Chairs and seats – Movable bottom – Interconnected with back for relative concurrent movement
Patent
1987-10-01
1989-02-14
Zugel, Francis K.
Chairs and seats
Movable bottom
Interconnected with back for relative concurrent movement
297349, 297423, 248421, A47C 106
Patent
active
048042285
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to chairs for rendering service to customer comprising a base member affixed to a stationary, support such as a floor, a seat structure as well as means interposed between the base member and the seat structure for adjusting the vertical distance between the seat structure and the base member.
SUMMARY OF THE INVENTION
The chairs of the above type are used by barbers, hairdressers, cosmetologs and people rendering similar kinds of services to the customers. The customer chairs used nowadays have a construction, wherein the base member is placed directly beneath the seat structure and the means for adjusting the vertical distance between the seat structure and the base member comprise a cylinder-piston combination driven by a pressure means and are adjustable in length in the vertical direction. By operating this cylinder-piston-combination the seat structure can be raised and lowered. The customer chairs have also a tiltable back member.
The area covered by various movements of present chairs does not meet those requirements, that have become apparent in ergonomical researches directed to ways of carrying out various operations in work. One inconvenience, which has become evident, is that the range of adjustment of the present customer chairs in a vertical direction is too small for obtaining an ergonomically acceptable position of the worker, when the sizes of the customer and the worker have varying proportions. This drawback has become evident for example in the situations showing a combination tall worker/short customer or on the contrary. These combinations do not allow a suitable working position. For example the combination short worker/tall customer requires in the practice the lowering of the customer chair to a relatively low position. The present customer chairs do not allow this possibility, because the means interposed between the base member and the seat prevent the seat from being positioned sufficiently low. Another drawback, which is not dependent of the physical propotions between the worker and the customer, but effects all workers serving the customers, is the constructional feature, that the base member of the chair, either circular or having several legs, must be quite large for creating a sufficient support. In some cases the base member even extends outside the area of the seat structure itself. This does not allow the worker to get sufficiently close to the customer during his work and results consequently in uncomfortable and distorted working positions and can thus lead to professional diseases.
The present customer chairs involve further the drawback, that cleaning the floor is not easy due to the position of the base member. The services rendered in those professions, for which the customer chair according to the invention is intended, require cleaning after each attendance of the customer. On the other hand, keeping the working room clean is important for the convenience of the worker and the customer. It is thus advantageous, that the cleaning can be done so easily and quickly as possible.
The object of the present invention is to remove the above mentioned drawbacks. For achieving this purpose the chair for rendering service to customer according to the invention is mainly characterized in that the base member is disposed in front the seat structure seen in a horizontal direction and that the means for moving the seat structure in a vertical direction contain an arm mechanism pivotable in a vertical plane about its point of attachment in the base member.
The chair according to the present invention provides several benefits with the above described features. The customer can be raised to a sufficiently high position and correspondingly lowered low enough, so that the level of the operation of the worker is at a suitable height. In this case all various customer/worker heights-combinations, such as short customer/tall worker or on the contrary, do not form a hindrance to an acceptable working position.
Moreover, the feet
REFERENCES:
patent: 2849051 (1958-08-01), Streeter
patent: 3236556 (1966-02-01), Lathers
patent: 3302971 (1967-02-01), Lory
patent: 3807680 (1974-04-01), Wilson et al.
patent: 4344594 (1982-08-01), Hirth
patent: 4553178 (1985-08-01), de Polo
patent: 4614246 (1986-09-01), Masse et al.
patent: 4711486 (1987-12-01), Fujiyama
LandOfFree
Chair for service to customer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Chair for service to customer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chair for service to customer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1361976