STACKABLE CHAIR WITH RACK ATTACHMENT MEMBERS
A stackable chair has a seating surface, at least three legs and a rack attachment member attached to each of the legs. Each rack attachment member has a leg attachment portion attached to one of the legs and a rack attachment portion capable of reversibly securing a portion of a rack to one of the legs below the seating surface. Typically, the invention further includes a rack, such as a thick rack, disposed below the seating surface and generally parallel thereto. The rack having a plurality of radiating prongs, each of the prongs being attached to a rack attachment portion of one of the rack attachment members.
This invention relates generally to lightweight chairs and, more specifically, to stackable lightweight chairs.
BACKGROUND OF THE INVENTIONStackable lightweight chairs have become very popular. Increasingly popular are stackable lightweight chairs having a rack, such as a book rack, disposed below the seating surface of the chair. Such a stackable chair with a rack disposed below the seating surface is illustrated in
A problem with such stackable chairs having a rack disposed below the seating surface is that, once the rack is attached to the chair, the chair becomes relatively “non-stackable.” This is because the racks prevent each chair from closely nesting with an identical chair. This problem is illustrated in
The relatively “non-stackable” nature of stackable chairs having a rack disposed below the seating surface is especially important to those responsible for shipping large quantities of such stackable chairs in bulk. Because of the relative “non-stackability”of such chairs, the cost of shipping large quantities of such chairs in bulk is unduly large.
Attempts have been made to avoid the shipping difficulties caused by the aforementioned lack of stackability by shipping chairs separate from “slip-on” wire book racks—flexible wire book racks which can be flexed and installed into leg holes by the end user. However, such slip-on wire book racks are typically retained loosely within a chair, so that the book racks tend to rattle. Also, such slip-on wire book racks can be easily removed from chairs by mischievous students, thereby resulting in safety issues.
Accordingly, there is a need for a stackable lightweight chair designed for use with a rack disposed below the seating surface which avoids the above-mentioned problem with the prior art.
SUMMARY OF THE INVENTIONThe invention satisfies this need. The invention is a stackable chair comprising (a) a seating surface, (b) at least three legs disposed generally vertically below the seating surface, the at least three legs being disposed at an angle slightly less than 90° with respect to the vertical, such that the chair is capable of stacking onto an identical chair, and (c) a rack attachment member attached to each of the at least three legs. Each rack attachment member comprises (i) a leg attachment portion attached to one of the at least three legs, and (ii) a rack attachment portion capable of reversibly securing a portion of a rack to one of the at least three legs below the seating surface.
These and other features, aspects and advantages of the present invention will become better understood with reference to the following description, appended claims and accompanying drawings where:
The following discussion describes in detail one embodiment of the invention and several variations of that embodiment. This discussion should not be construed, however, as limiting the invention to those particular embodiments. Practitioners skilled in the art will recognize numerous other embodiments as well.
In one aspect of the invention, the invention is a stackable chair 10 comprising a seating surface 12, at least three legs 14 and a rack attachment member 16 attached to each of the legs 14. This aspect of the invention is illustrated in
The seating surface 12 is typically disposed in an approximately horizontal orientation. In the embodiment illustrated in the drawings, the seating surface 12 is integral with a back member 18. In such an embodiment, it is typical that the seating surface 12 and the back member 18 are made from a plastic material.
The at least three legs 14 are disposed generally vertically below the seating surface 12. However, each of the legs 14 is disposed at an angle slightly less than 90° with respect to the vertical, such that the chair is capable of stacking onto an identical chair. Typically, the at least three legs 14 comprise four legs 14, as shown in the embodiment illustrated in the drawings. Also typically, each of the legs 14 is made from a tubular metal material such as steel.
Each rack attachment member 16 comprises a leg attachment portion 20 and a rack attachment portion 22 as illustrated in
As illustrated in the embodiment shown in the drawings, the rack attachment portion 22 of each rack attachment member 16 can define a continuous hollow cylinder. Such continuous hollow cylinder is sized and dimensioned to snugly attach around a portion of the rack 23 and to thereby firmly be retained to the rack 23.
Also, as illustrated in the embodiment shown in the drawings, the leg attachment portion 20 is adapted to attach to one of the legs 14. As seen in the drawings, the leg attachment portion 20 can define a clamp having a first clamp member 24 and a spaced apart second clamp member 26. The first clamp member 24 and the second clamp member 26 are attachable to one another by one or more fasteners 28, such as nuts and bolts. Preferably, the first clamp member 24 and the second clamp member 26 are attachable to one another by a single fastener.
As best seen in
Typically, the stackable chair 10 further comprises a rack 23, such as a horizontally disposed book rack, attached to each of the rack attachment members 16 as illustrated in
Contrary to the user of “slip-on” wire book racks, the racks 23 are securely attached to each chair 10 such that the racks 23 do not rattle and are not easily removed from the chair 10 by mischievous students.
As illustrated in
The stackable chairs 10 illustrated in
The stackable chair 10 of the invention is contrasted with stackable chairs of the prior art 110.
In a second aspect, the invention is a kit 40 comprising one or more racks 23 and at least three rack attachment members 16 for each rack 23. One embodiment of such a kit 40 is illustrated in
In an alternative embodiment (not shown), the kit 40 can further comprise a plurality of fasteners 28, such as nuts and bolts or rivots.
Having thus described the invention, it should be apparent that numerous structural modifications and adaptations may be resorted to without departing from the scope and fair meaning of the instant invention as set forth hereinabove and as described hereinbelow by the claims.
Claims
1. A stackable chair comprising:
- (a) a seating surface;
- (b) at least three legs disposed generally vertically below the seating surface, the at least three legs being disposed at an angle slightly less than 90° with respect to the vertical, such that the chair is capable of stacking onto an identical chair; and
- (c) a rack attachment member attached to each of the at least three legs, each rack attachment member comprising (i) a leg attachment portion attached to one of the at least three legs, and (ii) a rack attachment portion capable of reversibly securing a portion of a rack to one of the at least three legs below the seating surface.
2. The stackable chair of claim 1 further comprising a rack attached to each of the rack attachment members.
3. The stackable chair of claim 1 wherein the rack attachment portion defines a hollow continuous cylinder.
4. The stackable chair of claim 1 wherein the leg attachment portion defines a clamp having a first clamp member and a spaced apart second clamp member.
5. The stackable chair of claim 4 wherein the first clamp member and the second clamp member are attachable to one another by a single fastener.
6. A stackable chair comprising:
- (a) a seating surface;
- (b) four legs disposed generally vertical below the seating surface, the four legs being disposed at an angle slightly less than 90° with respect to the vertical, such that the chair is capable of stacking onto an identical chair;
- (c) a rack attachment member attached to each of the at least four legs, each rack attachment member comprising (i) a leg attachment portion attached to one of the at least four legs, and (ii) a rack attachment portion capable of reversibly securing a portion of a rack to one of the at least four legs below the seating surface; and
- (d) a rack attached to each of the rack attachment members;
- wherein the rack attachment portion defines a hollow continuous cylinder;
- wherein the leg attachment portion defines a clamp having a first clamp member and a spaced apart second clamp member; and
- wherein the first clamp member and the second clamp member are attachable to one another by a single fastener.
7. An attachment member comprising:
- (a) a rack attachment portion defining a hollow continuous cylinder with a proximal end and a distal end, the proximal end having an exterior surface;
- (b) a leg attachment portion defining a clamp, the clamp having a first clamp member and a second clamp member spaced apart from one another, the first and second clamp members being attachable to one another by one or more fasteners, the first clamp member having an edge sized and dimensioned to match the exterior surface of the proximal end of the rack attachment portion in such a way that the first clamp member supports the rack attachment portion when the first clamp member is attached to the second clamp member.
8. The attachment member of claim 7 wherein the second clamp member is integral with the rack attachment portion.
9. A method for shipping a plurality of stackable chairs to a destination, wherein each stackable chair comprises (i) a seating surface, and (ii) at least three legs disposed generally below the seat surface, the at least three legs being disposed at an angle slightly less than 90° with respect to the vertical, such that the chair is capable of stacking onto an identical chair, the method comprising:
- (a) stacking a plurality of the stackable chairs;
- (b) shipping the plurality of stackable chairs stacked in step (a) to the destination;
- (c) shipping to the destination a plurality of rack attachment members, each rack attachment member comprising (i) a leg attachment portion attachable to one of the at least three legs, and (ii) a rack attachment portion capable of reversibly securing a portion of a rack to one of the at least three legs below the seating surface; and
- (d) shipping to the destination a plurality of racks, each rack being capable of being attached to a chair by the rack attachment members.
10. The method of claim 9 wherein each rack attachment portion defines a hollow continuous cylinder and wherein each leg attachment portion defines a clamp having a first clamp member and a spaced apart second clamp member.
11. The method of claim 10 wherein each first clamp member has an edge sized and dimensioned to match the exterior surface of the proximal end of a rack attachment portion in such a way that each first clamp member supports a rack attachment portion when each first clamp member is attached to a second clamp member.
12. The method of claim 9 further comprising the step of attaching a rack to each of the stackable chairs using rack attachment members attached to each of the legs of each chair.
13. A kit comprising:
- (a) one or more racks suitable for attachment beneath the seating surface of a stackable chair, each rack having a center portion and at least three radiating prongs; and
- (b) at least three attachment members for each rack, each attachment member comprising: (i) a rack attachment portion defining a hollow continuous cylinder with a proximal end and a distal end, the proximal end having an exterior surface, the hollow continuous cylinder being sized and dimensioned to accept one of the radiating prongs; and (ii) a leg attachment portion defining a clamp, the clamp having a first clamp member and a second clamp member spaced apart from one another, the first and second clamp members being attachable to one another by one or more fasteners, the first clamp member having an edge sized and dimensioned to match the exterior surface of the proximal end of the rack attachment portion in such a way that the first clamp member supports the rack attachment portion when the first clamp member is attached to the second clamp member.
Type: Application
Filed: Sep 14, 2009
Publication Date: Mar 17, 2011
Inventors: Robert Mills (Torrance, CA), Glass Peter (Arroyo Grande, CA), Hui Matt (Monterey Park, CA), Lam Keen (Rowland Heights, CA)
Application Number: 12/558,759
International Classification: A47C 7/62 (20060101);