Patent US3242569A successfully refreshed from Google Patents.
US3242569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry shaver head biased by springs of unequal strength
Assignee: US Philips Corp
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Filing: 1964-08-28
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Granted: 1966-03-29
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Expires: 1984-08-28
Abstract
No abstract record available.
Inventors
- 👤 Driest Jan Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:19
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A SHAVING HEAD FOR A DRY SHAVER COMPRISING A SHEAR PLATE, A ROTARY CUTTER CO-ACTING WITH SAID SHEAR PLATE, A PAIR OF SPRINGS OF UNEQUAL STRENGTH ARRANGED ON LINE WITH EACH OTHER AND SUPPORTING SAID SHEAR PLATE AND ROTARY CUTTER WHEREBY BOTH ARE DEPRESSIBLE AGAINST SAID SPRING PRESSURE, A STOP FOR ARRESTING THE MOVEMENT OF SAID SHEAR PLATE AND CUTTER IN ONE DIRECTION, A SLIDABLE ELEMENT HAVING SAID SPRINGS ENGAGING THEREWITH ON OPPOSITE SIDES THEREOF, AND A FIXED ABUTMENT AGAINST WHICH SAID SLIDABLE ELEMENT ENGAGES AFTER A GIVEN COMPRESSION OF SAID WEAKER SPRING BY A FORCE APPLIED TO THE SHEAR PLATE OF SAID DRY SHAVER.
Claim 2
Dependent Claim
105 words
A SHAVING HEAD FOR A DRY SHAVER COMPRISING A SHEAR PLATE, A ROTARY CUTTER CO-ACTING WITH SAID SHEAR PLATE, A PAIR OF SPRINGS OF UNEQUAL STRENGTH ARRANGED ON LINE WITH EACH OTHER AND SUPPORTING SAID SHEAR PLATE AND ROTARY CUTTER WHEREBY BOTH ARE DEPRESSIBLE AGAINST SAID SPRING PRESSURE, A STOP FOR ARRESTING THE MOVEMENT OF SAID SHEAR PLATE AND CUTTER IN ONE DIRECTION, A SLIDABLE ELEMENT HAVING SAID SPRINGS ENGAGING THEREWITH ON OPPOSITE SIDES THEREOF, AND A FIXED ABUTMENT AGAINST WHICH SAID SLIDABLE ELEMENT ENGAGES AFTER A GIVEN COMPRESSION OF SAID WEAKER SPRING BY A FORCE APPLIED TO THE SHEAR PLATE OF SAID DRY SHAVER.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |