US4099341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foot warmer
Assignee: Individual
•
Filing: 1976-09-23
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Granted: 1978-07-11
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Expires: 1996-09-23
Abstract
Abstract A foot warmer constructed of a stiff insulating foam material such as polystyrene, is illustrated having a displaceable front end panel providing an opening when displaced for receiving a wearer's shoe, boot, and the like enabling the foot warmer to be readily placed upon the foot and the front end panel replaced to thus provide a foot warmer wherein insulation extends about the leg of the wearer at least as far up as the area of the ankle to provide an effective foot warmer.
Inventors
- 👤 Larry R. Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:45
CPC Classifications
A; A43; A43B; A43B3/00; A43B3/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
198 words
A foot warmer constructed essentially of a stiff water-proof insulating synthetic foam material for receiving a wearer's shoe, boot and the like, comprising: a unitary sole having a toe portion tapering inwardly toward the front and a heel portion tapering inwardly toward the rear; vertically extending marginal sides integral with said sole; an instep and toe cover bridging said sides adjacent a front portion thereof extending across said toe portion; said sides and cover defining an opening at a top portion snugly receiving a leg of the wearer therein; said sides including longitudinal intermediate members tapering inwardly toward the rear; a removable front panel including said instep and toe cover extending transversely of said sole bridging said intermediate members extending entirely thereacross providing an open end tapering inwardly toward the rear, when said panel is removed for admitting said foot by movement thereof between said sides longitudinally of said sole; a rear panel bridging said intermediate members and extending upwardly from said heel portion; means fastening said removable front panel in position bridging said intermediate members; and said fastening means including complimentary end portions on said removable front panel and said intermediate members for engagement is opposed relation.
Claim 2
Dependent Claim
198 words
A foot warmer constructed essentially of a stiff water-proof insulating synthetic foam material for receiving a wearer's shoe, boot and the like, comprising: a unitary sole having a toe portion tapering inwardly toward the front and a heel portion tapering inwardly toward the rear; vertically extending marginal sides integral with said sole; an instep and toe cover bridging said sides adjacent a front portion thereof extending across said toe portion; said sides and cover defining an opening at a top portion snugly receiving a leg of the wearer therein; said sides including longitudinal intermediate members tapering inwardly toward the rear; a removable front panel including said instep and toe cover extending transversely of said sole bridging said intermediate members extending entirely thereacross providing an open end tapering inwardly toward the rear, when said panel is removed for admitting said foot by movement thereof between said sides longitudinally of said sole; a rear panel bridging said intermediate members and extending upwardly from said heel portion; means fastening said removable front panel in position bridging said intermediate members; and said fastening means including complimentary end portions on said removable front panel and said intermediate members for engagement is opposed relation.
Claim 3
Dependent Claim
16 words
The structure set forth in claim 1 wherein said insulating synthetic foam material is molded polystyrene.
Claim 4
Dependent Claim
30 words
The structure set forth in claim 1 including a hinge connecting said cover to said toe portion and wherein said rear panel is a separate member fastened in bridging position.
Claim 5
Dependent Claim
32 words
The structure set forth in claim 1 wherein said removable front panel includes an extension of said sides having a juncture therewith and with said intermediate members at substantially a right angle.
Claim 6
Dependent Claim
41 words
The structure set forth in claim 3 including opposed cavities in said toe and in said removable front panel adjacent the forwardmost portion thereof, and a vertical hinge member secured on opposite ends in respective cavities providing a transverse horizontal pivot.
Claim 7
Dependent Claim
25 words
The structure set forth in claim 5 wherein said complimentary end portions include interfitting members carried by said removable front panel and said intermediate members.
Claim 8
Dependent Claim
195 words
A foot warmer constructed essentially of a stiff water-proof insulating synthetic foam material for receiving a wearer's shoe, boot and the like, comprising: a unitary sole having a toe portion and a heel portion; vertically extending marginal sides integral with said sole; an instep and toe cover bridging said sides adjacent a front portion thereof extending across said toe portion; said sides and cover defining an opening at a top portion snugly receiving a leg of the wearer at least as far up as the ankle therein; said sides including longitudinal intermediate members; a removable front panel including said instep and toe cover extending transversely of said sole bridging said intermediate members extending entirely therecross providing an open end when said panel is removed for admitting said foot by movement thereof between said sides longitudinally of said sole; a rear panel bridging said intermediate members and extending upwardly from said heel portion; means fastening said removable front panel in position bridging said intermediate members; said fastening means including complimentary end portions on said removable front panel and said intermediate members for engagement in opposed relation; and a hinge connecting said cover to said toe portion.
Claim 9
Dependent Claim
195 words
A foot warmer constructed essentially of a stiff water-proof insulating synthetic foam material for receiving a wearer's shoe, boot and the like, comprising: a unitary sole having a toe portion and a heel portion; vertically extending marginal sides integral with said sole; an instep and toe cover bridging said sides adjacent a front portion thereof extending across said toe portion; said sides and cover defining an opening at a top portion snugly receiving a leg of the wearer at least as far up as the ankle therein; said sides including longitudinal intermediate members; a removable front panel including said instep and toe cover extending transversely of said sole bridging said intermediate members extending entirely therecross providing an open end when said panel is removed for admitting said foot by movement thereof between said sides longitudinally of said sole; a rear panel bridging said intermediate members and extending upwardly from said heel portion; means fastening said removable front panel in position bridging said intermediate members; said fastening means including complimentary end portions on said removable front panel and said intermediate members for engagement in opposed relation; and a hinge connecting said cover to said toe portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |