Coating implements with material supply – Including means to apply material-moving force – Piston-provided reservoir
Patent
1999-11-09
2000-12-05
Eloshway, Charles R.
Coating implements with material supply
Including means to apply material-moving force
Piston-provided reservoir
401174, B43K 506
Patent
active
061557358
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a liquid feed applicator which incorporates a liquid paint such as liquid lip coloring etc., and can appropriately supply it to an application element.
BACKGROUND ART
Conventionally, examples of liquid applicators of this kind include those shown in FIGS. 26 and 27 and in FIG. 28.
In FIGS. 26 and 27, a main body 31 has an application element 32 at its front end and a rotary actuator 33 inserted into its rear opening. Rotary actuator 33 is configured of an outer cylindrical part 34 and an inner cylindrical part 35 inserted therein so as to be unrotatable. Outer cylindrical part 34 has a fitting projection 34a, which is mated with a fitting recess 31a in main body 31 so that outer cylindrical part 34 is able to rotate and will not fall off with respect to main body 31.
A screw rod 37 is inserted inside inner cylindrical part 35. A male thread 37a formed on the outer periphery of screw rod 37 is mated with a female thread 35a formed at the front end of inner cylindrical part 35 and fitted through an extraordinarily shaped fitting hole 31c in a partition wall 31b formed on the inner surface of main body 31. By this arrangement, screw rod 37 can move in the longitudinal direction but is not rotatable with respect to inner cylindrical part 35. Formed at the front end of outer cylindrical part 34 is a pawl 39 which resiliently engages ratchet teeth 38 formed on the inner surface of main body 31. This pawl 39 and ratchet teeth 38 constitute a ratchet mechanism 40. A piston 41 is inserted so as to move slidably with respect to the inner surface of main body 31 and is joined to the front end of screw rod 37, in front of partition wall 31b.
In the thus configured liquid applicator, outer cylindrical part 34 is adapted to be rotatable in only one direction with respect to main body 31, being limited by ratchet mechanism 40. As outer cylindrical part 34 is turned relative to main body 31, inner cylindrical part 35 rotates together with outer cylindrical part 34. Upon this, screw rod 37 is prohibited from rotating by fitting hole 31c, so that screw rod 37 and rotary actuator 33 rotate relatively from each other. Therefore, screw rod 37 moves forwards by virtue of its screw fitting with female thread 35a to thereby move piston 41 forwards.
As a result, an application liquid L stored in an application liquid reservoir 31A of main body 31 is pushed out by piston 41 so as to infiltrate the liquid into application element 32.
An applicator shown in FIG. 28 has an application element 52 at the front end of a cylindrical main body 51 while a piston 53 and pressing cylinder 54 are inserted into main body 51 from its rear end. Ribs 54a formed on the peripheral surface of pressing cylinder 54 are fitted in grooves 51a formed on the inner surface of main body 51 along its longitudinal direction so that they can move. Therefore, pressing cylinder 54 can move in the longitudinal direction relative to main body 51 with its rotation being prohibited. A cylindrical rotary actuator 55 is inserted at the rear end of main body 51. Rotary actuator 55 has an annular fitting projection 55a formed on the peripheral surface thereof, and this fits into annular fitting recess 51b formed on the inner surface of main body 51. This configuration permits rotary actuator 55 to slide and rotate relative to main body 51 and prevents it from being pulled out. Further, a rear portion 56b of a screw rod 56 having a male thread 56a formed thereon is inserted into rotary actuator 55 so that it cannot rotate. The part of screw rod 56 in front of rotary actuator 55 fits and engages a female thread 54b formed on the inner surface of pressing cylinder 54 so that it is inserted in pressing cylinder 54. Rotary actuator 55 has ratchet teeth 55b which engage ratchet groove 51c formed on the inner surface of main body 51. The engagement between ratchet teeth 55b and ratchet groove 51c constitutes a ratchet mechanism 57 for limiting the rotation of rotary actuator 55 to one direction.
In the thus configured applica
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deVore Peter
Eloshway Charles R.
Mitsubishi Pencil Kabushiki Kaisha
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