, MARIE D
• Application Number:
  US08/754,114
• Time in Patent Office: 658 Days
• Field of Search: 36/10, 36/45, 36/55, 36/83, 36/93, 36/4
• US Class Current: 36/55
• CPC Class Codes: A43B 23/07 Linings therefor lining laminated with upper A43B23/026
• CPC Class Codes: A43B 7/125 provided with a vapour permeable member, e.g. a membrane A43B23/022 takes precedence

Abstract

A shoe having an upper, an outsole, a midsole, and an insole. An insulating sock-type liner is fitted within the shoe, having a suspended connection to an upper portion of the shoe and a cemented connection to each of the midsole and insole. The insulating liner is capable of combination with a sock-type waterproofing liner that fits within the insulating liner. The insulating liner has a bottom extension relative to the waterproofing liner for securement to the midsole under the insole. Also, the insulating layer has a front cut-out portion that allows flexing of the shoe as well as a person'"'"'s foot.

Claims

1. In combination with a shoe construction of the type having an upper, an outsole, a midsole on the outsole, and an insole on the midsole,

a first sock-type liner of waterproofing material,

a second sock-type liner of insulating material capable of protecting the feet of a wearer against cold temperatures,

said first liner being enclosed in said second liner, said second liner being only slightly larger in overall dimension than said first liner so as to snugly receive it,

said first and second liners fitting closely within and suspended from an upper portion of the upper of the shoe, and

means for securing the bottom portion of the first liner directly to and in contact with an upper surface of the insole, and upper and lower surfaces of bottom portions of the second liner directly to and in contact with a lower surface of the insole and an upper surface of the midsole, respectively.

2. The combination of claim 1 wherein said waterproofing liner has a bottom surface cemented to an upper surface of the insole and said insulating liner has upper and lower surfaces cemented respectively to a lower surface of the insole and an upper surface of the midsole.

3. The combination of claim 1 wherein said insulating liner has extensions around a lower portion thereof that fit under the insole and are cemented thereto and to the midsole.

4. The combination of claim 1 wherein said insulating liner has extensions around a lower portion thereof that fit under the insole and are cemented thereto and to the midsole, said extensions forming a bottom wall with a central opening, and a shank member supported on said midsole within said central opening.

5. A shoe construction comprising an upper capable of receiving the foot of a person and having an open bottom,

a midsole secured at its upper side to the bottom side of the periphery of said upper,

a ground-engaging sole secured at its upper side to the bottom side of said midsole in face-to-face contact,

an insulating liner in said upper, the liner being capable of protecting the feet of a wearer against cold temperatures, the liner having an open bottom portion,

a shank member supported on the midsole within the open bottom of the liner,

means suspending said liner from an upper portion of said shoe upper,

means securing a bottom portion of said insulating liner directly to and in contact with a top surface of said midsole,

an insole within said liner secured to the upper surface of said liner,

a waterproofing liner in said insulating liner, the insulating liner being only slightly larger in overall dimension than the waterproofing liner so as to snugly receive it,

means suspending said waterproofing liner from an upper portion of said shoe upper,

and means securing the bottom of said waterproofing liner directly to the top surface of said insole.