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Injection Moulded Unupholstered Plastic Chair

A technology of injection molding and seats, applied to chairs, other seating furniture, stools, etc., can solve the problems of easily damaged cushions or upholstery, undesired cushions, increased seat costs and inconvenience, etc.

Inactive Publication Date: 2014-09-17
SEBEL FURNITURE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although it is known to upholster such plastic injection molded seats, or even to provide such seats with cushions, this adds considerably to the expense and inconvenience incurred by the owner of the seat
This disadvantage is particularly true for seats that need to be stacked between uses, since such cushions or upholstery are susceptible to damage
Thus, while a cushion may make the seat more comfortable for the seat occupant, the cushion is a highly undesirable accessory for the owner and consumer of the seat

Method used

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  • Injection Moulded Unupholstered Plastic Chair
  • Injection Moulded Unupholstered Plastic Chair
  • Injection Moulded Unupholstered Plastic Chair

Examples

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Embodiment Construction

[0037] Referring now to the accompanying drawings, figure 1 An old tractor seat 1 stamped from metal is shown. Such tractors are required to be operated for a long period of time, the seat elasticity is poor and driver fatigue is a serious problem. Since the tractor has no cabin and does not have any roof or other shelter, the seat is provided with a relatively large number of openings 2 mainly to enable rainwater to drain from the seat. Such metal seats 1 were replaced by upholstered seats with the introduction of tractor cabins.

[0038] now refer to figure 2 , shows a conventional seat 10 for rowing boats used for more than 100 years with two through holes 12, 13 provided therein. The spacing between the through holes 12 and the through holes 13 approximately corresponds to the spacing between the ischial tuberosities of an adult male. The seat 10 is specifically designed to accommodate the back-and-forth rocking motion of the rower's spine during paddling, and the hol...

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Abstract

A moulded plastic seat (31, 61, 131, 161) for a chair (30, 60, 130, 160) is disclosed. The seat is provided with a pair of recesses (37, 38, 57, 58, 67, 68) or a coalesced pair of recesses (137, 138, 157, 158, 167, 168) which are spaced apart and sized to reduce, but not eliminate, pressure on the ischial tuberosities of a sitter. A range of spacing and sizing corresponding to the height range of the sitter is disclosed. The seat is relatively thin and has some 'give' in use.

Description

technical field [0001] The present invention relates to a plastic seat, and more particularly to an injection molded plastic seat. Background technique [0002] Injection molded plastic seats - in which the entire seat is manufactured in a single operation - have been known for some time and are assigned to the applicant's two U.S. Patents 4,341,419 (Wood) and 5, 860, 697 (Fewchuk) both exemplify this technique. Such seats are widely used, relatively inexpensive to manufacture, typically having a production cost of about $30, and the market for such seats is very competitive. A large market for such chairs is formed by educational institutions, and such chairs are often manufactured in different sizes to cater for students of different ages - ranging from kindergarten students to adult college students. [0003] Such seats are usually manufactured from polypropylene or a plastic substantially equivalent to polypropylene, and thus, while having some elasticity or flexibilit...

Claims

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Application Information

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IPC IPC(8): A47C5/12A47C7/02
Inventor 格雷格·布伦特·韦尔什
Owner SEBEL FURNITURE LTD
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