Patent US3218708A successfully refreshed from Google Patents.
US3218708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically operated dry shaver
Assignee: Sunbeam Corp
•
Filing: 1963-06-07
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Granted: 1965-11-23
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Expires: 1983-06-07
Abstract
No abstract record available.
Inventors
- 👤 Albert R Spohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:44
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/28; B26B19/282; H; H02; H02K; H02K33/00; H02K33/02; H02K33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A HEAD FOR A MOTOR DRIVEN DRY SHAVER COMPRISING A FIXED COMB AND A CUTTER MOUNTED FOR RECIPROCATING MOVEMENT IN ENGAGEMENT WITH SAID COMB, AN ELONGATED SPRING FOR BIASING SAID CUTTER INTO CUTTING ENGAGEMENT WITH SAID COMB, SAID SPRING HAVING A CENTRAL PORTION AND SPACED END PORTIONS ALIGNED WITH EACH OTHER, SAID END PORTIONS INTERCONNECTED TO SAID CENTRAL PORTION BY U-SHAPED PORTIONS, SAID END PORTIONS HAVING EXTENSIONS OF REDUCED WIDTH WHICH ARE RECEIVABLE IN SLOTS FORMED IN SAID CUTTER, SAID SPRING BEING COMPRESSED LENGTHWISE IN SAID U-SHAPED PORTIONS WHEN SAID EXTENSIONS ARE RECEIVED IN SAID SLOTS, AND DRIVING ABUTMENTS ON SAID CUTTER FOR ENGAGEMENT WITH A MOTOR DRIVEN ARM, SAID CENTRAL PORTION BEING POSITIONED ADJACENT SAID ABUTMENTS TO ENGAGE THE END OF SAID DRIVEN ARM AND BIAS SAID CUTTER AGAINST SAID COMB.
Claim 2
Dependent Claim
132 words
A HEAD FOR A MOTOR DRIVEN DRY SHAVER COMPRISING A FIXED COMB AND A CUTTER MOUNTED FOR RECIPROCATING MOVEMENT IN ENGAGEMENT WITH SAID COMB, AN ELONGATED SPRING FOR BIASING SAID CUTTER INTO CUTTING ENGAGEMENT WITH SAID COMB, SAID SPRING HAVING A CENTRAL PORTION AND SPACED END PORTIONS ALIGNED WITH EACH OTHER, SAID END PORTIONS INTERCONNECTED TO SAID CENTRAL PORTION BY U-SHAPED PORTIONS, SAID END PORTIONS HAVING EXTENSIONS OF REDUCED WIDTH WHICH ARE RECEIVABLE IN SLOTS FORMED IN SAID CUTTER, SAID SPRING BEING COMPRESSED LENGTHWISE IN SAID U-SHAPED PORTIONS WHEN SAID EXTENSIONS ARE RECEIVED IN SAID SLOTS, AND DRIVING ABUTMENTS ON SAID CUTTER FOR ENGAGEMENT WITH A MOTOR DRIVEN ARM, SAID CENTRAL PORTION BEING POSITIONED ADJACENT SAID ABUTMENTS TO ENGAGE THE END OF SAID DRIVEN ARM AND BIAS SAID CUTTER AGAINST SAID COMB.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |