Shaving apparatus

Abstract: A shaving apparatus comprising a foil (3) having hair entrance apertures (4) and a shaving member (5) which can be driven with respect to the foil (3), which apparatus comprises a foil holder (2) having supporting parts (6) corresponding to the shape of the foil (3). The foil sholder (2) comprises at least one adjustable connection member (7) for the foil (3).

Description: The invention relates to a shaving apparatus comprising a foil having hair entrance apertures and a shaving member which can be driven with respect to the foil, the apparatus comprises a foil holder having supporting members corresponding to the shape of the foil, the apparatus comprising at least one connection member to put the foil under pressure against the supporting members. Such a shaving apparatus is known from US-A-4 134 202. In this apparatus attachment means are provided to attach reinforcing edge portions of the foil to the foil holder. The attachment means include a resilient rod for applying tension to the foil to hold the foil rigidly against support parts of the foil holder. The construction comprises many parts, is difficult in operation and its manufacturing cost is high. It is an object of the invention to improve a shaving apparatus of the type described hereinbefore. The shaving apparatus according to the invention is characterized in that the connection member is formed by an adjustable cam which is rotatably mounted in the foil holder and having an eccentric part cooperating with an edge of the foil. This construction gives a very simple solution for mounting the foil in the foil holder and to put the foil under pressure and is very easy to operate. Special embodiments are recorded in the dependent claims. The invention will now be described in greater detail with reference to a description of a few embodiments shown in the figures. Fig. 1 is a perspective view of a shaving apparatus in which the foil holder with the foil has been disassembled. Fig. 2 is a diagrammatic longitudinal sectional view of the foil with the foil holder. Fig. 3 is a cross-sectional view taken on the line III-III of fig. 2. Fig. 4 is a longitudinal sectional view partly as an elevation of the foil and foil holder of another embodiment. Fig. 5 is a cross-sectional view taken on the line V-V in Fig. 4. Fig. 6 is a cross-sectional view on an enlarged scale taken on the line VI-VI in Fig. 4. Description of preferred embodiments The shaving apparatus of Fig. 1 comprises a housing 1 and a detachable foil holder 2 comprising a foil 3 having air entrance apertures 4. A shaving member 5 can be driven in known manner so as to reciprocate with respect to the foil 3 in the direction of the arrows P. As is shown in Figs. 2 and 3 the foil holder 2 comprises supporting parts which correspond to the curved shape of the foil 3 and which are formed by the projecting edge portions 6 of the foil holder. On one side of the foil holder 2 the foil 3 is supported by two adjustable connection means 7 and on the other side it is supported by two oppositely located hook-like cams 8. The edges of the foil 3 are provided with reinforcing edges 9. An adjustable connection means is constructed as a rotatable cam 7 having a circular flange 10 and a first cylindrical part 11 which is coaxial therewith and which is situated in an aperture 12 of the foil holder 2. The cylindrical part 11 comprises hook-like ends 13 which engage behind the wall part 14 of the foil holder 2. As a result of the incision 15 in the cylindrical part 11 the hook-like ends can deviate elastically so that assembly and disassembly of the rotatable cams 7 becomes possible. A second cylindrical part 16 which is situated eccentrically with respect to the first cylindrical part 11 is present between the flange 10 and the first cylindrical part 11. The foil 3 bears with a reinforcing edge 9 against the second eccentric cylindrical parts 16 of the cams 7. Any play between the cams 7 and 8 and the foil 3 may be removed by rotating the cams 7 and forces may also be exerted on the foil so that it is tensioned in the holder 2. The foil 3 then engages the edge parts 6 with a pressure Q as a result of which the curved shape of the foil corresponds exactly to the shape of the said edge parts and which shape is chosen optimally, for example, for the operation of the apparatus. Because the foil 3 engages the foil holder 2 with a pressure Q the foil will be urged away from the holder less rapidly during shaving so that the occurrence of play between foil 3 and shaving member 5 and hence a deterioration of the shaving action is avoided. Figs. 4, 5 and 6 show an embodiment in which the foil 3 is situated on the outside of the foil holder 2. The foil 3 is drawn over the edge parts 18 by means of the rotatable cams 17 which are constructed entirely in accordance with the cams 7 of the embodiment shown in Figs. 1 to 3. The reinforcing edge 19 of the foil 3 comprises resilient elements in the form of elastic arms 20 having apertures 21 in which the eccentric cylindrical parts 22 of the cams 17 are situated.

Claims: A shaving apparatus comprising a foil (3) having hair entrance apertures (4) and a shaving member (5) which can be driven with respect to the foil, which apparatus comprises a foil holder (2) having supporting members (6) corresponding to the shape of the foil, the apparatus comprising at least one connection member (7,17) to put the foil under pressure against the supporting members (6), characterized in that the connection member (7,17) is formed by an adjustable cam which is rotatably mounted in the foil holder (2) and having an eccentric part (16,22) cooperating with an edge (9,19) of the foil (3). A shaving apparatus as claimed in claim 1, characterized in that the foil (3) is also connected to the holder (2) by means of a resilient element (20). A shaving apparatus as claimed in claim 2, characterized in that the resilient element (20) forms part of the reinforcement edge (19) of the foil (3).

Inventors: WIJMA WILLEM SJOUKE, WIJMA, WILLEM SJOUKE
Applicants: PHILIPS NV, N.V. PHILIPS' GLOEILAMPENFABRIEKEN
Application year: 1990
Main classification: B26B19
IPC codes: B26B19