US4194308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boot blank
Assignee: L LT PRODUKTER
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Filing: 1978-05-18
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Granted: 1980-03-25
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Expires: 1998-05-18
Abstract
Abstract There is provided a boot blank for a wading boot or the like, and as well a boot assembled from the boot blank with a leg encircling member for the assembled boot for hip-high wading boots. The boot blank has a novel structure with upper and lower portions, the lower portion having a planar bottom wall interrupted by a recess located generally centrally of the boot blank and along a central fold line with inwardly tapering side portions of the lower part meeting tapering side walls of the upper part. A triangular flap of the upper portion is adapted to be folded about the boot blank to join an opposite wall. The walls may be secured together by stitching or adhesive. The products are preferably made of an elastic cellular rubber-like material, such as "NEOPRENE", preferably provided with textile material laminated on both faces of the rubber material. The shape of the boot blank allows economical and easy manufacture of the boots and in addition, the products are self-supporting when worn by a user.
Inventors
- 👤 Ulf R. Karlsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:54
CPC Classifications
A; A43; A43B; A43B3/00; A43B3/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
219 words
A boot blank for a wading boot or the like, comprising a body of flexible sheet material having an upper portion adapted to form an ankle-encircling member and a lower portion adapted to form a foot-encircling member, said upper and lower portions being adapted to be joined together to form a unitary body, said lower portion comprising a pair of side members each having a planar central portion meeting together along a central fold line for said boot blank, a substantially linear bottom margin, each bottom margin having a rounded shoulder proximate to said central fold line and together, said rounded shoulder of each portion forming an inwardly extending lower recess at said central fold line, said side members each having a rounded lateral side portion with an inwardly extending tapering side meeting said upper portion, said upper portion having a generally linear top margin with a pair of side portions, one of said side portions having an outwardly tapering side portion meeting one of said inwardly tapering side shoulders of said lower portion in an obtuse relationship, said upper portion having a triangularly shaped tab on the side opposed to said last-mentioned side, said triangularly shaped tab having an inwardly tapering side wall meeting said inwardly tapering side portion of said lower member in an acute angular relationship.
Claim 2
Dependent Claim
219 words
A boot blank for a wading boot or the like, comprising a body of flexible sheet material having an upper portion adapted to form an ankle-encircling member and a lower portion adapted to form a foot-encircling member, said upper and lower portions being adapted to be joined together to form a unitary body, said lower portion comprising a pair of side members each having a planar central portion meeting together along a central fold line for said boot blank, a substantially linear bottom margin, each bottom margin having a rounded shoulder proximate to said central fold line and together, said rounded shoulder of each portion forming an inwardly extending lower recess at said central fold line, said side members each having a rounded lateral side portion with an inwardly extending tapering side meeting said upper portion, said upper portion having a generally linear top margin with a pair of side portions, one of said side portions having an outwardly tapering side portion meeting one of said inwardly tapering side shoulders of said lower portion in an obtuse relationship, said upper portion having a triangularly shaped tab on the side opposed to said last-mentioned side, said triangularly shaped tab having an inwardly tapering side wall meeting said inwardly tapering side portion of said lower member in an acute angular relationship.
Claim 3
Dependent Claim
27 words
A boot blank as defined in claim 1, wherein said side portions of said upper and ankle-encircling members are in a generally parallel relationship to each other.
Claim 4
Dependent Claim
23 words
A boot blank as defined in claim 1, wherein said rounded lateral side portions of said lower member are provided with recesses therein.
Claim 5
Dependent Claim
58 words
A boot blank as defined in claim 2, wherein said upper member has a substantially planar top wall in a generally parallel relationship to said substantially linear bottom margin of said lower portion, and said inwardly extending sides of said bottom portion being in substantially the same angular relationship relative to the top wall of said upper portion.
Claim 6
Dependent Claim
18 words
A boot blank as defined in claim 4, wherein said flexible sheet material comprises a cellular synthetic material.
Claim 7
Dependent Claim
31 words
A boot blank as defined in claim 5, wherein said cellular material comprises an elastic cellular rubber material having a facing on at least one side thereof of a textile material.
Claim 8
Dependent Claim
10 words
A boot made from the boot blank of claim 2.
Claim 9
Dependent Claim
10 words
A boot made from the boot blank of claim 3.
Claim 10
Dependent Claim
65 words
A boot assembly comprising a boot made from the boot blank of claim 2 together with a one-piece leg member, said leg member comprising a length of flexible sheet material having a bottom margin substantially equal in length to the circumference of the upper portion of the boot, said leg assembly being fixedly secured to said boot to form a one-piece leg and boot assembly.
Claim 11
Independent Claim
332 words
A method of manufacturing a wading boot comprising the steps of providing a boot blank and a leg blank adapted to be secured to said boot blank, said boot blank comprising a body of flexible sheet material having an upper portion adapted to form an ankle-encircling member and a lower portion adapted to form a foot-encircling member, said lower portion comprising a pair of side members each having a planar central portion meeting together along a central fold line for said boot blank, a substantially linear bottom margin, each bottom margin having a rounded shoulder proximate to said central fold line and together, said rounded shoulder of each portion forming an inwardly extending lower recess at said central fold line, said side members each having a rounded lateral side portion with an inwardly extending tapering side meeting said upper portion, said upper portion having a generally linear top margin with a pair of side portions, one of said side portions having an outwardly tapering side portion meeting one of said inwardly tapering side shoulders of said lower portion in an obtuse relationship, said upper portion having a triangularly shaped tab on the side opposed to said last-mentioned side, said triangularly shaped tab having an inwardly tapering side wall meeting said inwardly tapering side portion of said lower member in an acute angular relationship, said leg blank comprising a trapezoidal shaped flexible body of sheet material having a narrower calf portion and a wider upper portion, fixedly securing the inwardly tapering wall of said triangularly shaped tab to the opposed wall of said upper portion of said boot blank, fixedly securing said bottom walls of said bottom portion to each other, and fixedly securing said inwardly tapering upper walls of said bottom portion to each other to form an assembled boot blank, securing the opposed lateral side walls of said trapezoidally shaped leg portion together, and securing the bottom portion of the resulting assembled leg portion to the upper portion of said boot.
Claim 12
Independent Claim
332 words
A method of manufacturing a wading boot comprising the steps of providing a boot blank and a leg blank adapted to be secured to said boot blank, said boot blank comprising a body of flexible sheet material having an upper portion adapted to form an ankle-encircling member and a lower portion adapted to form a foot-encircling member, said lower portion comprising a pair of side members each having a planar central portion meeting together along a central fold line for said boot blank, a substantially linear bottom margin, each bottom margin having a rounded shoulder proximate to said central fold line and together, said rounded shoulder of each portion forming an inwardly extending lower recess at said central fold line, said side members each having a rounded lateral side portion with an inwardly extending tapering side meeting said upper portion, said upper portion having a generally linear top margin with a pair of side portions, one of said side portions having an outwardly tapering side portion meeting one of said inwardly tapering side shoulders of said lower portion in an obtuse relationship, said upper portion having a triangularly shaped tab on the side opposed to said last-mentioned side, said triangularly shaped tab having an inwardly tapering side wall meeting said inwardly tapering side portion of said lower member in an acute angular relationship, said leg blank comprising a trapezoidal shaped flexible body of sheet material having a narrower calf portion and a wider upper portion, fixedly securing the inwardly tapering wall of said triangularly shaped tab to the opposed wall of said upper portion of said boot blank, fixedly securing said bottom walls of said bottom portion to each other, and fixedly securing said inwardly tapering upper walls of said bottom portion to each other to form an assembled boot blank, securing the opposed lateral side walls of said trapezoidally shaped leg portion together, and securing the bottom portion of the resulting assembled leg portion to the upper portion of said boot.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-25 | 1983-09-24 | 1984-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-25 | 1987-09-24 | 1988-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-25 | 1991-09-24 | 1992-03-25 | $7700.00 | Window Closed / Lapsed |