Patent US4001932A successfully refreshed from Google Patents.
US4001932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary shaver with shear plate rotation preventing means
Assignee: Bissell Inc
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Filing: 1972-11-17
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Granted: 1977-01-11
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Expires: 1992-11-17
Abstract
Abstract A dry rotary shaver has a floating shear plate disposed within a head opening which provides an outer stop, and a rigid stop member which limits inward shear plate movement. The stop member is provided with one or more outwardly extending rigid posts of fixed length which are received within complimentary notches in the wall of the shear plate.
Inventors
- 👤 Wallace D. Herrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:54
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/14; B26B19/145
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
117 words
A dry shaver comprising: a. a shaver housing including a shaving head having at least one opening therein, b. a shear plate disposed within said opening and adapted for tilting relative thereto and with the edge of said opening forming a fixed outer stop therefor, said shear plate including a cylindrical wall, c. a floating rotary cutting element disposed within said shear plate and tiltably supporting the latter, d. a rigid fixed inner shear plate stop member removably secured in said head, e. and cooperative interlocking means on said shear plate and on said fixed stop member to prevent shear plate rotation at any tilted position thereof during rotation of said cutting member, said interlocking means comprising:
Claim 2
Dependent Claim
117 words
A dry shaver comprising: a. a shaver housing including a shaving head having at least one opening therein, b. a shear plate disposed within said opening and adapted for tilting relative thereto and with the edge of said opening forming a fixed outer stop therefor, said shear plate including a cylindrical wall, c. a floating rotary cutting element disposed within said shear plate and tiltably supporting the latter, d. a rigid fixed inner shear plate stop member removably secured in said head, e. and cooperative interlocking means on said shear plate and on said fixed stop member to prevent shear plate rotation at any tilted position thereof during rotation of said cutting member, said interlocking means comprising:
Claim 3
Dependent Claim
96 words
recess means comprising at least one notch formed in said cylindrical wall, 2. and a fixed projection formed in said rigid stop member and disposed within said notch, said fixed projection comprising a post of fixed length disposed within said notch throughout the full range of floating shear plate positions, f. said stop member including an inner transverse planular portion from which said post extends, g. the length of said post being such that said shear plate will, upon inward floating movement, engage said inner transverse planular portion before said post can bottom within said notch.
Claim 4
Dependent Claim
96 words
recess means comprising at least one notch formed in said cylindrical wall, 2. and a fixed projection formed in said rigid stop member and disposed within said notch, said fixed projection comprising a post of fixed length disposed within said notch throughout the full range of floating shear plate positions, f. said stop member including an inner transverse planular portion from which said post extends, g. the length of said post being such that said shear plate will, upon inward floating movement, engage said inner transverse planular portion before said post can bottom within said notch.
Claim 5
Dependent Claim
214 words
A dry shaver comprising: a. a shaver housing including a shaving head having at least one opening therein, b. a shear plate disposed within said opening and adapted for tilting relative thereto and with the edge of said opening forming a fixed outer stop therefor, said shear plate including a cylindrical wall, c. a floating rotary cutting element disposed within said shear plate and tiltably supporting the latter, d. a rigid fixed inner shear plate stop member removably secured in said head, e. and cooperative interlocking means on said shear plate and on said fixed stop member to prevent shear plate rotation at any tilted position thereof during rotation of said cutting member, said interlocking means comprising: 1. recess means comprising at least one notch formed in said cylindrical wall, 2. and a fixed projection formed in said rigid stop member and disposed within said notch, said fixed projection comprising a post of fixed length disposed within said notch throughout the full range of floating shear plate positions, f. said stop member including an inner transverse planular portion from which said post extends, g. the length of said post being such that, upon inward floating shear plate movement, said post will bottom within said notch and constitute the inner stop for said shear plate.
Claim 6
Dependent Claim
214 words
A dry shaver comprising: a. a shaver housing including a shaving head having at least one opening therein, b. a shear plate disposed within said opening and adapted for tilting relative thereto and with the edge of said opening forming a fixed outer stop therefor, said shear plate including a cylindrical wall, c. a floating rotary cutting element disposed within said shear plate and tiltably supporting the latter, d. a rigid fixed inner shear plate stop member removably secured in said head, e. and cooperative interlocking means on said shear plate and on said fixed stop member to prevent shear plate rotation at any tilted position thereof during rotation of said cutting member, said interlocking means comprising: 1. recess means comprising at least one notch formed in said cylindrical wall, 2. and a fixed projection formed in said rigid stop member and disposed within said notch, said fixed projection comprising a post of fixed length disposed within said notch throughout the full range of floating shear plate positions, f. said stop member including an inner transverse planular portion from which said post extends, g. the length of said post being such that, upon inward floating shear plate movement, said post will bottom within said notch and constitute the inner stop for said shear plate.
Claim 7
Dependent Claim
130 words
A dry shaver comprising: a. a shaver housing including a shaving head having at least one opening therein, b. a shear plate disposed within said opening and adapted for tilting relative thereto and with the edge of said opening forming a fixed outer stop therfor, said shear plate including a cylindrical wall, c. a floating rotary cutting element disposed within said shear plate and tiltably supporting the latter, d. a rigid fixed inner shear plate stop member removably secured in said head, e. and cooperative interlocking means on said shear plate and on said fixed stop member to prevent shear plate rotation at any tilted position thereof during rotation of said cutting member, said interlocking means comprising: 1. recess means comprising at least one notch formed in said cylindrical wall,
Claim 8
Dependent Claim
130 words
A dry shaver comprising: a. a shaver housing including a shaving head having at least one opening therein, b. a shear plate disposed within said opening and adapted for tilting relative thereto and with the edge of said opening forming a fixed outer stop therfor, said shear plate including a cylindrical wall, c. a floating rotary cutting element disposed within said shear plate and tiltably supporting the latter, d. a rigid fixed inner shear plate stop member removably secured in said head, e. and cooperative interlocking means on said shear plate and on said fixed stop member to prevent shear plate rotation at any tilted position thereof during rotation of said cutting member, said interlocking means comprising: 1. recess means comprising at least one notch formed in said cylindrical wall,
Claim 9
Dependent Claim
65 words
and a fixed projection formed in said rigid stop member and disposed within said notch, said fixed projection comprising a post of fixed length disposed within said notch throughout the full range of floating shear plate positions, f. said stop member including an inner transverse planular portion comprising inner and outer concentric rings which are joined together, g. said post extending from said outer ring.
Claim 10
Dependent Claim
65 words
and a fixed projection formed in said rigid stop member and disposed within said notch, said fixed projection comprising a post of fixed length disposed within said notch throughout the full range of floating shear plate positions, f. said stop member including an inner transverse planular portion comprising inner and outer concentric rings which are joined together, g. said post extending from said outer ring.
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) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |