Chairs and seats – Movable bottom – Interconnected with back for relative concurrent movement
Patent
1987-02-03
1988-09-06
Zugel, Francis K.
Chairs and seats
Movable bottom
Interconnected with back for relative concurrent movement
297347, 297437, 297346, A47C 106, A47C 902
Patent
active
047688319
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an arrangement for an operator's seat with a foot control for a working machine which can be operated by an operator, the operation of which occurs through the adjustment of the foot control to different angular positions, in conjunction with which the foot control is so arranged as to act as a support for at least one of the operator's feet during work and is connected to the seat unit of the operator's seat in such a way that the foot control is connected to the seat unit and is so arranged as to accompany it as it moves, and that the movements of the seat unit and the accompanying foot control are determined by a guide arrangement connected to the operator's seat, which guide arrangement permits the movement of the operator's seat towards and away from the working machine between different positions for varying the distance between the operator and the working machine without affecting the position of the foot control relative to the seat unit through the aforementioned movements, in conjunction with which the foot control is adjustable in relation to the seat unit, in this way giving the operator an ergonomically correct working position irrespective of his physical size, and in conjunction with which the seat unit is supported by a telescopically extending upright which can be displaced along the guide.
TECHNICAL PROBLEM
There are within industry many work operations that are performed in a seated position and are associated with repeated and one-sided patterns of movement, such as precision operations in the areas of assembly, the machining of materials and certain manufacturing operations. Work operations which involve the simultaneous actuation of controls and machining of material call for well synchronized and coordinated movements of the arms/hands and legs/feet and good conditions of vision so as to avoid exposure to unnecessary physical stress. For work of this type the work place itself (table, chair and equipment) must be so designed as to provide a good working position for every individual.
An example of work of this type is provided by machine sewing. This involves performing precision work at a high rate of working, which calls for well synchronized movements of the arms, hands, back, legs and feet, at the same time as which the eyes must be directed towards the foot and the needle of the sewing machine. Working under such conditions places extremely high demands on the ergonomic design of the work place. No great stresses are imposed on the muscles and joints by sewing machine work, although the stresses which are imposed are often of a sustained nature. Muscles and joints in the back, the neck and the shoulders frequently have to adopt the same position for a long time. Many seamstresses in time experience permanent aching mainly in the shoulders, the neck and the back. There is a good deal of evidence to suggest that this is due to the fact that the work place did not provide a good working position. Most of the present-day work places for sewing machinists do not satisfy the requirements in respect of a high degree of adaptability to suit individuals. It is common to find that the chair is unsuitable, the table is at the incorrect height, or the controls are in the wrong position. This can give rise to fixed and static working positions.
The sewing machinist's traditional work place consists of a sewing machine/motor, a table top/stand, controls and a chair. The machine, motor, table, stand and operating controls together form a unit. The free-standing chair is often a simple work chair. The layout of the work place is essentially by the function of the sewing machine and to a lesser extent by human requirements and anthropometric dimensions. Certain possibilities for adjustment are provided, although these are time-consuming and difficult to perform. The range of variation is also too small. What this results in in practice is that no adjustments or only simple adjustments are made.
DESCRIPTION OF THE PRIOR ART
The present inve
REFERENCES:
patent: 573133 (1896-12-01), Browne
patent: 858193 (1907-06-01), Mallard
patent: 1590240 (1926-06-01), Gorton
patent: 1620448 (1927-03-01), Dourdoufis
patent: 1772581 (1930-08-01), Powers
patent: 3256036 (1966-06-01), Nolan
patent: 4046419 (1977-09-01), Schmitt
Liedberg Lennart
Ostlund Lars
Bohusgruppen Ett Samhallsforetag
Zugel Francis K.
LandOfFree
Arrangement for an operator's seat with a foot control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arrangement for an operator's seat with a foot control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for an operator's seat with a foot control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1602942