US4047296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-edge shaving blade unit having anti-clogging means
Assignee: Feather Safety Razor Co Ltd
•
Filing: 1976-07-27
•
Granted: 1977-09-13
•
Expires: 1996-07-27
Abstract
Abstract A two-edge shaving blade unit having a member for ejecting shaved hair particles and other matter deposited in and clogging a space between the leading and following cutting edges. The upper and lower blade elements are fixed between a platform and a cap portion in a parallel and spaced relation with a spacer interposed therebetween. The ejecting member is retained between the upper and lower blade elements and is loosely fitted around the spacer in a manner displaceable between an advanced and a retracted positions. The cap portion has a resilient rear wall having a knob at its laterally intermediate portion, and to this knob is connected the ejecting member. The ejecting member can be displaced forwardly into the advanced position when the knob is pushed manually so as to eject the hair particles and other matter deposited in and clogging the space between the leading and following cutting edges. Further, when the pushing force on the knob is removed, the knob and thus the ejecting member are displaced to the original retracted position with the resilient force of the resilient rear wall.
Inventors
- 👤 Minoru Ishida
- 👤 Shigeru Ozeki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:08
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/40; B26B21/4062
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
137 words
A two-edge shaving blade unit comprising: a platform portion, a cap portion, two blade elements fixed between said platform and cap portion, said blade elements being disposed parallel to each other in spaced relation to provide the leading and following cutting edges, spacer means fixed between said platform and cap portions for retaining said blade elements in spaced relation, said spacer means comprising an elongated flat member supported between said blade elements, means disposed between two said blade elements for ejecting the shaved hair particles and other matter deposited therebetween, said ejecting means comprising a flat member formed with an opening loosely fitting around said spacer means and being displaceable between an advanced and a retracted portion and ordinarily retained in the retracted position, and means for manually retractably displacing said ejecting means into the advanced position.
Claim 2
Dependent Claim
137 words
A two-edge shaving blade unit comprising: a platform portion, a cap portion, two blade elements fixed between said platform and cap portion, said blade elements being disposed parallel to each other in spaced relation to provide the leading and following cutting edges, spacer means fixed between said platform and cap portions for retaining said blade elements in spaced relation, said spacer means comprising an elongated flat member supported between said blade elements, means disposed between two said blade elements for ejecting the shaved hair particles and other matter deposited therebetween, said ejecting means comprising a flat member formed with an opening loosely fitting around said spacer means and being displaceable between an advanced and a retracted portion and ordinarily retained in the retracted position, and means for manually retractably displacing said ejecting means into the advanced position.
Claim 3
Dependent Claim
154 words
A two-edge shaving blade unit comprising: a platform portion, a cap portion, two blade elements fixed between said platform and cap portions, said blade elements being disposed parallel to each other in spaced relation to provide the leading and following cutting edges, spacer means fixed between said platform and cap portions for retaining said blade elements in spaced relation, means disposed between said two blade elements for ejecting the shaved hair particles and other matter deposited therebetween, said ejecting means being displaceable between an advanced and a retracted position and ordinarily retained in the retracted position, and means for manually retractably displacing said ejecting means into the advanced position and comprising a thin resilient wall provided at a rear end portion of said cap portion and a knob projecting from a laterally intermediate portion of said resilient wall, said knob being connected to a projection formed at a rear end of said ejecting means.
Claim 4
Dependent Claim
154 words
A two-edge shaving blade unit comprising: a platform portion, a cap portion, two blade elements fixed between said platform and cap portions, said blade elements being disposed parallel to each other in spaced relation to provide the leading and following cutting edges, spacer means fixed between said platform and cap portions for retaining said blade elements in spaced relation, means disposed between said two blade elements for ejecting the shaved hair particles and other matter deposited therebetween, said ejecting means being displaceable between an advanced and a retracted position and ordinarily retained in the retracted position, and means for manually retractably displacing said ejecting means into the advanced position and comprising a thin resilient wall provided at a rear end portion of said cap portion and a knob projecting from a laterally intermediate portion of said resilient wall, said knob being connected to a projection formed at a rear end of said ejecting means.
Claim 5
Dependent Claim
41 words
A two edge shaving blade unit as defined in claim 2, wherein said cap portion is formed of plastic materials, and said resilient wall is provided by forming a laterally elongated slot along the rear end portion of said cap portion.
References Cited (Backward Citations)
US2399552A
Cited
US3972114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |