Claims
- 1. In a dry shaver comprising a main shaving unit and at least one trimmer unit mounted in an adjacent relation with said main shaving unit,
- said main shaving unit including a rounded shearing foil and an inner blade assembly driven to move in shearing engagement therewith,
- said trimmer unit including a stationary blade and a movable blade positioned above the stationary blade and which is driven simultaneously with said inner blade assembly to reciprocate along the stationary blade for cutting a long hair, said trimmer unit having its cutting edge directed oppositely from said main shaving unit,
- said stationary and movable blades defining therebetween a cutting plane which is inclined with respect to a tangent plane to the apex of said shearing foil, said stationary blade having a toothed leading end portion bent along an extension line connecting the apex of said shearing foil and the leading edge of said trimmer unit to form thereat a comb-like guide lip for contact with the skin of the user, and said movable blade having its leading edge retreated inwardly from said guide lip, said guide lip being rounded at its extreme end,
- said shaver including a skin guide which is mounted adjacent to said trimmer unit away from said main shaving unit and is adapted to be in contact with the skin of a user for guiding said trimmer unit and said main shaving unit therealong, said skin guide having its contact end located around said extension line such that said contact end of the skin guide, said cutting edge of the trimmer unit, and the apex of said main shaving unit can be simultaneous in contact with the skin for allowing the simultaneous hair shearing and cutting operations by these units.
- 2. A dry shaver as set forth in claim 1, wherein said shearing foil is curved into a part-cylindrical shape to have an axis along which said inner blade assembly is driven to reciprocate, and wherein said trimmer unit has the length of cutting edge substantially equal to the length of said shearing foil along its axis.
- 3. A dry shaver as set forth in claim 1, wherein said extension line crosses at an angle of not more than 10 degrees with the tangent to the apex of said shearing foil.
- 4. A dry shaver as set forth in claim 1, wherein said contact end of the skin guide is lowered from said extension line by a short distance of 0.5 to 2.0 mm.
- 5. A dry shaver as set forth in claim 1, wherein said skin guide includes a round recess the bottom surface of which terminates at its end in said contact end and has a radius of not less than 0.5 mm centered on the cutting edge of the trimmer unit.
- 6. A dry shaver as set forth in claim 1, wherein said trimmer unit includes a support on which the stationary and movable blades are mounted, said support having a flat guard surface which lies nearly along said extension line.
- 7. A dry shaver as set forth in claim 1, wherein said movable blade has a thickness smaller than said stationary blade and is driven to reciprocate on the top surface of said stationary blade.
- 8. A dry shaver as set forth in claim 1, wherein said trimmer unit is vertically movable between a normal position in which the leading edge of the trimmer unit defines with the apex of the shearing foil said extension line and a raised position in which it projects above the apex of the shearing foil.
- 9. A dry shaver as set forth in claim 1, wherein said skin guide is vertically movable between a normal position where the contact end of the skin guide is around said extension line and a lowered position where it is lowered by a greater distance from said extension line.
- 10. A dry shaver as set forth in claim 1, wherein said trimmer unit includes a support on which the stationary and movable blades are mounted, said support being integrally formed with a trimmer drive operatively connecting the trimmer blade to a drive element for said inner blade assembly, said trimmer drive joining said support through a pair of resilient legs so that it is movable relative to the support.
- 11. In a dry shaver comprising a shaving head on which a main shaving unit and a pair of trimmer units are mounted with the trimmer units being disposed on both sides of said main shaving unit in an adjacent relation therewith, said main shaving unit including a rounded shearing foil and an inner blade assembly driven to move in shearing engagement therewith, each of said trimmer units including a stationary blade and a movable blade which is driven simultaneously with said inner blade assembly to reciprocate therealong for cutting a long hair, each trimmer unit having its cutting edge directed oppositely from said main shaving unit, said shaver characterized to include a pair of skin guides each of which is mounted adjacent to the corresponding trimmer unit away from said main shaving unit and is adapted to be in contact with the skin of a user for guiding said trimmer unit and the main shaving unit therealong, each of said skin guides having its contact end located around an extension line connecting the apex of said shearing foil and the leading edge of said trimmer unit such that said contact end of at least one of said skin guides, said cutting edge of at least one of said trimmer units, and the apex of said main shaving unit can be simultaneously brought into contact with the skin for allowing the simultaneous hair shearing and cutting operations by these units.
- 12. A dry shaver as set forth in claim 11, wherein said shearing foil is curved into a part-cylindrical shape to have an axis along which said inner blade assembly is driven to reciprocate, and wherein each of said trimmer units has the length of cutting edge substantially equal to the length of said shearing foil along its axis.
- 13. A dry shaver as set forth in claim 11, wherein said extension line crosses at an angle of not more that 10 degrees with he tangent to the apex of said shearing foil.
- 14. A dry shaver as set forth in claim 11, wherein said contact end of each skin guide is lowered from said extension line by a short distance of 0.5 to 2.0 mm.
- 15. A dry shaver as set forth in claim 11, wherein each of said skin guides includes a round recess the bottom of which terminates at its end in said contact end of the skin guide and has a radius of not less than 0.5 mm centered on the cutting edge of the trimmer unit.
- 16. A dry shaver as set forth in claim 11, wherein each of said trimmer units includes a support on which the stationary and movable blades are mounted, said support having a flat guard surface which lies nearly along said extension line.
- 17. A dry shaver as set forth in claim 11, wherein said stationary and movable blades of each of said trimmer units defines therebetween a cutting plane which is inclined with respect to the tangent plane to the apex of said shearing foil, said stationary blade having its toothed leading end portion bent along said extension line to form thereat a comb-like guide lip for contact with the skin of the user, and said movable blade having its leading edge receded inwardly from said guide lip.
- 18. A dry shaver as set forth in claim 17, wherein said guide lip is rounded at its extreme end.
- 19. A dry shaver as set forth in claim 17, wherein said movable blade has a thickness smaller than said stationary blade and is driven to reciprocate on the top surface of said stationary blade.
- 20. A dry shaver as set forth in claim 11, wherein one of said trimmer units is vertically movable between a normal position in which the leading edge of the trimmer unit defines with the apex of the shearing foil said extension line and a raised position in which it projects above the apex of the shearing foil.
- 21. A dry shaver as set forth in claim 11, wherein one of said skin guides is vertically movable between a normal position where the contact end of the skin guide is around said extension line and a lowered position where it is lowered by a greater distance from said extension line.
- 22. A dry shaver as set forth in claim 11, wherein said trimmer unit includes a support on which the stationary and movable blades are mounted, said support being integrally formed with a trimmer drive operatively connecting the trimmer blade to a drive element for said inner blade assembly, said trimmer drive joining said support through a pair of resilient legs so that it is movable relative to the support.
Priority Claims (1)
Number |
Date |
Country |
Kind |
61-306848 |
Dec 1986 |
JPX |
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Parent Case Info
This application is a continuation, of application Ser. No. 131,679, filed Dec. 11, 1987, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (9)
Number |
Date |
Country |
1051161 |
Feb 1959 |
DEX |
2343116 |
Jan 1975 |
DEX |
2817481 |
Nov 1978 |
DEX |
53-128460 |
Sep 1978 |
JPX |
252844 |
Oct 1948 |
CHX |
602186 |
May 1948 |
GBX |
653508 |
May 1951 |
GBX |
659058 |
Oct 1951 |
GBX |
1550371 |
Aug 1979 |
GBX |
Non-Patent Literature Citations (1)
Entry |
United Kingdom Search Report. |
Continuations (1)
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Number |
Date |
Country |
Parent |
131679 |
Dec 1987 |
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