Ink refillable stamp

An ink-refillable stamp includes a knob, fixed seat, a moving seat movably connected to the fixed seat, a stamping set securely inserted in the fixing seat and a bottom cover. The stamping set consists of an upper frame and a lower frame combined together. At least one ink-spongy pad and a stamping face are housed in the stamping set. At least one partition strip can be provided in the stamping set to separate the inner space into at least two rooms for filling with ink-spongy pads and inks of different colors therein. A plurality of apertures is defined in the upper frame to let ink to be supplied therefrom. When the ink stored in the stamp is exhausted, the stamp can be cleanly and conveniently refilled by a new ink cartridge wherefrom ink flows through the apertures into the stamping set.

BACKGROUND OF THE INVENTION 
1. Field of the Invention 
The present invention relates to an improved ink-refillable stamp, wherein 
an inner space for storing ink therein can be partitioned into at least 
two rooms to be filled with respective ink supplies of different colors. 
2. Description of Related Art 
There are various ink stamps, such as logo stamps, document delivery 
stamps, C.O.D. stamps, etc. which are commonly used in offices. 
As shown in FIG. 10, a conventional ink-refillable stamp comprises a moving 
seat (80), a top cap (81), a fixing seat (82), a spring (83) and an inner 
stamping set (84). 
The moving seat (80) and the fixing seat (82) are correspondingly formed in 
an inverted U shape. The fixing seat (82) thereon integrally forms an 
upright slide post extended through the moving seat (80) and securely 
fixed by the top cap (81) on the top thereof. The fixing seat (82) is 
received in the moving seat (80) with the spring (83) provided around the 
slide post of the fixing seat (82) and compressed between the top cap (81) 
and the moving seat (80), whereby the moving seat (80) is movably 
connected with the fixing seat (82). 
The inner stamping set (84) includes an upper frame (85) and a lower frame 
(86), which are combined together and securely inserted in the inner space 
of the fixing seat (82). The upper frame (85) defines a plurality of slots 
(851) therein with an ink spongy pad (852) housed therein. The lower frame 
(86) defines a plurality of recesses (861) to fix stamping types (87) 
therein, and a peripheral recess (862) to fix border blocks (88) therein. 
The stamping types (87) and border blocks (88) can be easily replaced, and 
ink can be refilled via the slots (851) into the stamping set (84) after 
drawing it out of the fixing seat (82). The ink spreads in the ink spongy 
pad (852) on the stamping face. 
However, the above ink-refillable stamp has the following defects: 
1. when a user is adding ink into the stamp, it is difficult to avoid 
inking hands of a user; and the quantity of ink refilling is not 
well-controllable; 
2. the ink can not spread evenly in the stamp, so that the quality of 
imprints is restricted; 
3. the ink stamp can be supplied with ink of only one color. 
Other information concerning the application is, for example, the U.S. Pat. 
No. 5,048,415 filed by the inventor of the present invention on May 30, 
1990. 
Therefore, it is an objective of the invention to provide an improved 
ink-refillable stamp to mitigate and/or obviate the aforementioned 
problems. 
SUMMARY OF THE INVENTION 
An improved ink-refillable stamp includes a knob, a fixed seat, a moving 
seat movably connected to the fixed seat, a stamping set and a bottom 
cover. The stamping set consists of an upper frame and a lower frame, 
which are combined together and detachably inserted in the fixing seat. At 
least one ink-spongy pad and a stamping face are housed in the stamping 
set. At least one partition strip can be provided in the upper frame to 
separate the inner space into at least two rooms for filling with 
ink-spongy pads and ink of different colors therein. A plurality of 
apertures is defined in the upper frame to let ink be refilled therefrom. 
When the ink stored in the stamp is exhausted, the stamp can be cleanly 
and conveniently refilled by a new ink cartridge whereby ink flows from 
the apertures into the stamping set. 
Other objects, advantages and novel features of the invention will become 
more apparent from the following detailed description when taken in 
conjunction with the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
As shown in FIGS. 1 and 2, the present invention relates to an improved 
ink-refillable stamp comprising a knob (20) with a detachable top cap (10) 
covered thereon, a moving seat (30) movably connected with a fixing seat 
(40) and a stamping set (50) detachably inserted in the fixing seat (40). 
The top cap (10) has a flat (11) formed at one side and a lip (12) around 
the bottom periphery thereof. The knob (20) forms an extended flat plate 
(21) at one side corresponding to the flat (11) and a bulged edge (22) 
around the top periphery thereof corresponding to the lip (12) of the top 
cap (10). The top cap (10) is secured on the knob (20) by respective 
mating between the flat (11) and the flat plate (21), and the lip (12) and 
the bulged edge (22). The center of the knob (20) forms a central joint 
portion (23), which defines a passage therein. An upper portion of the 
passage is defined as a circular passage (231) and a lower portion thereof 
is defined as a polygonal passage (24). 
The moving seat (30) is formed in an inverted U shape with two opposite 
side walls and a top surface extending therebetween, with an upright tube 
guide (31) formed on the top surface thereof and two positioning posts 
(32) formed on the bottom surface thereof. 
The fixing seat (40) is also formed in an inverted U shape adapted to being 
fitted in the inner space of the moving seat (30). An upright slide post 
(41) is formed on the top surface of the fixing seat (40) and corresponds 
to the tube guide (31). Two positioning holes (43) corresponding to the 
positioning posts (32) are defined in the top surface of the fixing seat 
(40). A top end portion of the slide post (41) forms a circular portion 
and a polygonal portion (411) corresponding to the circular passage (231) 
and polygonal passage (24) of the knob (20). The fixing seat (40) is 
received in the inner space of the moving seat (30), with the top end of 
the slide post (41) extended through the tube guide (31) of the moving 
seat (30), and the positioning posts (32) of the moving seat (30) 
respectively extended through the positioning holes (43) of the fixing 
seat (40). The slide post (41) further extends through the passage of the 
knob (20) with the polygonal portion (411) fitted in the polygonal passage 
(24), and is fixed with a fastening cap (42) on the top end thereof, 
whereby a rotation of the knob (20) is prevented. A spring (26) is 
provided around the slide post (41) and compressed between the bottom 
surface (25) of the joint portion (23) and the top face of the tube guide 
(31) of the moving seat (30), whereby the moving seat (30) is movably 
connected with the fixing seat (40). A pair of slideways (44) is 
integrally formed on the inner surfaces of the opposite side-walls of the 
fixing seat (40), each slideway has a ridge (441) formed thereon. 
The stamping set (50) includes an upper frame (51) and a lower frame (60), 
combined together. At least one ink-spongy pad (70) and a stamping face 
(71) are housed in the upper frame (51). 
The upper frame (51) forms a pair of flanges (52) at opposite sides near 
the top end thereof to be slidable along the corresponding slideway (44). 
Each of the flanges (52) defines a recess (53) therein corresponding to 
the ridge (441) of the slideway (44), whereby, when the stamping set (50) 
is inserted into the fixing seat (40), the ridges (441) are respectively 
inserted into the corresponding recesses (53) to fix the stamping set (50) 
with the fixing seat (40). 
As seen in FIGS. 3 and 4, two embodiments according the present invention 
have a group of apertures (54) defined in the upper frame (51), which is 
arranged in two rows with three or four of the equal spaced apertures (54) 
in one row. Each aperture (54) forms an up extending spike (55) on a 
central joint portion thereof. 
As clearly shown in FIG. 2, the inner bottom face of the upper frame (51) 
forms a plurality of equal spaced contacting pins (57) extending downward 
to press the ink spongy pad (70) against the stamping face (71). 
A plurality of equal spaced positioning eyes (58) is defined in the bottom 
of the peripheral walls of the upper frame (51). Opposite walls of 
front/back and right/left sides of the upper frame (51) respectively 
define a groove (59) in the center thereof. 
The lower frame (60) has peripheral walls with an opening (61) defined 
thereamong to expose the stamping face (71) therefrom. 
A plurality of equal spaced positioning pins (62) is formed on the top face 
of the peripheral wall of the lower frame (60) and extends upward 
corresponding to the positioning eyes (58) of the upper frame (51). After 
the ink-spongy pad (70) and the stamping face (71) are housed in the upper 
frame, the lower frame (60) is fixed on the bottom of the upper frame (51) 
with the positioning pins (62) respectively extended through corresponding 
eyes (711) of the stamping face (71) and fixedly inserted in the 
corresponding positioning eyes (58) of the upper frame (51). The 
peripheral wall of the lower frame (60) further has stop ridges (63) 
integrally formed thereon corresponding to recesses (591) defined in the 
peripheral walls of the upper frame (51). Therefore, the lower frame (60) 
is securely combined with the upper frame (51) to secure the ink-spongy 
pad (70) and stamping face (71) therebetween. 
A bottom cover (64) is adapted to cover the bottom of the moving seat (30) 
to protect the stamping face (71). 
Referring to the FIG. 6, a first partition strip (72) is transversally 
arranged in the upper frame (51) with opposite ends thereof respectively 
inserted in a relative one of the grooves (59). The first partition strip 
(72) separates the inner space of the upper frame (51) into two rooms, 
which are provided by relative ink-spongy pads (70) and filled with 
respective different color inks. 
In FIG. 7, a second partition strip (73) is longitudinally arranged in the 
upper frame (51). A cross partition (74) as seen in FIG. 8 is provided in 
the upper frame (51) to separate the inner space of the stamping set (50) 
into four areas. Therefore, the practicability of the present invention is 
increased. 
As seen in FIG. 9, when the ink stored in the stamp is exhausted, the 
stamping set (50) can be drawn out of the fixing seat (40). Then, an ink 
cartridge (75) introduced by the manufacturer of the stamp can be used to 
refill the stamping set (50). When the ink cartridge (75) is inserted in 
the respective aperture (54), the spike (55) penetrates through a seal 
(751) on the bottom of the ink cartridge (75) to allow ink to spread about 
in the space among the contacting pins (57). Thus, the ink evenly spreads 
on the stamping face (71). 
From the above description, it is noted that the invention has the 
following advantages: 
1. the ink-refillable stamp can be conveniently and cleanly refilled, the 
easy steps include drawing the stamping set (50) out of the fixing seat 
(40), supplying ink via the apertures (54) of the upper frame (51) of the 
stamping set (50) by the ink cartridges introduced by the manufacturer, 
whereby inking of a user's fingers is avoided and the quantity of 
refilling is controllable; 
2. the stamping face (71) is securely positioned compared with the 
conventional art, and the ink can be evenly dispersed on the stamping face 
(71), so that the print quality of the ink stamp is increased; 
3. the slide post (41) of the fixing seat (40) has the polygonal portion 
(411) engaged with the corresponding polygonal passage (24) defined in the 
knob (20), so that rotation of the knob (20) is prevented. 
4. the partition strips (72) separating the stamping face (71) into rooms 
to be filled with inks of respective colors increases the practicability 
of the ink stamp. 
It is to be understood, however, that even though numerous characteristics 
and advantages of the present invention have been set forth in the 
foregoing description, together with details of the structure and function 
of the invention, the disclosure is illustrative only, and changes may be 
made in detail, especially in matters of shape, size, and arrangement of 
parts within the principles of the invention to the full extent indicated 
by the broad general meaning of the terms in which the appended claims are 
expressed.