MXPA99008678A - Stepping tool for manhole or the like - Google Patents

Abstract

A safe stepping tool for a manhole or the like, comprising a tread (5 or 23) and side portions (6 or 24) disposed on both sides of the tread, wherein at least a top surface of the tread comprises a horizontal portion (11) extending from a central portion (S) toward the side portions or downwardly inclined portions (27) extending from the central portion toward the side portions, and inclined portions (12 or 28) inclined upwardly at one to five degrees from respective ends of the horizontal portion or the downwardly inclined portions, so that when using the stepping tool for ascending or descending, a user can set the feet on the tread in a more natural manner to enable the user to ascend or descend in a more stable condition with less fatigue at feet and knees.

Description

FOOT SEAT TECHNICAL FIELD The present invention is related to a foot of a register, etc. which comprises a footprint and lateral portions that extend from it and are placed on both sides of the footprint.

TECHNOLOGICAL BACKGROUND A conventional foot of a register, etc. of the same type is described, for example, in Japanese Patent No. 2,622,826 in which the foot seating comprises an upper tread surface which is inclined upwardly from a central portion thereof to the end portions thereof. at an angle that varies from 1 to 5 degrees for operators to put their feet on the footprint in a natural position while not suffering from tiredness in their feet or knees. However, according to this well-known standing seat, since operators slide on the sloping surface and become unstable unless the inner sides of their feet are correctly positioned on the upper center surface of the footprint when they move towards up and down, both feet are aligned, to make contact with each other in the footprint of the same foot, which causes the problem that both feet get tangled, which makes them feel cramped.

DESCRIPTION OF THE INVENTION The present invention has been made to solve the aforementioned problems of the prior art and it is an object of the invention to provide a foot of a register, etc. that allows operators to put their feet in a footprint in a natural state under stable conditions, and to reduce fatigue in their feet or knees when they move up and down the registry using the footrest including the footprint that the surface tilted up at intervals. To achieve the previous object, the standing seat, a record, etc. of the present invention is characterized in that at least one upper surface of a tread comprises a horizontal portion extending from a central portion of the tread towards the lateral portions thereof and inclined portions inclining upwards from both ends of the tread. the horizontal portion towards both ends of the same at an angle that varies from 1 to 5 degrees. The footrest of the present invention is characterized in that the footprint comprises a center and a synthetic resin that covers the center, and the center being linear and arranged hori zont a lmen te, and the synthetic resin covering the center comprises a portion uniform having a uniform thickness of a central portion thereof to the side portions thereof and an inclined portion that slopes upwardly from both ends of the uniform portion and increasing in thickness from both ends of the uniform portion to both ends of the same. the same at an angle that varies from 1 to 5 degrees. The foot seat of the present invention is characterized in that at least one upper surface of the tread comprises first portions inclined downwardly from a central portion of the tread toward the lateral portions thereof and second portions inclined upwardly from both ends of the first portion inclined towards both ends thereof at an angle varying from 1 to 5 degrees. The footrest of the present invention is characterized in that the footprint comprises a center and a synthetic resin that covers the center, and the center being linear and arranged horizontally, and the synthetic resin covering the center comprises first portions inclined downwards from a central portion thereof, towards the lateral portions thereof and second portions inclined upwards of both ends of the first inclined portion, to the horizontal surface at an angle varying from 1 to 5 degrees.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front view of a foot of a register, etc. according to one embodiment of the invention; Figure 2 is a plan view of Figure 1; and Figure 3 is a front view of a foot of a register, etc. according to another embodiment of the invention.

BEST MODE FOR CARRYING OUT THE INVENTION One embodiment of the present invention is now described with reference to Figures 1 to 3. First, in Figures 1 and 2 showing a first embodiment of the present invention, a number 1 represents a seat of foot in its entirety, and comprises a center 2 made of iron and having a U-shape when viewed from the flat surface thereof, the extremities 3 extending from the center 2 and the synthetic resin 4 such as poly-ropylene to cover the center 2 except a part of each limb 3 in order to prevent center 2 from rusting. The standing seat 1 is fixed to the register in a state where the ends 3 which are not covered by the synthetic resin 4 are embedded, for example, in the concrete of the register. The number 5 represents a footprint formed in the foot seat 1, and 6 are the side portions formed on both sides of the footprint 5. The footprint 5 has a plurality of insoles to prevent slip 8 on the top surface in an axial direction of it to prevent the feet 7 of the operators from slipping. A corrugated grip portion 9 is formed on the upper surface of the tread 5 in its axial direction so that it can grip the tread 5 with their hands. The reflectors 10 are provided at both ends of the hue 5. As shown in Figure 1, the imprint 5 is structured in such a way that the horizontal linear center 2 is covered with a synthetic resin 4 over its entire surface. The synthetic resin 4 comprises a uniform horizontal portion 11 which is uniform in thickness from a central portion S thereof to the side portions 6, 6 and the inclined portions 12 which are inclined upwards from both ends of the uniform horizontal portion. 11 and increase in increasing thickness from both ends of the uniform horizontal portion 11 towards both ends thereof at an angle varying from 1 to 5 degrees. The footprint 5 also has a uniform horizontal portion 11, the inclined portions 12 the "avoiding" insoles "1 slip 8 and the reflectors 10, allow the foot seat 1 to be reversibly used, however, the synthetic resin 4 can be uniform in thickness in its lower surface and increase in thickness only in its upper surface as discussed above.Since the foot seat 1 is structured as mentioned above, when the operators move up and down using a plurality of standing seats 1 which are arranged vertically in the register, etc., these place or step with their feet 7 alternately in the footprint 5 of each foot-1 seat. Since the footprint 5 has the horizontal portion 11 and this inclined upwards from both ends of the horizontal portion 11 towards the side portions 6, 6 at an angle varying from 1 to 5 degrees in at least the upper surface of the sma, the operators step with their feet 7 at the end portions of the inclined portions 12 while their feet are slightly opened or separated and placed in a marker portion between the inclined portions 12 towards the horizontal portion 11 on the inner sides of it, they can put their feet 7 on the footprint 5 in a more natural state without slipping from the inclined portions 12 towards the horizontal portion 11. As a result, they can move up and down without slipping or missing the step in the footprint in a stable condition, and therefore there is no tiredness in your feet or knees. A standing seat as shown in Figure 3 as a second embodiment of the present invention is described below. The foot seat 1 comprises a center 21 which is made of iron and has a U-shape when seen from the flat surface thereof, and of synthetic resin 22 such as polypropylene to cover the center 21 except a part of the ends extended from center 21 in order to prevent center 21 from oxidizing. A number 23 represents the footprint formed in the standing seat 1, and 24 are the side portions 24 formed on both sides of the footprint 23. The footprint 23 has a plurality of templates that prevent slippage 25 on the upper surface in the axial direction thereof to prevent operators from slipping with theirs. feet 7, and reflectors 26 are provided on both sides of the footprint 23. The footprint 23 comprises first inclined portions 27, 27 which slope downwardly from the central portion S thereof to the side portions 24, 24 and the thickness it decreases from its central portion S towards both ends thereof and second inclined portions 28, 28 inclined upwards from both ends of the first inclined portions 27, 27 with respect to the horizontal surface at a variable angle of from 1 to 5. degrees and increasing in thickness at both ends of the first inclined portions 27, 27 towards the lateral portions 24, 24. The tread 23 also has first inclined portions 27, 27, l the second inclined portions 28, 28, the skid-preventing insoles 25 and the reflectors 26, 26 on their lower surface, where the foot 1 can be used re ersily. However, uniformly the footprint 23 can be made in thickness on the lower surface thereof while only the upper surface thereof can gradually increase as explained above. Since the foot seat 1 is structured as stated above, also in the second embodiment, a plurality of standing seats 20 are arranged in the register in such a way that the operators put their feet 29 on the footprint 23 of the standing seats 20 successively when moving up and down using the upright seats 20. Since the upright seat 20 comprises the footprint 23 having the first inclined portions 27, 27 inclined downwardly of the central portion S of it towards the lateral portions 24, 24 and decreases in thickness of the central portion S at both ends thereof and the second inclined portions 28, 28 inclined upwards of both ends of the first inclined portions 27, 27 in relation to the surface horizontal at an angle varying from 1 to 5 degrees, operators tread with their feet 29 at the end portions of the inclined portions 28, 28 while their feet are slightly open or -separated and are placed in marker portions between the inclined portions 28 towards the first inclined portions 27 on the internal sides thereof, so that they can put their feet 29 on the tread 23 in a more natural state without slipping. As a result, they can move up and down without slipping or missing the step in the tread 23 in a stable condition, and with this the feet or knees do not tire. INDUSTRIAL APPLICATION In accordance with the present invention, at least the surface The top of the tread is formed of a horizontal portion extending from the central portion toward the lateral portions of the inclined portions, inclined downward toward the lateral portions and other inclined portions, inclined toward either of the ends of the horizontal portion or the portions inclined at an angle that varies from 1 to 5 degrees, operators can put their feet on the footprint in a more natural state when they move up and down using the footrest, and with this they can move upwards and down in a more stable condition, leading to a safe standing seat for use in a registry, etc. while operators do not feel tired on their feet or knees.

Claims (4)

1. A standing seat comprising a footprint and side portions extending therefrom and positioned on both sides of the footprint, wherein at least one upper surface of the footprint comprises a horizontal portion extending from a central portion of the footprint. footprint towards the lateral portions thereof and inclined portions, inclined upwards from both ends of the horizontal portion at both ends thereof and. at an angle that varies from 1 to 5 degrees s.

2. The standing seat according to claim 1, wherein the footprint comprises a center and a synthetic resin that covers the center, and the center being linear and hori zontically disposed, and the synthetic resin that covers the center comprising a uniform portion being uniform in thickness from a central portion thereof to the lateral portions thereof and an inclined portion being inclined upwards from both ends of the uniform portion and increasing in thickness from both ends of the uniform portion at both ends of it at an angle that varies from 1 to 5 degree s.

3. A standing seat comprising a footprint that is adapted to receive a person's feet thereon and side portions extending therefrom and are positioned on both sides of the footprint, wherein at least one top surface of the footprint The footprint comprises first inclined portions, inclined downwards from a central portion of the footprint towards the lateral portions thereof and second inclined portions, inclined upwards of both ends of the first portion inclined towards both ends thereof at an angle varying from 1 to 5 s. A standing seat according to claim 3, wherein the footprint comprises a center and a synthetic resin that covers the center, and the center being linear and disposed ho ri zont alment e, and the synthetic resin that covers the center comprises first inclined portions, inclined downwards from a central portion thereof to the lateral portions thereof and second inclined portions, inclined upwards from both ends of the first portion inclined to the horizontal surface at an angle varying from 1 at 5 degrees. SUMMARY OF THE INVENTION In accordance with the present invention, since an upper surface of a tread is formed of a horizontal portion extending from a central portion to the lateral portions or inclined portions, inclined downward from the lateral portions or other inclined portions extending from both ends of the horizontal portion or portions inclined at an angle that varies from 1 to 5 degrees, allows operators to put their feet on a footprint in a more natural state to move up and down under a stable condition, and to reduce your tiredness on your feet or knees when you move up or down on a log using the standing seat. Up to this point, in the foot of the registry the track (5 or 23) and the lateral portions (6 or 24) that extend from it and are placed on both sides of the track (5 or 23) whereby less an upper surface of the tread is formed of a horizontal portion (11) extending from a central portion (S) of the tread towards the lateral portions thereof, inclined portions (27) inclined downward towards the lateral portions or inclined portions (12 or 28) inclined upwards from both ends of the horizontal portion or both ends of the inclined portions (27) at an angle varying from 1 to 5 degrees.