US3435860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Top sharpening,floating sprocket chain saw
Assignee: Omark Industries Inc
•
Filing: 1966-11-18
•
Granted: 1969-04-01
•
Expires: 1986-11-18
Abstract
No abstract record available.
Inventors
- 👤 Kay Silvon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:38
CPC Classifications
B; B23; B23D; B23D63/00; B23D63/08; B23D63/16; B23D63/166; B23D63/168; Y; Y10; Y10T; Y10T83/00; Y10T83/303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A CHAIN SAW: A DRIVE SHAFT, A SPROCKET DRIVEN BY THE SHAFT AND MOVABLE ALONG THE SHAFT BETWEEN PREDETERMINED LIMITS, A SAW CHAIN HAVING TOP SHARPENABLE PROJECTING ELEMENTS, AND MESHING WITH AND DRIVEN BY THE SPROCKET, A SHARPENING MEMBER, SHARPENER FEED MEANS FOR MOVING THE SHARPENING MEMBER TRANSVERSELY RELATIVE TO THE SHAFT FROM A RETRACTED POSITION OUT OF ENGAGEMENT WITH THE TOPS OF THE PROJECTING ELEMENTS OF THE PORTIOPN OF THE SAW CHAIN ON THE SPROCKET TO A SHARPENING POSITION ENGAGING SAID TOPS OF THE PROJECTING ELEMENTS, AND ACTUATING MEANS INCLUDING MEANS ENGAGING THE SPROCKET AND ADAPTED TO CREATE BACK AND FORTH RELATIVE MOVEMENT BETWEEN THE SPROCKET AND THE SHARPENER MEMBER IN A DIRECTION PARALLEL TO THE SHAFT TO DRESS THE SHARPENING MEMBER.
Claim 2
Dependent Claim
124 words
IN A CHAIN SAW: A DRIVE SHAFT, A SPROCKET DRIVEN BY THE SHAFT AND MOVABLE ALONG THE SHAFT BETWEEN PREDETERMINED LIMITS, A SAW CHAIN HAVING TOP SHARPENABLE PROJECTING ELEMENTS, AND MESHING WITH AND DRIVEN BY THE SPROCKET, A SHARPENING MEMBER, SHARPENER FEED MEANS FOR MOVING THE SHARPENING MEMBER TRANSVERSELY RELATIVE TO THE SHAFT FROM A RETRACTED POSITION OUT OF ENGAGEMENT WITH THE TOPS OF THE PROJECTING ELEMENTS OF THE PORTIOPN OF THE SAW CHAIN ON THE SPROCKET TO A SHARPENING POSITION ENGAGING SAID TOPS OF THE PROJECTING ELEMENTS, AND ACTUATING MEANS INCLUDING MEANS ENGAGING THE SPROCKET AND ADAPTED TO CREATE BACK AND FORTH RELATIVE MOVEMENT BETWEEN THE SPROCKET AND THE SHARPENER MEMBER IN A DIRECTION PARALLEL TO THE SHAFT TO DRESS THE SHARPENING MEMBER.
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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |