US3308729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating system for manually guided motor driven working device
Assignee: HERMANN WACKER AND PETER WACKER
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Filing: 1964-07-20
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Granted: 1967-03-14
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Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Kestel Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:34
CPC Classifications
E; E02; E02D; E02D3/00; E02D3/02; E02D3/046; E02D3/068; B; B22; B22C; B22C15/00; B22C15/10; B22C15/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN A MOTOR DRIVEN AND MANUALLY GUIDED WORKING DEVICE OPERATIVE TO EFFECT RECIPROCATING MOVEMENTS AND COMPRISING A HOUSING, A MOTOR AND TRANSMISSION MEANS INCLUDING A PINION, A GEAR AND A CRANK MOUNTED IN SAID HOUSING, SAID HOUSING HAVING A PORTION DEFINING AN INNER AND AN OUTER CYLINDER PORTION WITH A SPACE THEREBETWEEN, A RECIPROCATING SYSTEM DISPOSED IN SAID INNER CYLINDER PORTION AND COMPRISING A WORKING CYLINDER MOUNTED FOR RECIPROCATING MOVEMENT IN SAID INNER CYLINDER PORTION, SAID WORKING CYLINDER HAVING AN OPEN END WALL AND A BOTTOM END WALL, A WORKING TOOL CONNECTED TO THE BOTTOM END WALL OF SAID WORKING CYLINDER, A PISTON HAVING A CONNECTING PIN RECIPROCABLY MOUNTED IN SAID WORKING CYLINDER, SPRING MEANS DISPOSED INTERMEDIATE SAID PISTON AND SAID TOP WALL AND INTERMEDIATE SAID PISTON AND SAID BOTTOM WALL, A CONNECTING ROD EXTENDING BETWEEN SAID CRANK AND SAID CONNECTING PIN AND A RESILIENT BLOCK MOUNTED ON SAID BOTTOM END WALL TO PROTECT THE LOWER SPRING MEANS AGAINST SHOCK BLOWS AND THEREBY AGAINST WEAR AND BREAKAGE.
Claim 2
Dependent Claim
167 words
IN A MOTOR DRIVEN AND MANUALLY GUIDED WORKING DEVICE OPERATIVE TO EFFECT RECIPROCATING MOVEMENTS AND COMPRISING A HOUSING, A MOTOR AND TRANSMISSION MEANS INCLUDING A PINION, A GEAR AND A CRANK MOUNTED IN SAID HOUSING, SAID HOUSING HAVING A PORTION DEFINING AN INNER AND AN OUTER CYLINDER PORTION WITH A SPACE THEREBETWEEN, A RECIPROCATING SYSTEM DISPOSED IN SAID INNER CYLINDER PORTION AND COMPRISING A WORKING CYLINDER MOUNTED FOR RECIPROCATING MOVEMENT IN SAID INNER CYLINDER PORTION, SAID WORKING CYLINDER HAVING AN OPEN END WALL AND A BOTTOM END WALL, A WORKING TOOL CONNECTED TO THE BOTTOM END WALL OF SAID WORKING CYLINDER, A PISTON HAVING A CONNECTING PIN RECIPROCABLY MOUNTED IN SAID WORKING CYLINDER, SPRING MEANS DISPOSED INTERMEDIATE SAID PISTON AND SAID TOP WALL AND INTERMEDIATE SAID PISTON AND SAID BOTTOM WALL, A CONNECTING ROD EXTENDING BETWEEN SAID CRANK AND SAID CONNECTING PIN AND A RESILIENT BLOCK MOUNTED ON SAID BOTTOM END WALL TO PROTECT THE LOWER SPRING MEANS AGAINST SHOCK BLOWS AND THEREBY AGAINST WEAR AND BREAKAGE.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |