US3858314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive assembly for an electric shaver
Assignee: Philips North America LLC
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Filing: 1973-06-20
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Granted: 1975-01-07
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Expires: 1993-06-20
Abstract
Abstract A drive assembly for an electric razor of the type having a motor and a reciprocatively driven blade assembly comprises an actuator member mechanically coupled to the blade assembly. An eccentric drive cam rotatably driven by the motor engages a drive slot provided in the actuator member to reciprocatively drive the actuator member and the blade assembly. Relief slots are provided in the actuator member on either side of the drive slot to render the walls of the drive slot flexible to accommodate dimensional variations in the drive slot or drive cam resulting from wear or normal production tolerances in these elements.
Inventors
- 👤 J Edward Brenneman
- 👤 Robert S Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:10
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/28; B26B19/02; B26B19/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
125 words
In an electric shaver of the type having a motor and a reciprocatively driven cutter blade assembly, a drive arrangement for said assembly comprising, in combination: a slidably-mounted actuator member mechanically coupled to said cutter blade assembly, said actuator member having an elongated drive recess; means comprising at least one relief recess in said actuator member adjacent said drive recess for rendering at least one side wall of said drive recess flexible; and means comprising an eccentric drive cam operatively engaged to said drive recess for reciprocatively driving said actuator member, the diameter of said cam being greater than the width of said drive recess when the side walls of said recess are not flexed to compensate for undesirable size variations in said drive recess.
Claim 2
Dependent Claim
125 words
In an electric shaver of the type having a motor and a reciprocatively driven cutter blade assembly, a drive arrangement for said assembly comprising, in combination: a slidably-mounted actuator member mechanically coupled to said cutter blade assembly, said actuator member having an elongated drive recess; means comprising at least one relief recess in said actuator member adjacent said drive recess for rendering at least one side wall of said drive recess flexible; and means comprising an eccentric drive cam operatively engaged to said drive recess for reciprocatively driving said actuator member, the diameter of said cam being greater than the width of said drive recess when the side walls of said recess are not flexed to compensate for undesirable size variations in said drive recess.
Claim 3
Dependent Claim
29 words
An electric shaver as defined in claim 1 wherein said relief recess comprises a slot adjacent the side walls of said drive recess for rendering said side walls flexible.
Claim 4
Dependent Claim
23 words
An electric shaver as defined in claim 2 wherein said drive recess and said relief recess comprise slots extenDing through said actuator member.
Claim 5
Dependent Claim
122 words
In an electric shaver of the type having a motor and a reciprocatively-driven cutter blade assembly, a drive arrangement for said assembly comprising, in combination: a slidably-mounted actuator member mechanically coupled to said cutter blade assembly and having an elongated drive slot; means comprising a pair of relief slots in said actuator member adjacent respective sides of said drive slot for rendering the side walls of said drive slot flexible; and means comprising an eccentric drive cam operatively engaged to said drive slot for reciprocatively driving said actuator member, the diameter of said cam being greater than the width of said drive recess when the side walls of said recess are not flexed to compensate for undesirable size variations in said recess.
Claim 6
Dependent Claim
122 words
In an electric shaver of the type having a motor and a reciprocatively-driven cutter blade assembly, a drive arrangement for said assembly comprising, in combination: a slidably-mounted actuator member mechanically coupled to said cutter blade assembly and having an elongated drive slot; means comprising a pair of relief slots in said actuator member adjacent respective sides of said drive slot for rendering the side walls of said drive slot flexible; and means comprising an eccentric drive cam operatively engaged to said drive slot for reciprocatively driving said actuator member, the diameter of said cam being greater than the width of said drive recess when the side walls of said recess are not flexed to compensate for undesirable size variations in said recess.
Claim 7
Dependent Claim
128 words
In an appliance of the type having a motor and a reciprocatively driven working member, a drive arrangement for said working member comprising, in combination: a slidably-mounted actuator member mechanically coupled to said working member and having an elongated drive recess; means comprising at least one relief recess in said actuator member adjacent said drive recess for rendering at least one side wall of said drive recess flexible to compensate for said size variations in said drive recess; and means comprising an eccentric drive cam operatively engaged to said drive recess for reciprocatively driving said actuator member, the diameter of said cam being greater than the width of said drive recess when said side walls are not flexed to compensate for undesirable size variations in said drive recess.
Claim 8
Dependent Claim
128 words
In an appliance of the type having a motor and a reciprocatively driven working member, a drive arrangement for said working member comprising, in combination: a slidably-mounted actuator member mechanically coupled to said working member and having an elongated drive recess; means comprising at least one relief recess in said actuator member adjacent said drive recess for rendering at least one side wall of said drive recess flexible to compensate for said size variations in said drive recess; and means comprising an eccentric drive cam operatively engaged to said drive recess for reciprocatively driving said actuator member, the diameter of said cam being greater than the width of said drive recess when said side walls are not flexed to compensate for undesirable size variations in said drive recess.
Claim 9
Dependent Claim
46 words
An appliance as defined in claim 5 wherein said recesses are slots, and wherein two relief slots are provided on either side of said drive slot for rendering the side walls of said drive slot flexible to compensate for said size variations in said drive slot.
References Cited (Backward Citations)
US2130311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |