US3844033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary shaver with interlocking means to prevent shear plate rotation
Assignee: Bissell Inc
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Filing: 1972-11-17
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Granted: 1974-10-29
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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 ripid stop member which limits inward shear plate movement. The shear plate is provided with a projection which extends longitudinally into an opening in the stop member. The inner stop member opening is provided with a radially inwardly extending projection which cooperatively engages with the longitudinal projection to hold the shear plate against rotation.
Inventors
- 👤 R Yonkers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:54
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/14; B26B19/145
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
157 words
A dry shaver comprising: a. a shaver housing including a shaving head having at least one circular opening therein, b. a shear plate which effectively comprises: 1. a thin-walled first member having an outer shaving face which merges into a cylindrical wall which loosely fits within said head opening for tilting relative thereto, and with said first member having a peripheral flange disposed beneath said head opening, 2. and a second member telescopingly assembled within said cylindrical wall, c. a floating rotary cutting member disposed within said shear plate and tiltably supporting the latter, d. a rigid fixed inner shear plate stop member having an opening with at least one radially extending projection, with said stop member opening being in alignment with said head, e. and projection means extending longitudinally from said second member into said stop member opening and adapted to engage said radial projection to limit shear plate rotation during rotation of said cutting member.
Claim 2
Dependent Claim
157 words
A dry shaver comprising: a. a shaver housing including a shaving head having at least one circular opening therein, b. a shear plate which effectively comprises: 1. a thin-walled first member having an outer shaving face which merges into a cylindrical wall which loosely fits within said head opening for tilting relative thereto, and with said first member having a peripheral flange disposed beneath said head opening, 2. and a second member telescopingly assembled within said cylindrical wall, c. a floating rotary cutting member disposed within said shear plate and tiltably supporting the latter, d. a rigid fixed inner shear plate stop member having an opening with at least one radially extending projection, with said stop member opening being in alignment with said head, e. and projection means extending longitudinally from said second member into said stop member opening and adapted to engage said radial projection to limit shear plate rotation during rotation of said cutting member.
Claim 3
Dependent Claim
89 words
and a second member telescopingly assembled within said cylindrical wall, c. a floating rotary cutting member disposed within said shear plate and tiltably supporting the latter, d. a rigid fixed inner shear plate stop member having an opening with at least one radially extending projection, with said stop member opening being in alignment with said head, e. and projection means extending longitudinally from said second member into said stop member opening and adapted to engage said radial projection to limit shear plate rotation during rotation of said cutting member.
Claim 4
Dependent Claim
89 words
and a second member telescopingly assembled within said cylindrical wall, c. a floating rotary cutting member disposed within said shear plate and tiltably supporting the latter, d. a rigid fixed inner shear plate stop member having an opening with at least one radially extending projection, with said stop member opening being in alignment with said head, e. and projection means extending longitudinally from said second member into said stop member opening and adapted to engage said radial projection to limit shear plate rotation during rotation of said cutting member.
Claim 5
Dependent Claim
30 words
The shaver of claim 1 in which: a. said second member includes a radially outwardly extending flange, b. and said projection means extends longitudinally inwardly from adjacent said radial flange.
Claim 6
Dependent Claim
28 words
The shaver of claim 2 in which said projection means comprises a plurality of closely spaced circumferentially disposed projection members forming recesses therebetween for receiving said radial projection.
Claim 7
Dependent Claim
26 words
In the shaver of claim 3: an annular skirt extending longitudinally from said radial flange and disposed inwardly of said projection members to support the latter.
Claim 8
Dependent Claim
24 words
The shaver of claim 8 which includes means on said second member for supporting the said peripheral flange of said first member against damage.
Claim 9
Dependent Claim
27 words
The shaver of claim 5 in which said supporting means comprises a radially outwardly extending annular flange on said second member and forming a supporting shoulder therewith.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |