Activating platform

Abstract

An activating platform is disclosed. The platform includes a base that has a lower surface that is curved in a direction transverse to a longitudinal axis. The curved shape of the base provokes a user rock around in a small angle around a middle position, thereby promoting active sitting.

Claims

1. A seating apparatus, comprising: a base with a lower surface that contacts a ground surface and a longitudinal axis that extends from a front edge to a rear edge, the lower surface of the base being substantially flat along a length of the longitudinal axis to restrict rocking of the seating apparatus from forward to back, and the lower surface of the base having a curvature in a direction transverse to the longitudinal axis to permit the seating apparatus to rock from side to side; and a seat mounted on a supporting member that extends from the base to the seat, wherein different portions of the lower surface contact the ground surface when the seating apparatus rocks from side to side.

2. The seating apparatus of claim 1, wherein the base comprises a cylindrical curved underside.

3. The seating apparatus of claim 1, wherein the base is elongated along the longitudinal axis.

4. The seating apparatus of claim 3, wherein the support member is mounted to the base at a position nearer to the rear edge of the base than the front edge.

5. The seating apparatus of claim 4, wherein the base comprises a support plate that defines a standing area in a front portion of the support plate and a sitting area in a rear portion of the support plate.

6. The seating apparatus of claim 1, wherein the base comprises a support plate with at least one runner disposed on the underside, and the lower surface of the base is a bottom surface of the at least one runner.

7. The seating apparatus of claim 1, wherein the lower surface of the base is curved with a radius between 800 millimeters (mm) and 1200 millimeters (mm).

8. The seating apparatus of claim 7, wherein the lower surface of the base is curved with a radius of about 1000 mm.

9. The seating apparatus of claim 1, wherein the seat is saddle shaped.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will now be described in detail in reference to the appended drawings, in which:

(2) FIG. 1 is a perspective view of the invention

(3) FIGS. 2a and 2b show a user standing on the inventive activating platform

(4) FIG. 3 is a side view of the inventive balance platform, with a person seated on the chair

(5) FIG. 4 is a front view of the balance platform, in three different positions

(6) FIG. 5 shows an implementation of the inventive balance platform mounted on a wheeled dolly.

DETAILED DESCRIPTION

(7) The figures show an embodiment of the inventive activating platform comprising a slightly curved support plate 5 and a mounting arrangement 2 with gas lift cylinder and a saddle seat 3 mounted on the plate. The support plate is designed to be so roomy that the user may rise and stand on the platform in front of the seat. Thus, the platform forms a combined standing and sitting platform divided into an area or part 6 for standing on and an area 7 for sitting, i.e. the part of the platform with the chair. The platform may find application as a work platform for a person performing a part of or perhaps the main part of his work standing, but who occasionally wants to sit down. The plate is designed with a curvature allowing a person to stay thereon during a whole day of work without feeling exhausted. This is apart from dedicated training platforms intended to be used only for short periods.

(8) The seat may be of any shape suited for the purpose, but is preferably of the saddle shaped variety, e.g. the seat disclosed in Norwegian patent 328285, which is owned by the present inventor. However, the embodiment of the invention shown in FIG. 1 employs a different saddle shaped seat that is not so long as the seat in NO 328285, but of the same or a similar width. The shallow shape of the seat allows more room for the user on the support platform.

(9) FIG. 1 the seat 3 is mounted with its sitting direction 90 on the rocking direction of the support plate 5.

(10) FIG. 2a shows a user standing on the activating platform while working at an adjustable computer table. The user is standing in front of the chair.

(11) FIG. 2b the user is standing on the platform in front of the chair. The seat 3 has been tilted forward, now acting as a leg support.

(12) FIGS. 3 and 4 a user is sitting on the chair, more or less like riding on horseback. The chair allows the user to find a comfortable sitting position wherein the body is in balance along a line or axis through the middle of the body from the head to the feet. The balance line is indicated in the figures with a line 13. This balanced sitting position is beneficial as the body will have to use its muscles to maintain the balance, thus obtaining a measure of training said muscles. The object of the support plate 5 is to provoke this balance. The body is thrown out of balance, and has to regain the balance by flexing the hips and lumbar area. The body will start rocking, and thereby train the muscles in the back and belly supporting the spinal column. This is illustrated in FIG. 3, showing a user sitting on the chair. In the middle position the user is in balance, as shown by the line 13 and the thick bar in the background, both being in line. In the leftmost position, the user has rocked the chair towards the left and tries to regain balance by flexing in the lower back. This is shown by the line 13 still being vertical. In the rightmost position, the user has rocked towards the right, again compensating for the unbalance.

(13) In order to obtain the desired provocative effect, the support plate 5 should form a cylindrical arched contact plane towards the floor. The curvature should equal a radius corresponding to the hip height of the user. The hip height is of course dependent on the height of the user, but in adults a hip height of 800 to 1200 mm may be assumed. Thus, a radius of about 1000 mm is preferred, as this will suit an average user. When standing, the user will approach a position akin to Leonardo's famous figure, the feet meeting the plate at a normal angle, and with the calves and knee joints normal to the plate. However, the hip height should be a projected hip height, as discovered by Michelangelo, still referring to classical art theory. The possible extent of rocking could also be limited to about +50 mm (in horizontal direction, measured at the hips), to avoid the body leaving the range where it can handle the rocking movement. To limit the rocking range, the curvature could be reserved to the central area of the plate, with flattened parts outside this area.

(14) Alternatively, stoppers could be mounted on the underside of the plate, on both ends thereof.

(15) The plate may be produced in laminated wood, plastic or metal. The plastic material may be reinforced. One function of the support plate is to prevent the user from placing the feet on the ground/floor. With the feet on the ground, the body will no longer find balance in the desired optimal way. For this reason, conventional open runners are avoided.

(16) The plate may be designed as a curved plate or as a flat plate with runners.

(17) FIG. 5 shows how the chair may be supported on a wheeled platform or dolly 6. The dolly includes a frame or plate 8 with castors 9. The support plate 5 is fastened to the dolly by a system of springs (not shown) located below the plate. The spring system may be similar to the system used in the old fashioned American rocking chair, or a more modem system of torsion spring.

(18) A point of the invention is that the user in all positions, even when seated, should have the feet placed on the support plate, and not as in conventional rocking chairs, where the user may place the feet on the floor. It is important to understand the difference between this chair and the common rocking chair. In a rocking chair the body is not in balance, but is resting against a backrest. The system of chair and body may be in balance, but the body is resting unbalanced and is moved by the chair. The runners of a rocking chair are shaped to allow the user to find a stable lean back position. Thus, the body is passivated and there is no activation of the muscles. In principal there are two ways of sitting, either balanced in the centre of one's own gravity, or in an unbalanced position. The inventive chair is designed to move in a small range around the middle position. Thus, the support plate is symmetrically shaped.