US3095637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making blower blade sheet
Assignee: Lau Blower Co
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Filing: 1959-01-26
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Granted: 1963-07-02
•
Expires: 1979-01-26
Abstract
No abstract record available.
Inventors
- 👤 Marion I Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:36
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/281; F04D29/282; F04D29/283; B; B23; B23P; B23P15/00; B23P15/006; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49329
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
230 words
THE METHOD OF FORMING A BLOWER BLADE SHEET WHICH COMPRISES THE STEPS OF BLANKING OUT A FLAT SHEET OF METAL BY CUTTING THROUGH SAID SHEET A SERIES OF PARALLEL SLITS EXTENDING CROSSWISE THEREOF TO DEFINE THE LEADING AND TRAILING EDGE OF A SERIES OF BLADE PORTIONS, CUTTING THROUGH SAID SHEET A SERIES OF DISCONNECTED SLOTS LOCATED AT THE ENDS OF SAID BLADE PORTIONS WITH SAID SLOTS EXTENDING GENERALLY LENGTHWISE OF SAID SHEET AND SPACED A SHORT DISTANCE INWARDLY OF THE SIDES THEREOF TO CREATE A CONTINOUS MARGINAL STRIP ALONG EACH SIDE OF SAID SHEET, SAID SLOTS DIVERGING LATERALLY AT A PREDETERMINED ANGLE FROM THE TRAILING EDGE OF SAID BLADE PORTIONS TO DEFINE AN INNER EDGE OF SAID MARGINAL STRIPS, TRIMMING THE OUTER EDGE OF SAID MARGINAL STRIP OPPOSITE SAID SLOTS TO SAID PREDETERMINED ANGLE SO THAT SAID MARGINAL STRIPS HAVE A UNIFORM WIDTH OPPOSITE SAID SLOTS, SAID SLOTS SPACED APART A PREDETERMINED DISTANCE TO LEAVE A GUSSET OF METAL BETWEEN SAID SLOTS AND BETWEEN EACH SAID MARGINAL STRIP AND THE REMAINDER OF SAID BLADE INCLUDING THE LEADING EDGE THEREOF, DEFORMING SAID BLADE PORTIONS OUT OF THE PLANE OF SAID SHEET TO FORM BLADES, AND BENDING SAID GUSSETS GENERALLY AT RIGHT ANGLES TO THE PLANE OF SAID SHEET AND STRAIGHTENING SAID MARGINAL STRIPS TO SUBSTANTIALLY PARALLEL RELATION WITH THE LONGITUDINAL AXIS OF SAID SHEET FOR INCREASING THE SPACING BETWEEN SAID BLADES.
Claim 2
Independent Claim
230 words
THE METHOD OF FORMING A BLOWER BLADE SHEET WHICH COMPRISES THE STEPS OF BLANKING OUT A FLAT SHEET OF METAL BY CUTTING THROUGH SAID SHEET A SERIES OF PARALLEL SLITS EXTENDING CROSSWISE THEREOF TO DEFINE THE LEADING AND TRAILING EDGE OF A SERIES OF BLADE PORTIONS, CUTTING THROUGH SAID SHEET A SERIES OF DISCONNECTED SLOTS LOCATED AT THE ENDS OF SAID BLADE PORTIONS WITH SAID SLOTS EXTENDING GENERALLY LENGTHWISE OF SAID SHEET AND SPACED A SHORT DISTANCE INWARDLY OF THE SIDES THEREOF TO CREATE A CONTINOUS MARGINAL STRIP ALONG EACH SIDE OF SAID SHEET, SAID SLOTS DIVERGING LATERALLY AT A PREDETERMINED ANGLE FROM THE TRAILING EDGE OF SAID BLADE PORTIONS TO DEFINE AN INNER EDGE OF SAID MARGINAL STRIPS, TRIMMING THE OUTER EDGE OF SAID MARGINAL STRIP OPPOSITE SAID SLOTS TO SAID PREDETERMINED ANGLE SO THAT SAID MARGINAL STRIPS HAVE A UNIFORM WIDTH OPPOSITE SAID SLOTS, SAID SLOTS SPACED APART A PREDETERMINED DISTANCE TO LEAVE A GUSSET OF METAL BETWEEN SAID SLOTS AND BETWEEN EACH SAID MARGINAL STRIP AND THE REMAINDER OF SAID BLADE INCLUDING THE LEADING EDGE THEREOF, DEFORMING SAID BLADE PORTIONS OUT OF THE PLANE OF SAID SHEET TO FORM BLADES, AND BENDING SAID GUSSETS GENERALLY AT RIGHT ANGLES TO THE PLANE OF SAID SHEET AND STRAIGHTENING SAID MARGINAL STRIPS TO SUBSTANTIALLY PARALLEL RELATION WITH THE LONGITUDINAL AXIS OF SAID SHEET FOR INCREASING THE SPACING BETWEEN SAID BLADES.
References Cited (Backward Citations)
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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) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |