US4012837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry shavers
Assignee: Gillette Co LLC
•
Filing: 1975-06-23
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Granted: 1977-03-22
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Expires: 1995-06-23
Abstract
Abstract An electric shaver having a shaving foil and a movable inner cutter cooperating therewith, wherein the inner cutter comprises a cutter body and a plurality of cutter blades mounted thereon, each cutter blade comprising integrally formed first and second parts lying in a single plane, the first part having a cutting edge and the second part providing an abutment against the cutter body, the second part being resiliently deformable relative to the first part in the plane of the blade and being so deformed by assembly of the inner cutter beneath the shaving foil so that the cutter edge is resiliently urged into engagement with the foil.
Inventors
- 👤 Enzo Ascoli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:10
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
157 words
In an electric shaver having a shaving foil which is removable from the shaver and a movable inner cutter cooperating therewith, wherein the inner cutter comprises a cutter body having slots therein and a plurality of cutter blades mounted in the slots, the improvement wherein each cutter blade comprises integrally formed first and second parts lying in a single plane, the first part having a cutting edge and the second part being resiliently deformable relative to the first part in the plane of the blade and being pressed against the cutter body to be deformed towards the cutting edge by assembly of the inner cutter beneath the shaving foil to resiliently urge the cutting edge of the first part of the cutter blade into engagement with the foil and the cutter body is provided with retaining means engaging the first part for retaining the blades in the slots when the shaving foil is removed from the shaver.
Claim 2
Dependent Claim
157 words
In an electric shaver having a shaving foil which is removable from the shaver and a movable inner cutter cooperating therewith, wherein the inner cutter comprises a cutter body having slots therein and a plurality of cutter blades mounted in the slots, the improvement wherein each cutter blade comprises integrally formed first and second parts lying in a single plane, the first part having a cutting edge and the second part being resiliently deformable relative to the first part in the plane of the blade and being pressed against the cutter body to be deformed towards the cutting edge by assembly of the inner cutter beneath the shaving foil to resiliently urge the cutting edge of the first part of the cutter blade into engagement with the foil and the cutter body is provided with retaining means engaging the first part for retaining the blades in the slots when the shaving foil is removed from the shaver.
Claim 3
Dependent Claim
42 words
An electric shaver according to claim 1, wherein the resiliently deformable second part is provided with abutments projecting in the plane of the blade away from the cutting edge and for cooperation with the bottom of the slots in the cutter body.
Claim 4
Dependent Claim
63 words
An electric shaver according to claim 1, wherein the first part of each blade is a rigid part carrying the cutting edge, the second part of each blade comprises a resilient arm, and each blade further comprises a central bridge connecting the rigid first part with the center of the resilient arm, said first part, second part and central bridge all being coplanar.
Claim 5
Dependent Claim
44 words
An electric shaver as claimed in claim 3, wherein the resilient arm has free ends and tapers in width from the central bridge towards its free ends so that when deformed said resilient arm is subject to substantially uniform bending strain along its length.
Claim 6
Dependent Claim
75 words
An electric shaver according to claim 3, wherein the inner cutter is mounted for arcuate oscillation or rotation beneath cylindrically curved foil, and the first part of each blade comprises a substantially straight rigid arm carrying the cutting edge connected through the central bridge to the resilient arm of the respective second part, the resilient arm of each second part comprising a substantially straight resilient arm extending in parallel coplanar relationship to the rigid arm.
Claim 7
Dependent Claim
126 words
In an electric shaver comprising a movable inner cutter including a cutter body having slots therein, a plurality of cutter blades mounted in the slots, and cutter blade retaining means; and an outer removable shaving foil, the improvement wherein each of said cutter blades comprises: integrally formed coplanar first and second parts, the first part being substantially rigid and being formed with a cutter edge for cooperation with the foil, and the second part being resiliently deformable relative to the first part, towards the cutting edge in the plane of the blade, said first part including engaging means for engaging the cutter blade retaining means of the cutter body to retain the cutter blades in the slots when the shaving foil is removed from the shaver.
Claim 8
Dependent Claim
126 words
In an electric shaver comprising a movable inner cutter including a cutter body having slots therein, a plurality of cutter blades mounted in the slots, and cutter blade retaining means; and an outer removable shaving foil, the improvement wherein each of said cutter blades comprises: integrally formed coplanar first and second parts, the first part being substantially rigid and being formed with a cutter edge for cooperation with the foil, and the second part being resiliently deformable relative to the first part, towards the cutting edge in the plane of the blade, said first part including engaging means for engaging the cutter blade retaining means of the cutter body to retain the cutter blades in the slots when the shaving foil is removed from the shaver.
Claim 9
Dependent Claim
63 words
A cutter blade according to claim 6, wherein the first part of each blade is a rigid part carrying the cutting edge, the second part of each blade comprises a resilient arm, and each blade further comprises a central bridge connecting the rigid first part with the center of the resilient arm, said first part, second part and central bridge all being coplanar.
Claim 10
Dependent Claim
43 words
A cutter blade according to claim 7, wherein the resilient arm has free ends and tapers in width from the central bridge towards its free ends so that when deformed said resilient arm is subject to substantially uniform bending strain along its length.
Claim 11
Dependent Claim
21 words
A cutter blade according to claim 6, wherein said first and second parts comprise a stamping from a flat metallic sheet.
Claim 12
Dependent Claim
11 words
A cutter blade according to claim 6, made of tempered steel.
Claim 13
Dependent Claim
11 words
A cutter blade according to claim 6, made of beryllum-bronze alloy.
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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) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |