US4675998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry-shaving apparatus
Assignee: US Philips Corp
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Filing: 1985-09-26
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Granted: 1987-06-30
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Expires: 2005-09-26
Abstract
Abstract A dry-shaving apparatus includes a shaving unit comprising an external shaving member provided with hair-entry apertures; and an internal shaving member associated with and rotatable relative to the external shaving member, the internal shaving member being formed with a plurality of cutting blades for engagement with the external shaving member. A first resilient element engages the internal shaving member and exerts pressure thereagainst. A ball bearing member is centrally positioned between the external shaving member and the internal shaving member and engages the internal shaving member. A second resilient element is associated with the external shaving member and engages the ball bearing member.
Inventors
- 👤 Carel J. Thijsse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:10
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/14; B26B19/141; B26B19/143
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A dry-shaving apparatus including a shaving unit comprising an external shaving member provided with hair-entry apertures; an internal shaving member associated with and rotatable relative to the external shaving member, said internal shaving member being formed with a plurality of cutting blades for engagement with the external shaving member; a first resilient element engaging the internal shaving member and exerting pressure thereagainst; a ball bearing member centrally positioned between the external shaving member and the internal shaving member and engaging the internal shaving member; and a second resilient element associated with the external shaving member and engaging the ball bearing member.
Claim 2
Dependent Claim
101 words
A dry-shaving apparatus including a shaving unit comprising an external shaving member provided with hair-entry apertures; an internal shaving member associated with and rotatable relative to the external shaving member, said internal shaving member being formed with a plurality of cutting blades for engagement with the external shaving member; a first resilient element engaging the internal shaving member and exerting pressure thereagainst; a ball bearing member centrally positioned between the external shaving member and the internal shaving member and engaging the internal shaving member; and a second resilient element associated with the external shaving member and engaging the ball bearing member.
Claim 3
Dependent Claim
21 words
A dry-shaving apparatus according to claim 1, in which the external shaving member includes a holder for the ball bearing member.
Claim 4
Dependent Claim
18 words
A dry-shaving apparatus according to claim 2, in which the second resilient element is positioned within the holder.
Claim 5
Dependent Claim
18 words
A dry-shaving apparatus according to claim 2, in which the second resilient element forms part of the holder.
Claim 6
Dependent Claim
21 words
A dry-shaving apparatus according to claim 1, in which the second resilient element is formed integrally with the external shaving member.
Claim 7
Dependent Claim
18 words
A dry-shaving apparatus according to claim 1, in which the second resilient element is formed from sheet material.
References Cited (Backward Citations)
US3618210A
Cited
US3639979A
Cited
US3748731A
Cited
US3903597A
Cited
US3913225A
Cited
US4219930A
Cited
US4275497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-29 | 1990-12-29 | 1991-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-29 | 1994-12-29 | 1995-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-29 | 1998-12-29 | 1999-06-30 | $7700.00 | Window Closed / Lapsed |