US3783510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Razor having tandemly mounted blades bonded in a disposable cartridge
Assignee: Warner Lambert Co LLC
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Filing: 1971-10-22
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Granted: 1974-01-08
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Expires: 1991-10-22
Abstract
Abstract The specific disclosure provides a disposable bonded blade cartridge having a pair of single edge blades tandemly mounted and vertically spaced apart by a spacer. The blades and the spacer are permanently bonded in the cartridge, and the spacer has a plurality of channels for providing flow paths for shaving residue from between the cutting edges of the tandemly mounted blades rearwardly between the blades and out the rear end of the cartridge. The cartridge comprises an upper cap portion and a lower blade seat portion. The lower blade is positioned against vertically rising stops extending from the front part of the blade seat portion. The spacer is also positioned against the stops of the blade seat portion, and the upper blade is positioned against vertically rising stops of the forward and outward portions of the spacer. The cap portion has a plurality of posts extending downwardly through the blades, spacer and blade seat portion which are deformed at the lower ends thereof to bond the components of the cartridge together. A T-shaped channel is formed in the lower side of the blade seat portion for sliding engagement with outwardly extending flanges formed at the top end of a holder.
Inventors
- 👤 J Dawidowicz
- 👤 F Ferraro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:39
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/08; B65D83/10; B26; B26B; B26B21/00; B26B21/08; B26B21/14; B26B21/22; B26B21/222; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C65/56; B29C65/60; B29C65/606; B29L; B29L2031/00; B29L2031/718; B29L2031/7186
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
219 words
A disposable razor blade cartridge comprising: an elongated blade seat member having an elongated guard surface defining a front surface of said blade seat member, and a pair of spaced bottom blade stop members extending upwardly from said blade seat member; a bottom blade located on said blade seat member with a forward cutting edge abutting the bottom blade stop members, said bottom blade cutting edge being spaced upwardly and rearwardly of said guard surface; an elongated spacer located on Said bottom blade comprising a pair of spaced top blade stop members, and a plurality of forwardly opened channels, each of said top blade stop members abutting a different one of the bottom blade stop members, and said channels extending rearwardly of said bottom blade; a top blade located on said spacer with a forward cutting edge abutting said top blade stop members, said top blade cutting edge being spaced upwardly and rearwardly of said bottom blade cutting edge; a cap member located on said top blade; means for permanently bonding said bottom blade, said spacer and said top blade between said blade seat member and said cap member; means including a plurality of exit ports in communication with said channels for passing shaving residue in said channels out of said cartridge; and means for engaging a cartridge holder.
Claim 2
Dependent Claim
219 words
A disposable razor blade cartridge comprising: an elongated blade seat member having an elongated guard surface defining a front surface of said blade seat member, and a pair of spaced bottom blade stop members extending upwardly from said blade seat member; a bottom blade located on said blade seat member with a forward cutting edge abutting the bottom blade stop members, said bottom blade cutting edge being spaced upwardly and rearwardly of said guard surface; an elongated spacer located on Said bottom blade comprising a pair of spaced top blade stop members, and a plurality of forwardly opened channels, each of said top blade stop members abutting a different one of the bottom blade stop members, and said channels extending rearwardly of said bottom blade; a top blade located on said spacer with a forward cutting edge abutting said top blade stop members, said top blade cutting edge being spaced upwardly and rearwardly of said bottom blade cutting edge; a cap member located on said top blade; means for permanently bonding said bottom blade, said spacer and said top blade between said blade seat member and said cap member; means including a plurality of exit ports in communication with said channels for passing shaving residue in said channels out of said cartridge; and means for engaging a cartridge holder.
Claim 3
Dependent Claim
33 words
The cartridge of claim 1 further comprising means on said blade seat member and in abutting engagement with a rear surface of said bottom blade for preventing rearward movement of said bottom blade.
Claim 4
Dependent Claim
31 words
The cartridge of claim 1 further comprising means on said cap member and in abutting engagement a rear surface of said top blade for preventing rearward movement of said top blade.
Claim 5
Dependent Claim
46 words
The cartridge of claim 1 wherein said spacer comprises a plurality of forwardly extending spaced elements forming said channels therebetween, a flange member spaced downwardly and rearwardly of said spaced elements, and a plurality of spaced members for connecting said spaced elements to said flange member.
Claim 6
Dependent Claim
196 words
A disposable razor blade cartridge comprising: a blade seat member having an elongated guard surface defining a front surface of said blade seat member, a first single-cutting edge blade located on said blade seat member with the cutting edge thereof spaced upwardly and rearwardly of said guard surface, an elongated spacer located on said first blade; said spacer comprising a plurality of forwardly extending spaced elements to provide a plurality of forwardly opened channels therebetween, a flange member spaced downwardly and rearwardly of said spaced elements, and a plurality of spaced members connecting said spaced elements to said flange member, a second single-cutting edge blade located on said spaced elements with the cutting edge thereof spaced upwardly and rearwardly of the cutting edge of said first blade, a cap member located on said second blade, means interconnecting said cap member and said blade seat member for permanently bonding said first blade, said spacer and said second blade between said cap member and said blade seat member, means including a plurality of exit ports in communication with said channels for passing shaving residue in said channels out of said cartridge, and means for engaging a cartridge holder.
Claim 7
Dependent Claim
196 words
A disposable razor blade cartridge comprising: a blade seat member having an elongated guard surface defining a front surface of said blade seat member, a first single-cutting edge blade located on said blade seat member with the cutting edge thereof spaced upwardly and rearwardly of said guard surface, an elongated spacer located on said first blade; said spacer comprising a plurality of forwardly extending spaced elements to provide a plurality of forwardly opened channels therebetween, a flange member spaced downwardly and rearwardly of said spaced elements, and a plurality of spaced members connecting said spaced elements to said flange member, a second single-cutting edge blade located on said spaced elements with the cutting edge thereof spaced upwardly and rearwardly of the cutting edge of said first blade, a cap member located on said second blade, means interconnecting said cap member and said blade seat member for permanently bonding said first blade, said spacer and said second blade between said cap member and said blade seat member, means including a plurality of exit ports in communication with said channels for passing shaving residue in said channels out of said cartridge, and means for engaging a cartridge holder.
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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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |