US3216513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter assemblies for rock drilling
Assignee: JAMES S ROBBINS AND ASSOCIATES Inc
•
Filing: 1964-01-06
•
Granted: 1965-11-09
•
Expires: 1984-01-06
Abstract
No abstract record available.
Inventors
- 👤 Richard J Robbins
- 👤 Douglas F Winberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:31
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/08; E21B10/22; E21B10/25; E21B10/12; E21B10/46; E21B10/50; E21D; E21D9/00; E21D9/10; E21D9/1006; E21D9/104; F; F16; F16C; F16C19/00; F16C19/49; F16C2352/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A ROCK BORING CUTTER ASSEMBLY COMPRISING A ROTARY CUTTING WHEEL HAVING AN EXTERNAL SURFACE CONFIGURED TO ENGAGE AND BREAK ROCK FORMATIONS; MOUNTING MEANS FOR SAID CUTTING WHEEL INCLUDING AN INTEGRAL FRAME RECESSED TO SNUGLY SURROUND A PORTION OF A SIDE AND THE ENDS OF SAID CUTTING WHEEL AND HAVING A BASE PORTION ADAPTED TO BE MOUNTED IN FIXED POSITION ON THE ROTARY CUTTERHEAD OF A ROCK BORING MACHINE WITH THE RECESSED PORTION OF THE FRAME FACING AWAY FROM THE SURFACE OF THE CUTTERHEAD ON WHICH THE FRAME IS MOUNTED, THE SAID MOUNTING MEANS FURTHER INCLUDING ANTI-FRICTION BEARING MEANS SUPPORTING SAID CUTTING WHEEL FOR ROTATION AND PREVENTING ENDWISE MOVEMENT OF SAID CUTTING WHEEL WITH RESPECT TO SAID FRAME; AND RESILIENTLY CUSHIONED METAL-TO-METAL SEAL MEANS BETWEEN SAID CUTTING WHEEL AND SAID MOUNTING MEANS FOR PREVENTING THE INGRESS OF GRIT INTO SAID BEARING MEANS, SAID SEAL MEANS COMPRISING A FIXED SEAL RING DISPOSED ON SAID MOUNTING MEANS AND HAVING A METALLIC SEAL FACE, A ROTARY SEAL RING DISPOSED ON SAID CUTTING WHEEL AND HAVING
Claim 2
Dependent Claim
171 words
A ROCK BORING CUTTER ASSEMBLY COMPRISING A ROTARY CUTTING WHEEL HAVING AN EXTERNAL SURFACE CONFIGURED TO ENGAGE AND BREAK ROCK FORMATIONS; MOUNTING MEANS FOR SAID CUTTING WHEEL INCLUDING AN INTEGRAL FRAME RECESSED TO SNUGLY SURROUND A PORTION OF A SIDE AND THE ENDS OF SAID CUTTING WHEEL AND HAVING A BASE PORTION ADAPTED TO BE MOUNTED IN FIXED POSITION ON THE ROTARY CUTTERHEAD OF A ROCK BORING MACHINE WITH THE RECESSED PORTION OF THE FRAME FACING AWAY FROM THE SURFACE OF THE CUTTERHEAD ON WHICH THE FRAME IS MOUNTED, THE SAID MOUNTING MEANS FURTHER INCLUDING ANTI-FRICTION BEARING MEANS SUPPORTING SAID CUTTING WHEEL FOR ROTATION AND PREVENTING ENDWISE MOVEMENT OF SAID CUTTING WHEEL WITH RESPECT TO SAID FRAME; AND RESILIENTLY CUSHIONED METAL-TO-METAL SEAL MEANS BETWEEN SAID CUTTING WHEEL AND SAID MOUNTING MEANS FOR PREVENTING THE INGRESS OF GRIT INTO SAID BEARING MEANS, SAID SEAL MEANS COMPRISING A FIXED SEAL RING DISPOSED ON SAID MOUNTING MEANS AND HAVING A METALLIC SEAL FACE, A ROTARY SEAL RING DISPOSED ON SAID CUTTING WHEEL AND HAVING
References Cited (Backward Citations)
US1516340A
Cited
US1634318A
Cited
US1993268A
Cited
US1884965A
Cited
US2797067A
Cited
US3180648A
Cited
US3073657A
Cited
US3151691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |