Patent US3336569A successfully refreshed from Google Patents.
US3236111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jig saw
Assignee: Skil Corp
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Filing: 1961-01-06
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Granted: 1966-02-22
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Expires: 1981-01-06
Abstract
No abstract record available.
Inventors
- 👤 Lennart V Naslund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:44
CPC Classifications
B; B23; B23D; B23D49/00; B23D49/10; B23D49/16; B23D49/162; B23D49/165; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18248; Y10T74/18256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
221 words
IN A POWER OPERATED JIG SAW OF THE TYPE INCLUDING A HOUSING CONTAINING A MOTOR, AN ELONGATED VERTICALLY DISPOSED BLADE HOLDER HAVING A CROSS-HEAD SECURED TO THE UPPER END THEREOF AND BEING ADAPTED TO HAVE A SAW BLADE SECURED TO AND DEPENDING FROM THE LOWER END THEREOF, AND DRIVE MEANS OPERABLY CONNECTED BETWEEN THE MOTOR AND THE CROSS-HEAD FOR RECIPROCATING THE BLADE HOLDER AND AN ATTACHED BLADE IN A GENERALLY VERTICAL DIRECTION DURING OPERATION OF THE MOTOR, THE IMPROVEMENT WHICH COMPRISES, A GENERALLY SPHERICAL GUIDE MEMBER HAVING A VERTICAL PASSAGE THROUGH WHICH THE PORTION OF SAID BLADE HOLDER INTERMEDIATE ITS UPPER AND LOWER ENDS IS RECIPROCAL, SAID SPHERICAL GUIDE MEMBER BEING MOUNTED IN A GENERALLY SPHERICAL BEARING SOCKET FORMED IN THE LOWER PORTION OF SAID HOUSING WHEREBY TO PERMIT FORWARD AND REARWARD ROCKING MOVEMENT OF THE GUIDE MEMBER ABOUT A GENERALLY HORIZONTAL AXIS DURING RECIPROCATION OF SAID BLADE HOLDER THERETHROUGH, A CONTROL SURFACE INDEPENDENT OF SAID DRIVE MEANS DISPOSED IMMEDIATELY FORWARD OF THE PATH OF MOVEMENT OF THE CROSS-HEAD ABOVE SAID GUIDE MEMBER AND BEING INCLINED FORWARDLY IN A DOWNWARD DIRECTION, AND MEANS ASSOCIATED WITH THE DRIVE MEANS FOR RESILIENTLY RETAINING THE CROSS-HEAD AGAINST SAID CONTROL SURFACE DURING RECIPROCATION THEREOF WHEREBY THE UPPER END OF SAID BLADE HOLDER IS PIVOTED FORWARDLY ABOUT THE HORIZONTAL AXIS OF SAID GUIDE MEMBER DURING ITS
Claim 2
Dependent Claim
221 words
IN A POWER OPERATED JIG SAW OF THE TYPE INCLUDING A HOUSING CONTAINING A MOTOR, AN ELONGATED VERTICALLY DISPOSED BLADE HOLDER HAVING A CROSS-HEAD SECURED TO THE UPPER END THEREOF AND BEING ADAPTED TO HAVE A SAW BLADE SECURED TO AND DEPENDING FROM THE LOWER END THEREOF, AND DRIVE MEANS OPERABLY CONNECTED BETWEEN THE MOTOR AND THE CROSS-HEAD FOR RECIPROCATING THE BLADE HOLDER AND AN ATTACHED BLADE IN A GENERALLY VERTICAL DIRECTION DURING OPERATION OF THE MOTOR, THE IMPROVEMENT WHICH COMPRISES, A GENERALLY SPHERICAL GUIDE MEMBER HAVING A VERTICAL PASSAGE THROUGH WHICH THE PORTION OF SAID BLADE HOLDER INTERMEDIATE ITS UPPER AND LOWER ENDS IS RECIPROCAL, SAID SPHERICAL GUIDE MEMBER BEING MOUNTED IN A GENERALLY SPHERICAL BEARING SOCKET FORMED IN THE LOWER PORTION OF SAID HOUSING WHEREBY TO PERMIT FORWARD AND REARWARD ROCKING MOVEMENT OF THE GUIDE MEMBER ABOUT A GENERALLY HORIZONTAL AXIS DURING RECIPROCATION OF SAID BLADE HOLDER THERETHROUGH, A CONTROL SURFACE INDEPENDENT OF SAID DRIVE MEANS DISPOSED IMMEDIATELY FORWARD OF THE PATH OF MOVEMENT OF THE CROSS-HEAD ABOVE SAID GUIDE MEMBER AND BEING INCLINED FORWARDLY IN A DOWNWARD DIRECTION, AND MEANS ASSOCIATED WITH THE DRIVE MEANS FOR RESILIENTLY RETAINING THE CROSS-HEAD AGAINST SAID CONTROL SURFACE DURING RECIPROCATION THEREOF WHEREBY THE UPPER END OF SAID BLADE HOLDER IS PIVOTED FORWARDLY ABOUT THE HORIZONTAL AXIS OF SAID GUIDE MEMBER DURING ITS
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |