Adjustable roller skate

Abstract

An adjustable roller skate is provided with a lower frame including a toe stop; a wheel assembly secured to the lower frame; an upper frame including a groove, a trough disposed rearward of the groove, a channel at a rear end, and a seat disposed in the trough and having a recess communicating with the channel; an adjustment mechanism including an externally threaded shaft disposed in both the channel and the recess, and a handle pivotably secured to a rear end of the externally threaded shaft and disposed externally of the upper frame; a sole including a toe cap, an internally threaded member on an underside of a rear end and threadedly secured to the externally threaded shaft, and a stem on the underside and slidably disposed in the groove; and a shoe disposed around an edge of the sole with the toe cap concealed.

Claims

1. A roller skate comprising: a lower frame including a toe stop; a wheel assembly secured to the lower frame and including two axles and four wheels rotatably disposed on the axles; an upper frame including a groove, a trough disposed rearward of the groove, a channel at a rear end, and a seat disposed in the trough and having a recess communicating with the channel; an adjustment mechanism including an externally threaded shaft disposed in both the channel and the recess, and a handle pivotably secured to a rear end of the externally threaded shaft and disposed externally of the upper frame; a sole including a toe cap, an internally threaded member disposed on an underside of a rear end and threadedly secured to the externally threaded shaft, and a stem disposed on an intermediate portion of the underside and slidably disposed in the groove; and a shoe disposed around an edge of the sole with the toe cap concealed; wherein a clockwise rotation of the handle moves both the internally threaded member and the stem.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG. 1 is an exploded view of a roller skate according to the invention;

[0010] FIG. 2 is a perspective view of the assembled roller skate;

[0011] FIG. 3 is a side elevation of the roller skate of FIG. 2 with a shoe mounted thereon; and

[0012] FIG. 4 is a view similar to FIG. 3 showing the toe cap moved rearward after operating the adjustment mechanism.

DETAILED DESCRIPTION OF THE INVENTION

[0013] Referring to FIGS. 1 to 4, a roller skate 1 according to the invention comprises a lower frame 10 including a toe stop 11 and two holes 13; and a wheel assembly 20 including two axles 22 and four wheels 21 rotatably disposed on the axles 22. Two fasteners 12 are driven through the holes 13, two spacers 23, and two fastening members 24 to fasten the lower frame 10 and the wheel assembly 20 together.

[0014] The roller skate 1 further comprises an upper frame 30 including a groove 32, a trough 33 rearward of the groove 32, a channel 34 at a rear end, and a seat 31 disposed in the trough 33 and having a recess 311 communicating with the channel 34; and an adjustment mechanism including an externally threaded shaft 41 having a transverse hole 411 at a rear end, a handle 42 pivotably secured to the externally threaded shaft 41 by mounting a pin 43 through the handle 42 and the transverse hole 411, and a rear flange 44 disposed on the mouth of the channel 34 when the externally threaded shaft 41 is disposed in both the channel 34 and the recess 311.

[0015] The roller skate 1 further comprises a sole 50 including a toe cap 51, an internally threaded member 52 on an underside of a rear end, and a stem 53 on an intermediate portion of the underside and slidably disposed in the groove 32. A shoe 60 is disposed around an edge of the sole 50 with the toe cap 51 concealed. A foot 70 of a wearer can be covered by the shoe 60.

[0016] In an assembled state, the externally threaded shaft 41 is threadedly secured to the internally threaded member 52 and the distance from the toe cap 51 to the handle 42 is a maximum, i.e., maximum size of the roller skate (see FIG. 3).

[0017] In an adjustment operation, an individual may clockwise rotate the handle 42 to move the internally threaded member 52 (i.e., sole 50) rearward and move the stem 53 rearward along the groove 32 until being stopped. At this position, the distance from the toe cap 51 to the handle 42 is a minimum, i.e., minimum size of the roller skate (see FIG. 4). It is understood that the size of the roller skate can be adjusted to a size between the maximum size and the minimum size. Thus, the adjustment is made easy. Further, the adjustment mechanism of the invention is reliable.

[0018] While the invention has been described in terms of preferred embodiments, those skilled in the art will recognize that the invention can be practiced with modifications within the spirit and scope of the appended claims.