US3388916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic arbor
Assignee: Erickson Tool Co
•
Filing: 1966-03-11
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Granted: 1968-06-18
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Expires: 1986-03-11
Abstract
No abstract record available.
Inventors
- 👤 Franklyn E Winnen
- 👤 David D Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:18
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/30; B23B31/305; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1021; Y10T279/1024; Y10T279/1029; Y10T279/34; Y10T279/3487; Y10T82/00; Y10T82/26; Y10T82/266; Y10T82/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A HYDRAULIC ARBOR, AN ARBOR BODY AND A METAL WORKPIECE-GRIPPING SLEEVE TELESCOPED OVER SAID BODY AND DEFINING THEREBETWEEN A CHAMBER OF SUBSTANTIAL AXIAL LENGTH ADAPTED TO BE FILLED WITH A HYDRAULIC FLUID, PACKING RINGS RADIALLY SQUEEZED BETWEEN SAID BODY AND SLEEVE ADJACENT THE ENDS OF SAID CHAMBER EFFECTIVE TO SEAL THE BODY-SLEEVE JOINTS THEREAT, SAID SLEEVE BETWEEN SAID PACKING RINGS BEING RELATIVELY THIN SO AS TO BE RADIALLY EXPANDED TO GRIP A WORKPIECE UPON SUPPLYING FLUID PRESSURE TO SAID CHAMBER, SAID SLEEVE HAVING AN EXTERNAL TAPERED SURFACE AT ONE END AXIALLY ADJACENT THE CORRESPONDING PACKING RING, AND A WEDGE RING DISPOSED AROUND SAID EXTERNAL TAPERED SURFACE AND HAVING A CORRESPONDING TAPERED INTERNAL SURFACE IN MATING ENGAGEMENT THEREWITH FOR WEDGING SAID ONE END INTO TIGHT ENGAGEMENT WITH SAID BODY ADJACENT THE CORRESPONDING PACKING RING TO PRECLUDE RADIAL DEFORMATION THEREAT.
Claim 2
Dependent Claim
139 words
IN A HYDRAULIC ARBOR, AN ARBOR BODY AND A METAL WORKPIECE-GRIPPING SLEEVE TELESCOPED OVER SAID BODY AND DEFINING THEREBETWEEN A CHAMBER OF SUBSTANTIAL AXIAL LENGTH ADAPTED TO BE FILLED WITH A HYDRAULIC FLUID, PACKING RINGS RADIALLY SQUEEZED BETWEEN SAID BODY AND SLEEVE ADJACENT THE ENDS OF SAID CHAMBER EFFECTIVE TO SEAL THE BODY-SLEEVE JOINTS THEREAT, SAID SLEEVE BETWEEN SAID PACKING RINGS BEING RELATIVELY THIN SO AS TO BE RADIALLY EXPANDED TO GRIP A WORKPIECE UPON SUPPLYING FLUID PRESSURE TO SAID CHAMBER, SAID SLEEVE HAVING AN EXTERNAL TAPERED SURFACE AT ONE END AXIALLY ADJACENT THE CORRESPONDING PACKING RING, AND A WEDGE RING DISPOSED AROUND SAID EXTERNAL TAPERED SURFACE AND HAVING A CORRESPONDING TAPERED INTERNAL SURFACE IN MATING ENGAGEMENT THEREWITH FOR WEDGING SAID ONE END INTO TIGHT ENGAGEMENT WITH SAID BODY ADJACENT THE CORRESPONDING PACKING RING TO PRECLUDE RADIAL DEFORMATION THEREAT.
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) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |