Interchangeable shoe and slipper combination

An interchangeable shoe and slipper combination includes an upper having a front upper portion secured on a sole and a rear upper portion. A slide fastener couples or uncouples the front upper portion and the rear upper portion so as to assemble a shoe, or form a slipper by separating the rear upper portion from the front upper portion. A detachable heel is fixed under the sole, which includes several heel sections selectively fixed under the sole for adjusting the heel height of the shoe.

BACKGROUND OF THE INVENTION 
Conventional shoes are usually made as a fixed type so that an additional 
slipper must be provided as comfortable home wearing footwear thereby 
causing inconvenience for the wearer. 
Meanwhile, such conventional shoes are formed with a fixed heel secured 
under a sole and lack the convenience of adjusting the height of such a 
fixed-type heel, thereby making it impossible to adjust the heel height 
according to the wearer's choice. 
The present inventor has identified such a problem and invented the present 
interchangeable shoe and slipper combination with adjustable heel height. 
SUMMARY OF THE INVENTION 
One object of the present invention is to provide a combination of a shoe 
and a slipper interchangeably assembled or disassembled to become either a 
shoe or a slipper for convenient dual purposes for its wearer. 
The other object of the present invention is to provide a shoe having a 
plurality of heel sections which can be optionally adjustably mounted 
under the shoe sole for the user's convenient choice of a heel height.

DETAILED DESCRIPTION 
As shown in FIG. 2, the present invention comprises: an upper 1; a sole 2; 
a detachable heel means including a first-section heel 3, a second-section 
heel 4 and a third-section heel 5 superimposedly secured under the sole 2, 
and a separable slide fastener 6 coupling or uncoupling the upper 1 and 
the sole 2. The slide fastener 6 includes a lower strip 61 formed on an 
upper perimeter of the sole 2, an upper strip 62 formed on a lower 
perimeter of the upper 2 and a coupler 63 operatively coupling or 
uncoupling the upper 1 and the sole 2, so that the upper 1 can be 
disassembled from the sole 2 for replacing a new upper 1, so as to be more 
convenient than a conventional fixed-type shoe as shown in FIG. 1. 
The detachable heel means includes a first-section heel 3 formed under the 
sole 2 having a screw hole 31 formed thereunder, a second-section heel 4 
having a screw portion 41 formed on its top portion adapted to engage with 
the screw hole 31 of the first-section heel 3 and a screw hole 42 formed 
on its bottom portion, and a third-section heel 5 having a screw portion 
51 formed on its top portion adapted to engage with the screw hole 42 of 
the second-section heel 4. For adjusting the heel height, the second and 
third-section heels 4, 5 can be all disassembled from the first-section 
heel 3 to form the lowest height of the present invention. By 
superimposing all heels 4, 5 under the first-section heel 3, the maximum 
height for the present invention is set. If by omitting the second-section 
heel 4 and by engaging the screw portion 51 of the third-section heel 5 
with the screw hole 31 of first-section heel 3, a medium-height shoe can 
be formed. After longer use of the assembled shoe having the three heels 
3, 4, 5, only the worn lowest heel 5 is replaced with new one. 
By modifying the screw and screw holes as disclosed in FIG. 2, another 
preferred embodiment of the present invention can be formed, as shown in 
FIG. 3, to include a first-section heel 3a formed with a screw portion 31a 
on its bottom portion, a second-section heel 4a having a screw hole 41a 
formed on its upper surface adapted to engage with the screw portion 31a 
and a screw portion 42a formed on its bottom portion, and a third-section 
heel 5a formed with a screw hole 51a on its upper surface adapted to 
engage with the screw portion 42a of the second-section heel 4a. 
In FIG. 4, a still another preferred embodiment of the present invention is 
shown, which comprises: an upper 1 having a front upper portion 11 adapted 
for covering a wearer's toes and a rear upper portion 12 coupled or 
uncoupled to the front upper portion 11 adapted to cover a wearer's 
instep, a sole 2, a heel 3 and a slide fastener 6 coupling or uncoupling 
the front upper portion 11 and the rear upper portion 12. 
The lower perimeter of the front upper portion 11 is secured on the sole 2. 
A lower strip 61 of the slide fastener 6 includes a front strip portion 
formed on the opening edge of the front upper portion 11 and a rear strip 
portion formed on the rear edge of the sole 2. An upper strip 62 includes 
a front strip portion formed on the front opening edge of the rear upper 
portion 12 adapted to couple the front strip portion of the lower strip 61 
and a rear strip portion formed on the rear opening edge of the rear upper 
portion 12 adapted to couple with the rear strip portion of the lower 
strip 61, and a coupler 63 adatped to couple the upper strip 62 and the 
lower strip 61 so as to assemble a shoe as shown in FIG. 4. 
When disassembling the front upper portion 11 from the rear upper portion 
12 of the upper 1, the rear upper portion 12 can be removed such that the 
front upper portion 11 remains secured with the sole 2 to become a slipper 
for comfortable home wearing.