Patent US2744456A successfully refreshed from Google Patents.
US2744456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conditioner for smoothing and vibrating concrete
Assignee: Blaw Knox Co
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Filing: 1954-07-13
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Granted: 1956-05-08
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Expires: 1974-07-13
Abstract
No abstract record available.
Inventors
- 👤 Clarence F Mittelstadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:41
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/30; E01C19/34; E01C19/40; E01C19/407
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A CONDITIONER FOR SMOOTHING AND VIBRATING CONCRETE BY MOVEMENT OVER THE SURFACE COMPRISING A RIGID METAL SECTION WHICH EXTENDS LONGITUDINALLY OF THE CONDITIONER, A METAL SKIN FORMING A HOLLOW SHELL SUBSTANTIALLY COEXTENSIVE WITH THE RIGID METAL SECTION HAVING A FLAT BOTTOM PORTION SPACED DOWNWARDLY FROM THE RIGID METAL SECTION AND UPTURNED SIDES SECURED AT THEIR UPPER EDGES TO SAID RIGID SECTION, MEANS FOR VIBRATING THE CONDITIONER VERTICALLY, AND FINGERS ON THE CONDITIONER EACH HAVING AN UPPER SHANK PORTION PASSING THROUGH THE BOTTOM OF THE SHELL AND RIGIDLY SECURED AT ITS UPPER END TO SAID RIGID METAL SECTION, AND EACH HAVING A FINGER PORTION PROJECTING ANGULARLY FROM THE PLANE OF THE BOTTOM OF THE SHELL, WHICH FINGER PORTION IS DESIGNED TO PENETRATE AND MOVE THROUGH THE CONCRETE ON WHICH THE FLAT SURFACE OF THE SHELL IS ENGAGED.
Claim 2
Dependent Claim
136 words
A CONDITIONER FOR SMOOTHING AND VIBRATING CONCRETE BY MOVEMENT OVER THE SURFACE COMPRISING A RIGID METAL SECTION WHICH EXTENDS LONGITUDINALLY OF THE CONDITIONER, A METAL SKIN FORMING A HOLLOW SHELL SUBSTANTIALLY COEXTENSIVE WITH THE RIGID METAL SECTION HAVING A FLAT BOTTOM PORTION SPACED DOWNWARDLY FROM THE RIGID METAL SECTION AND UPTURNED SIDES SECURED AT THEIR UPPER EDGES TO SAID RIGID SECTION, MEANS FOR VIBRATING THE CONDITIONER VERTICALLY, AND FINGERS ON THE CONDITIONER EACH HAVING AN UPPER SHANK PORTION PASSING THROUGH THE BOTTOM OF THE SHELL AND RIGIDLY SECURED AT ITS UPPER END TO SAID RIGID METAL SECTION, AND EACH HAVING A FINGER PORTION PROJECTING ANGULARLY FROM THE PLANE OF THE BOTTOM OF THE SHELL, WHICH FINGER PORTION IS DESIGNED TO PENETRATE AND MOVE THROUGH THE CONCRETE ON WHICH THE FLAT SURFACE OF THE SHELL IS ENGAGED.
References Cited (Backward Citations)
US2255344A
Cited
US2582486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |