US3743352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radial rhythmic chair
Assignee: Individual
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Filing: 1971-08-20
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Granted: 1973-07-03
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Expires: 1991-08-20
Abstract
Abstract A chair which moves forwardly and rearwardly in a rhythmic manner on a radius whose center of rotation is located on or near the floor upon which the chair is resting. The chair has a restraint means which prevents the chair from moving forwardly and rearwardly beyond preselected points on the arc described by the radius. The restraint means consists of either flexible members or rigid members pivotally connected and one or two springs which bias the members in a manner to prevent them from assuming a position along a straight line.
Inventors
- 👤 C Kallander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:25
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/02; A47C3/021
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
177 words
A radial rhythmic chair comprising: a. a seat for receiving a person; b. a base extending beneath said seat adapted for contact with a floor; c. a frame connected to and supporting said seat and being movable between a forward and rearward position and including a leg mounted on said base for rotational movement of said frame and seat about a pivot point positioned on or in close proximity to the floor; and d. means connected to said base and said frame for restraining forward and rearward motion of said seat and frame beyond preselected points having, 1. a first member having two parts movable to an angular relationship connected to said base and connected at its other end to said frame at a point above said base connection, 2. biasing means connected to said first member at a point between its ends and operatively connected to said chair at a point so that when said chair is rotated the biasing means will increase its biasing force as the first member more nearly approaches a straight line.
Claim 2
Dependent Claim
177 words
A radial rhythmic chair comprising: a. a seat for receiving a person; b. a base extending beneath said seat adapted for contact with a floor; c. a frame connected to and supporting said seat and being movable between a forward and rearward position and including a leg mounted on said base for rotational movement of said frame and seat about a pivot point positioned on or in close proximity to the floor; and d. means connected to said base and said frame for restraining forward and rearward motion of said seat and frame beyond preselected points having, 1. a first member having two parts movable to an angular relationship connected to said base and connected at its other end to said frame at a point above said base connection, 2. biasing means connected to said first member at a point between its ends and operatively connected to said chair at a point so that when said chair is rotated the biasing means will increase its biasing force as the first member more nearly approaches a straight line.
Claim 3
Dependent Claim
47 words
biasing means connected to said first member at a point between its ends and operatively connected to said chair at a point so that when said chair is rotated the biasing means will increase its biasing force as the first member more nearly approaches a straight line.
Claim 4
Dependent Claim
47 words
biasing means connected to said first member at a point between its ends and operatively connected to said chair at a point so that when said chair is rotated the biasing means will increase its biasing force as the first member more nearly approaches a straight line.
Claim 5
Dependent Claim
112 words
A radial chair as described in claim 1 wherein said restraining means comprises: a. a first member attached to the front of said base and extending upwardly and rearwardly; b. a second member attached to the rear portion of said base and to the other end of said first member; c. a third member attached to the intersection point of said first and second members and extending upwardly to an attachment with said frame, and d. resilient means connected to a point on said third member and said frame biasing said third member to prevent it from assuming a straight line in the forward and rearward positions of said seat and frame.
Claim 6
Dependent Claim
80 words
A radial chair as described in claim 2 including: a. said third member being positioned in relation to said first member so as to always form less than a straight line relationship therewith when said frame and seat are in the extreme rearward position; and b. said third member being positioned in relation to said second member so as to always form less than a straight line relationship therewith when said frame and seat are in the extreme forward position.
Claim 7
Dependent Claim
145 words
A radial chair as described in claim 1 wherein said restraining means comprises : a. a first member pivotally connected to the forward end of said base and pivotally connected to said frame above said base, and said first member having a pivot point between said pivotal attachment points; b. a second member pivotally connected to the rear portion of said base and pivotally connected to said frame above said base, said second member having a pivot point between said pivotal attachment points; c. resilient means connected to the pivotal points on said first and second members biasing the parts of each of said first and second member to an angular relationship; d. said first member being positioned to prevent rotation of said frame beyond said rearward position; and e. said second member being positioned to prevent rotation of said frame beyond said forward position.
Claim 8
Dependent Claim
140 words
A radial chair as described in claim 1 wherein said restraining means comprises: a. a first member having an end pivotally connected to the forward end of said base and the other end pivotally connected to said frame above said base, said first member having a pivoted point between its ends; b. biasing means connected to the pivot point of said first member and to said frame, said biasing means biasing said first member so that the parts of said first member always form an angular relationship one to the other; c. a flexible second member connected to the rear portion of said base and connected to a portion of said frame above said base, and d. tensioning means connected to space points on said second member between the end connections drawing the ends of said member toward one another.
Claim 9
Dependent Claim
106 words
A radial chair as described in claim 1 wherein said restraining means comprises: a. a first member pivotally connected to the forward end of said base and a pivot point between its ends; b. a second member pivotally connected to the rear portion of said base and having a pivot point between its ends; c. a third member pivotally connected to said frame above said base and to the free ends of said first and second members; and d. biasing means connected to the pivot points of said first and second members biasing the respective parts of said first and second members into an angular relationship.
Claim 10
Dependent Claim
134 words
A radial chair as described in claim 1 wherein said restraining means comprises; a. a first rigid member pivotally connected to said forward portion of said base; b. a second rigid member pivotally connected to the other end of said first member and pivotally connected to said frame above said base; c. a third rigid member pivotally connected to the rear portion of said base; d. a fourth rigid mdmber pivotally connected to the other end of said third member and pivotally connected to said frame above said base; e. spring means connected to the pivotal connection of said first and second member biasing said members to an angular relationship; and f. spring means connected to the pivotal connection of said third member and said fourth member biasing said members to an angular relationship.
Claim 11
Dependent Claim
67 words
A radial chair as described In claim 1 wherein said restraint means comprises: a. a first member having two parts movable to an angular relationship connected to said base and connected at its other end to said frame at a point above said base connection; b. a spring connection to said first member and operatively connected to said chair biasing said first member to an angular relationship.
Claim 12
Dependent Claim
154 words
A radial chair as described in claim 1 wherein said restraining means comprises: a first rigid member pivotally connected to said forward portion of said base; b. a second rigid member pivotally connected to the other end of said first member; c. a third rigid member pivotally connected to said frame above said base and pivotally connected to the free end of said second member; d. a fourth rigid member pivotally connected to the rear end of said base and extending upwardly and forwardly; e. a fifth rigid member pivotally connected to the upward extending end of said fourth member, and pivotally connected to the upper end of said second member; f. spring means connected to the pivot connection of said first and second members biasing said members to an angular relationship; and g. spring means connected to the pivotal connection of said fourth and fifth members biasing said members to an angular relationship.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |