| Rocking chair and anti-skid base -> Monitor Keywords |
|
|
 
Rocking chair and anti-skid baseRocking chair and anti-skid base description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20080073958, Rocking chair and anti-skid base. Brief Patent Description - Full Patent Description - Patent Application Claims
FIELD OF THE INVENTION [0001]This invention relates to rocking chairs and, more particularly, to rocking chairs having rockers which contact channels or tracks in a base. BACKGROUND OF THE INVENTION [0002]Rocking chairs are typically susceptible to longitudinal and rotational movement during use. (As used herein, the term "longitudinal" will be used to mean the direction in which the chair is facing and, hence, the direction in which rocking takes place.) The movement is most noticeable, and annoying, when the user's feet are placed on a foot stool or other elevated object for comfort, and the chair is found to move toward and/or away from the object and/or to rotate away from that object after a few oscillations. This is particularly true on rugs and carpeting but also happens on non-carpeted surfaces, particularly such as hardwood floors. The result is that the user cannot comfortably rock for very long without repeatedly adjusting the chair's position or electing to forego the comfort of elevated feet. [0003]Although the sources of such longitudinal and rotational movement are not fully understood, the movement appears to arise from several sources. One source of movement appears to be the minimal surface contact made between the chair's rockers and the floor at any instant of time, resulting in minimum anti-skid friction. A second source of movement appears to be the user's body mechanics in that it appears that there is a rotational component to the rocking-inducing force, either owing to one side of the user's body being stronger than the other or to some non-symmetry in the person's body. Thirdly, it appears that the nap of the carpet applies a force against the rockers of the chair that tends to produce a displacing movement of the chair during the rocking movement, typically laterally. SUMMARY OF THE INVENTION [0004]The invention herein is directed to preventing substantial movement of the rocking chair during the rocking motion. In accordance with the invention, a rocking chair is utilized having a pair of transversely-spaced, generally longitudinally extending rockers that converge at a first angle. A base is provided having a pair of transversely-spaced generally longitudinally extending channels that converge at a second angle at least approximately the same as the first angle. The channels are positioned to underlie the rockers as the rocking chair is rocked. The transverse width of each channel is sufficiently wider than the transverse width of the respective rocker to accommodate the rocker within the channel during rocking motion of the chair, and is sufficiently narrower than the transverse width of the respective rocker to prevent substantial longitudinal movement of the rockers within the channels. [0005]Another aspect of this invention is a non-skid base for use with a rocking chair having a pair of transversely-spaced, generally longitudinally, extending rockers that converge at a first angle. The base comprises a pair of transversely-spaced, generally longitudinally extending channels that converge at a second angle at least approximately the same as the first angle, said channels underlying the rockers as the rocking chair is rocked. The transverse width of each channel is sufficiently wider than the transverse width of the respective rocker to accommodate the rocker within the channel during rocking motion of the chair, but sufficiently narrow to prevent substantial longitudinal movement of the rockers within the channels. [0006]These and other details concerning the invention will be described in greater detail below in the Description of the Preferred Embodiment, of which the Drawing is a part. BRIEF DESCRIPTION OF THE DRAWING [0007]A preferred embodiment of the invention will now be described in detail by way of example only with reference to the following drawings: [0008]FIG. 1 is a front perspective view of a rocking chair and base constructed n accordance with the invention; [0009]FIG. 2 is a top perspective view of a base constructed in accordance with the invention; [0010]FIG. 3 is a side perspective view of the rocking chair and base of FIG. 1; [0011]FIG. 4 is a top plan view of the base of FIG. 1; and [0012]FIG. 5 is a fragmentary top plan view in schematic of the pair of the rockers 10, 12 within the respective channels 14, 16 of FIG. 1. DESCRIPTION OF THE PREFERRED EMBODIMENT [0013]FIG. 1 is a perspective view of a rocking chair and non-skid base constricted in accordance with the invention. FIG. 3 is a side perspective view of the rocking chair and base of FIG. 1. As illustrated in these Figures, the rocking chair has a pair of transversely-spaced, generally longitudinally extending rockers 10, 12 that each extend from a front end 10a, 12a to a rear end 10b, 12b, with an arced bottom surface 10e, 12e that supports the chair for rocking movement in the conventional manner. [0014]As best illustrated in FIG. 5, the rockers 10, 12 converge at a first angle .theta..sub.1 towards the rear of the chair. Each rocker of the preferred embodiment forms an angle of approximately 5.degree. with the longitudinal axis 18 passing centrally between the rockers, wherein the term "longitudinal" is used to denote the direction in which the rocking chair faces, and the axis extends centrally between the rockers. Accordingly, the rockers mutually converge at an angle .theta..sub.1 of approximately 10.degree.. It will be apparent to those of ordinary skill in the art that other angles of convergence can be used without departing from the scope of the invention. Moreover, the rockers need not converge at the same angle with the longitudinal axis, although they typically do. The rockers can also converse towards the front of the chair instead of the rear. All of these variations are within the scope of the invention. [0015]As illustrated best in FIG. 3, the specific rockers employed in this embodiment have the following dimensions: [0016]Length (measured along its curved bottom surface 12e): 353/4 inches [0017]Width (W.sub.R): 2 inches [0018]Front end separation (S.sub.F) measured between facing sidewalls: 20 inches [0019]Back end separation (S.sub.B) measured between facing sidewalls: 14 inches Continue reading about Rocking chair and anti-skid base... Full patent description for Rocking chair and anti-skid base Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Rocking chair and anti-skid base patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Rocking chair and anti-skid base or other areas of interest. ### Previous Patent Application: Child seat Next Patent Application: Device for shortening brake activation reaction time Industry Class: Chairs and seats ### FreshPatents.com Support Thank you for viewing the Rocking chair and anti-skid base patent info. IP-related news and info Results in 0.18637 seconds Other interesting Feshpatents.com categories: Novartis , Pfizer , Philips , Polaroid , Procter & Gamble , 174 |
 * Protect your Inventions * US Patent Office filing 
PATENT INFO |
|
