US3894360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support-shielding blasting machine blade
Assignee: Benfur Engineering Co
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Filing: 1974-04-30
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Granted: 1975-07-15
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Expires: 1994-04-30
Abstract
Abstract A blasting machine blade is mounted so that the blade configuration shields the blade support from exposure to abrasive particles.
Inventors
- 👤 John Degroot
- 👤 Bernard Fuerst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:38
CPC Classifications
B; B24; B24C; B24C5/00; B24C5/06; B24C5/062
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
51 words
A blade for a blasting machine, said blade having means on a portion of the back surface thereof adapted to interengage with supporting means, wherein the improvement comprises: an offset shielding portion extending transversely to said back surface along the inner portion of said blade normally inward of said support means.
Claim 2
Dependent Claim
51 words
A blade for a blasting machine, said blade having means on a portion of the back surface thereof adapted to interengage with supporting means, wherein the improvement comprises: an offset shielding portion extending transversely to said back surface along the inner portion of said blade normally inward of said support means.
Claim 3
Dependent Claim
135 words
A blasting machine having a rotor including at least one blade normally secured at the back thereof in a substantially radial position to bracket means mounted on a rotor frame, said blade terminating at the inner extremity thereof radially outward from the axis of rotation of said rotor, said machine also having feeding means adapted to deposit particulate abrasive material in the space defined by the path of rotary movement of the radially inner end of said blade, wherein the improvement comprises: an offset shielding portion on said blade normally disposed radially inward from the portion of said bracket means providing a supporting surface for said blade, said shielding portion extending transversely from the back of said blade to form an abutment opposite the inner extremity of the junction of said blade and bracket means.
Claim 4
Dependent Claim
135 words
A blasting machine having a rotor including at least one blade normally secured at the back thereof in a substantially radial position to bracket means mounted on a rotor frame, said blade terminating at the inner extremity thereof radially outward from the axis of rotation of said rotor, said machine also having feeding means adapted to deposit particulate abrasive material in the space defined by the path of rotary movement of the radially inner end of said blade, wherein the improvement comprises: an offset shielding portion on said blade normally disposed radially inward from the portion of said bracket means providing a supporting surface for said blade, said shielding portion extending transversely from the back of said blade to form an abutment opposite the inner extremity of the junction of said blade and bracket means.
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) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |