US3309932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive mechanism for use in saws and the like
Assignee: Portable Electric Tools Inc
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Filing: 1964-06-04
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Granted: 1967-03-21
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Expires: 1984-06-04
Abstract
No abstract record available.
Inventors
- 👤 Robert K Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:01
CPC Classifications
B; B23; B23D; B23D51/00; B23D51/16; B23D51/161; B23D49/00; B23D49/10; B23D49/16; B23D49/162; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18208; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8841; Y10T83/8848
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
APPARATUS COMPRISING: A TOOL HOLDER; MEANS FOR GUIDING SAID TOOL HOLDER FOR RECIPROCAL MOVEMENT ALONG A PRESELECTED PATH; A DRIVER ROTATABLE SELECTIVELY IN OPPOSITE DIRECTIONS OF ROTATION ABOUT A FIRST AXIS INTERSECTING SAID PATH; A CRANK ARM FIXED TO SAID DRIVER; A CONNECTING LINK HAVING FIRST AND SECOND SPACED PORTIONS; MEANS PIVOTALLY CONNECTING SAID FIRST PORTION OF SAID LINK TO THE CRANK ARM AT A PRESELECTED DISTANCE FROM SAID FIRST AXIS; AND MEANS CONNECTING SAID SECOND PORTION OF SAID LINK TO SAID TOOL HOLDER FOR PIVOTAL MOVEMENT OF SAID SECOND PORTION ABOUT A SECOND AXIS PARALLEL TO SAID FIRST AXIS AND SPACED FROM SAID PATH OF RECIPROCATION OF SAID TOOL HOLDER, SAID CONNECTING MEANS PRECLUDING RELATIVE MOVEMENT BETWEEN SAID SECOND PORTION AND SAID TOOL HOLDER IN THE DIRECTION OF SAID PATH.
Claim 2
Dependent Claim
131 words
APPARATUS COMPRISING: A TOOL HOLDER; MEANS FOR GUIDING SAID TOOL HOLDER FOR RECIPROCAL MOVEMENT ALONG A PRESELECTED PATH; A DRIVER ROTATABLE SELECTIVELY IN OPPOSITE DIRECTIONS OF ROTATION ABOUT A FIRST AXIS INTERSECTING SAID PATH; A CRANK ARM FIXED TO SAID DRIVER; A CONNECTING LINK HAVING FIRST AND SECOND SPACED PORTIONS; MEANS PIVOTALLY CONNECTING SAID FIRST PORTION OF SAID LINK TO THE CRANK ARM AT A PRESELECTED DISTANCE FROM SAID FIRST AXIS; AND MEANS CONNECTING SAID SECOND PORTION OF SAID LINK TO SAID TOOL HOLDER FOR PIVOTAL MOVEMENT OF SAID SECOND PORTION ABOUT A SECOND AXIS PARALLEL TO SAID FIRST AXIS AND SPACED FROM SAID PATH OF RECIPROCATION OF SAID TOOL HOLDER, SAID CONNECTING MEANS PRECLUDING RELATIVE MOVEMENT BETWEEN SAID SECOND PORTION AND SAID TOOL HOLDER IN THE DIRECTION OF SAID PATH.
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) | 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 |