Patent US3744073A successfully refreshed from Google Patents.
US3744073A
Expired / Lapsed
US
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Heat setting apparatus
Assignee: Wolverine World Wide Inc
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Filing: 1972-01-13
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Granted: 1973-07-10
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Expires: 1992-01-13
Abstract
Abstract Apparatus for heat setting shoe uppers to conform to a shoe last in a heating chamber by means of direct and indirect radiant energy. Reflective triangular shaped guide ways extend along the length of a conveyor upon which lasts and uppers are transported to provide for both direct and indirect radiation of the energy to the shoes carried on the conveyor. The energy source is positioned above the conveyor to direct the rays downwardly toward the top of the shoe, providing the direct radiation while at the same time the reflected or indirect radiation from the reflective guide ways acts upon the sides of the shoe.
Inventors
- 👤 G Nelson
- 👤 J Boomers
- 👤 R Egtvedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:17
CPC Classifications
A; A43; A43D; A43D95/00; A43D95/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
126 words
In an infrared heating apparatus having article conveying means and radiant energy generating means positioned above said conveying means adapted to direct radiant energy toward said conveying means and articles carried thereon, the improvement comprising: a plurality of guide means positioned adjacent said conveying means and extending along the length thereof, said guide means being spaced apart across the width of said conveyor to thereby form a plurality of article-receiving aisles on said conveyor, said guide means including a plurality of wall members extending upwardly from said conveyor at an angle with respect thereto, each said wall member having reflective surfaces thereon for receiving said radiant energy such that said downwardly directed radiation is indirectly reflected toward the sides of said articles carried on said conveyor.
Claim 2
Dependent Claim
126 words
In an infrared heating apparatus having article conveying means and radiant energy generating means positioned above said conveying means adapted to direct radiant energy toward said conveying means and articles carried thereon, the improvement comprising: a plurality of guide means positioned adjacent said conveying means and extending along the length thereof, said guide means being spaced apart across the width of said conveyor to thereby form a plurality of article-receiving aisles on said conveyor, said guide means including a plurality of wall members extending upwardly from said conveyor at an angle with respect thereto, each said wall member having reflective surfaces thereon for receiving said radiant energy such that said downwardly directed radiation is indirectly reflected toward the sides of said articles carried on said conveyor.
Claim 3
Dependent Claim
33 words
The apparatus as defined in claim 1 wherein said angular wall members are positioned at an angle with respect to the horizontal defined by said conveyor surface of about 40* to about 70*.
Claim 4
Dependent Claim
13 words
The apparatus as defined in claim 2 wherein Said angle is about 60*.
Claim 5
Dependent Claim
93 words
In a shoe making apparatus for heat setting an upper on a last, the improvement comprising: a source for generating infrared radiation; conveying means for conveying articles in the path of said radiation; a plurality of guide means positioned adjacent said conveying means and extending along the length thereof for guiding said articles through said radiation path; and angularly positioned wall means on said guide means extending upwardly from said conveying means, said wall means having reflective surfaces thereon for receiving and for directing said radiation toward the side surfaces of said articles.
Claim 6
Dependent Claim
93 words
In a shoe making apparatus for heat setting an upper on a last, the improvement comprising: a source for generating infrared radiation; conveying means for conveying articles in the path of said radiation; a plurality of guide means positioned adjacent said conveying means and extending along the length thereof for guiding said articles through said radiation path; and angularly positioned wall means on said guide means extending upwardly from said conveying means, said wall means having reflective surfaces thereon for receiving and for directing said radiation toward the side surfaces of said articles.
Claim 7
Dependent Claim
65 words
The apparatus as defined in claim 4 wherein said source is positioned above said conveying means and is adapted to direct said radiation downwardly and said angularly positioned wall means on said guide means is positioned at an acute angle with respect to said source to thereby receive and direct said radiation at an angle generally perpendicular to the angle of reception of said radiation.
Claim 8
Dependent Claim
45 words
The apparatus as defined in claim 1 and further including second wall means extending upwardly from at least some of said first-mentioned angularly positioned wall means, said second wall means dividing the aisles on opposite sides of said first wall means into individual heating zones.
Claim 9
Dependent Claim
33 words
The apparatus as defined in claim 6 wherein said angular wall means are positioned at an angle with respect to the horizontal defined by said conveying means of about 40* to about 70*.
Claim 10
Dependent Claim
13 words
The apparatus as defined in claim 7 wherein said angle is about 60*.
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |