REMOVABLE HEEL CONNECTOR APPARATUS
A removable heel connector apparatus comprises a shoe, a heel connector, a heel, a heel release. The heel connector includes a bolt to connect the heel against withdrawal from the shoe. The heel may be withdrawn from the shoe by depressing the heel release. The heel connector also includes a torque balance providing strength and durability in use to a shoe with removable heel as if an ordinary shoe without removable heel.
Field of the Invention
The present invention relates to shoes and more particularly pertains to a new removable heel connector apparatus.
Description of the Prior Art
The use of shoes with removable heel is known in the prior art. Known prior art shoes include U.S. Pat. Nos. 5,953,836; 8,112,908; 8,505,218; 8,657,110; 8,832,968 and 9,009,990.
While these devices fulfill their respective, particular objectives and requirements, they are generally weak in strength and not durable in daily use. The aforementioned patents do not disclose a new removable heel connector apparatus providing quick and simple mechanism of locking and releasing the removable heel against withdrawal from the shoe and providing strength and durability in use to a shoe with removable heel as if an ordinary shoe without removable heel.
SUMMARY OF THE INVENTIONIn general the present invention is directed to a wholly unique removable heel connector apparatus. The structure of the present removable heel connector apparatus comprises a shoe, a heel connector, a heel, a heel release, a release cover and two springs. The shoe comprises a top shoe sole and a bottom shoe sole having a protrusion, a connector opening, a thrust surface and a connector cavity. The heel connector includes a bolt having a slot and a tilt surface and includes a torque balance having an enforcement portion. The heel includes a button opening, a sole cavity having a bolt cavity, a cover ledge, a thrust wall and two screw holes. The heel release includes a push button and a detent plate having a plate opening, a detent and two spring recesses. The release cover includes a bolt opening and two screw openings having screw recess.
In relation to the assembly of the removable heel connector apparatus, the connector opening and connector cavity provide a fixed assembly relation between the shoe and the heel connector. The protrusion and the sole cavity provide relative assembly relation between the shoe and the heel. At full insertion of the bolt into the heel, the thrust surface contacts with the release cover and provides stops limiting the insertion of the bolt into the heel.
The heel connector is the key feature revealing novelty and non-obviousness of this invention.
The first role of the heel connector in this invention is to connect the removable heel against withdrawal from the shoe. During the insertion of the bolt into the heel, the tilt surface interacts with the detent and depresses the spring in a tilting manner. At full insertion of the bolt into the heel, the detent plate of the heel release is projected outwardly by the bias of the spring thrusting against the heel at thrust wall and against the detent plate at the spring recess urging the detent to interlock the bolt at the slot. This illustrates the mechanism of locking the heel against withdrawal from the shoe. The heel may be withdrawn from the shoe by depressing the push button. It depresses the spring and moves the detent out from the slot to unlock the heel from the shoe.
The second role of the heel connector in this invention is to balance the stress acting on the heel from the ground and the stress acting by the user's foot on the walking shoe. The heel connector should be integrally cast or machined from relatively strong and durable material, such as metal or steel. As the heel connector starts from the toe area of the shoe and ends inside the heel, it provides strength and durability in use to a shoe with removable heel as if an ordinary shoe without removable heel.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:
Referring to the drawings and with particular referring first to the
By reference to
During the insertion of the bolt 320 into the heel 400, the tilt surface 322 interacts with the detent 522 and depresses the spring 700 in a tilting manner. At full insertion of the bolt 320 into the heel 400, the detent plate 520 of the heel release 500 is projected outwardly by the bias of the spring 700 thrusting against the heel 400 at thrust wall 423 and against the detent plate 520 at the spring recess 523 urging the detent 522 to interlock the bolt 320 at the slot 321. This illustrates the mechanism of locking the heel 400 against withdrawal from the shoe 200.
By reference to
During the insertion of the bolt 320 into the heel 400, the tilt surface 322 interacts with the detent 522 and depresses the spring 700 in a tilting manner. At full insertion of the bolt 320 into the heel 400, the detent 522 interlocks the bolt 320 at the slot 321. The heel connector 300 should be integrally cast or machined from relatively strong and durable material, such as metal or steel.
- a. The heel connector 300 is the key feature revealing novelty and non-obviousness of this invention. As illustrated in
FIG. 12 , the first role of the heel connector 300 in this invention is to connect the shoe 200 and the heel 400. The second role is to balance the stress acting on the heel 400 from the ground and the stress acting by the stress at the user's foot thenar on the torque balance 310 when the shoe is worn for walking. As the heel connector 300 starts from the toe area of the shoe and ends inside the heel 400, it provides strength and durability in use to a shoe with removable heel as if an ordinary shoe without removable heel. The enforcement portion 311 further enhances the strength of the shoe.
Having thus described our invention, other skilled in the art will readily perceive variations, improvement and modifications within the skill of the art and such variations, improvements and modifications are intended to be included herein limited only by the scope of our hereinafter appended claims.
Claims
1. A removable heel connector apparatus comprising:
- a shoe comprising a top shoe sole and a bottom shoe sole having a protrusion, a connector opening, a thrust surface and a connector cavity;
- a heel connector including a torque balance and a bolt having a slot and tilt surface;
- a heel including a button opening, a sole cavity having a bolt cavity, a cover ledge, a thrust wall and two screw holes;
- a heel release including a push button and a detent plate having a plate opening, a detent and two spring recesses;
- a release cover including a bolt opening and two screw openings, one screw opening having one screw recess;
- two springs being accommodated at said spring recesses;
- two screws being assembled at said screw holes;
- said sole cavity accommodating said protrusion;
- said bolt cavity accommodating said bolt;
- said opening allowing the insertion of said bolt into said heel irrespective the depression of said heel release;
- said release cover being relatively fixed with said heel and contacting said thrust surface at full insertion of said bolt into said heel;
- said tilt surface interacting in a tilting manner with said detent and depressing the spring during the insertion of the said into the said heel;
- said spring thrusting against said heel at said thrust wall and thrusting against said detent plate at said spring recess at full insertion of said bolt into said heel;
- said detent plate being projected outwardly by the bias of said spring and interlocking said bolt at said slot at full insertion of said bolt into said heel;
- said push button being relatively fixed with said detent plate; and
- said detent unlocking said bolt as said push button is depressed.
2. The removable heel connector apparatus of claim 1, wherein said torque balance includes an enforcement portion.
Type: Application
Filed: Dec 2, 2015
Publication Date: Jun 8, 2017
Inventor: Tin Ray HO (San Bruno, CA)
Application Number: 14/956,924