US3309818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blast cleaning machines and removable panels therefor
Assignee: DS Brown Co Inc
•
Filing: 1964-06-05
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Granted: 1967-03-21
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Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 Delmont D Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:49
CPC Classifications
B; B24; B24C; B24C9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A BLAST CLEANING MACHINE COMPRISING WALLS DEFINING A BLAST CLEANING CHAMBER ADAPTED TO RECEIVE A WORKPIECE TO BE BLASTED, MEANS IN SAID CHAMBER FOR IMPELLING SMALL, HARD PARTICLES AGAINST SAID WORKPIECE, THE TOP WALL OF SAID CHAMBER BEING MADE OF REMOVABLE PANELS, EACH PANEL COMPRISING A HEAVY, METAL BASE TO WHICH IS BONDED A LAYER OF POLYURETHANE ELASTOMER, SAID LAYERS OF POLYURETHANE ELASTOMERS FACING DOWNWARDLY AND FORMING ABRASION-RESISTANT STRIKE SURFACES ON SAID TOP WALL, FIXEDLY MOUNTED, PARALLEL CHANNEL MEMBERS EXTENDING ALONG THE TOP WALL OF SAID CHAMBER, AND SAID PANELS BEING SLIDABLY REMOVABLY SUPPORTED IN SAID CHANNELS WITH OPPOSITE EDGES OF SAID RESPECTIVE METAL BASES OF SAID PANELS RESTING ON SAID CHANNEL MEMBERS.
Claim 2
Dependent Claim
113 words
A BLAST CLEANING MACHINE COMPRISING WALLS DEFINING A BLAST CLEANING CHAMBER ADAPTED TO RECEIVE A WORKPIECE TO BE BLASTED, MEANS IN SAID CHAMBER FOR IMPELLING SMALL, HARD PARTICLES AGAINST SAID WORKPIECE, THE TOP WALL OF SAID CHAMBER BEING MADE OF REMOVABLE PANELS, EACH PANEL COMPRISING A HEAVY, METAL BASE TO WHICH IS BONDED A LAYER OF POLYURETHANE ELASTOMER, SAID LAYERS OF POLYURETHANE ELASTOMERS FACING DOWNWARDLY AND FORMING ABRASION-RESISTANT STRIKE SURFACES ON SAID TOP WALL, FIXEDLY MOUNTED, PARALLEL CHANNEL MEMBERS EXTENDING ALONG THE TOP WALL OF SAID CHAMBER, AND SAID PANELS BEING SLIDABLY REMOVABLY SUPPORTED IN SAID CHANNELS WITH OPPOSITE EDGES OF SAID RESPECTIVE METAL BASES OF SAID PANELS RESTING ON SAID CHANNEL MEMBERS.
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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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |