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US4786106A Expired / Lapsed US ⏱️ 0.0 years remaining

Rocking chair construction and method of making same

Assignee: US Bank NA
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Filing: 1987-05-11
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Granted: 1988-11-22
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Expires: 2007-05-11
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Abstract

Abstract A rocking chair has an aluminum frame chair portion that is mounted to a base by a pair of coil springs that provide rocking action to the chair. The springs are fixedly attached to the base and each spring has an outwardly extending portion that is attached to the seat portion by extending into a passage of the chair portion. The outwardly extending portion has a notch, and a set screw extends into the passage engaging the notch to retain the portion within the passage, preventing the possibility of the chair portion becoming separated from the base.

Inventors

  • 👤 Donald L. Bottemiller

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 23:02
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/02; A47C3/025; A47C3/0252; A47C7/00; A47C7/36; A47C7/40; A47C7/44; A47C7/443; A47C7/444; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7041

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 179 words
An improved rocking chair construction having a seat portion, a ground-engaging base and a pair of coil springs attaching the base to the chair portion and for providing rocking action to the chair, the improvement comprising: the chair portion having at least two tubular ends disposed proximate a lower portion thereof, each tubular end having a passage; each coil spring having an outwardly-extending member having a diameter equal to or substantially less than the passage and extending into one of the passages, each outwardly-extending member having a notch defined by first and second spaced axially apart shoulders; and first and second set screws threadably engaging each tubular end, the first set screw having an end portion disposed between the first and second spaced axially apart shoulders for engagement of the shoulders to define the axial travel of the tubular end portions with respect to the outwardly-extending member of the coil springs, and the second set screw having an end frictionally engaging the coil spring to retain the coil spring in a fixed position with respect to the tubular member.
Claim 2
Dependent Claim 179 words
An improved rocking chair construction having a seat portion, a ground-engaging base and a pair of coil springs attaching the base to the chair portion and for providing rocking action to the chair, the improvement comprising: the chair portion having at least two tubular ends disposed proximate a lower portion thereof, each tubular end having a passage; each coil spring having an outwardly-extending member having a diameter equal to or substantially less than the passage and extending into one of the passages, each outwardly-extending member having a notch defined by first and second spaced axially apart shoulders; and first and second set screws threadably engaging each tubular end, the first set screw having an end portion disposed between the first and second spaced axially apart shoulders for engagement of the shoulders to define the axial travel of the tubular end portions with respect to the outwardly-extending member of the coil springs, and the second set screw having an end frictionally engaging the coil spring to retain the coil spring in a fixed position with respect to the tubular member.
Claim 3
Dependent Claim 26 words
The chair construction of claim 1 wherein the chair portion is made of aluminum or an aluminum alloy and the coil springs are made of steel.
Claim 4
Dependent Claim 18 words
The chair construction of claim 2 wherein each tubular end has a wall thickness of approximately 0.0900 inches.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-11-22 1992-05-23 1992-11-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-11-22 1996-05-23 1996-11-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-11-22 2000-05-23 2000-11-22 $7700.00 Window Closed / Lapsed

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