Method of shaping and a series of shaping implements for slalom boots

• US 5,337,432 A
• Filed: 06/05/1992
• Issued: 08/16/1994
• Est. Priority Date: 10/31/1989
• Status: Expired due to Fees

• Current Assignee: Markku Pirhonen
• Original Assignee: Markku Pirhonen
• Inventors: Pirhonen, Markku
• Primary Examiner(s): Meyers, Steven N.
• Application Number:
  US07/854,997
• Time in Patent Office: 802 Days
• Field of Search: 12/115.2, 12/114.2, 12/114.4, 12/115.4, 12/116.8, 12/119.5, 12/142 N, 12/146 M, 36/93, 36/94, 36/95, 36/88, 36/119
• US Class Current: 12/115.2
• CPC Class Codes: A43B 5/04 Ski or like boots
• CPC Class Codes: A43D 1/06 Measuring devices for the inside measure of shoes, for the height of heels, or for the arrangement of heels
• CPC Class Codes: A43D 3/08 Devices for stretching special parts of shoes

Abstract

A method is disclosed of shaping and a series of shaping implements for slalom boots, in which the slalom boot consists of a hard plastic outer shell and an inner boot manufactured from a flexible material. In accordance with the invention the boot is shaped to a perfect fit for the user as follows: a boot of the correct length is selected in accordance with the user'"'"'s foot; the individual forms of the foot protruding from the boot are recorded; a point in the outer shell corresponding to each protrusion is shaped as follows: the point to be shaped is heated locally from the outside by hot-air blowing; the heated point is pressed from inside by means of a wooden piece, when the plastic material stretches and a protrusion arises.

Claims

1. A method of shaping slalom boots, consisting of a hard plastic outer shell and an inner boot made of flexible material, to conform with individual protrusions of a user'"'"'s foot and comprising the steps of:

forming a pattern depicting the sole of the user'"'"'s foot from an inflexible material;

placing the pattern inside the boot;

locally heating a point corresponding to a protrusion in the pattern from outside the boot by hot-air blowing; and

pressing the heated point from inside the boot using a wooden shaping head to stretch the plastic material to conform to the protrusion in the pattern.

2. The method of claim 1 wherein:

the heating step is performed by a hot-air blower;

the pressing step is performed by at least one pressing device; and

wherein said wooden shaping head is attached to the pressing device.

3. The method of claim 2 wherein:

the pressing step is performed by a pair of shaping heads intended to broaden the heel and a pressing device fitted between the shaping heads.

4. The method of shaping of claim 2 wherein the pressing step is performed hydraulically.

5. The method of shaping of claim 2 wherein:

the pressing step is performed using three rounded wooden shaping heads of varying lengths to make local protrusions.

6. The method of shaping of claim 2 wherein:

the pressing step is performed by a pressing device including two spaced plates, a flexible bag with hydraulic fluid connections set between the plates and wooden pieces surrounding the bag and protruding between the plates, the extreme edge of which is essentially the shape of a part of the sole.