US4037829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring construction
Assignee: Individual
•
Filing: 1976-03-05
•
Granted: 1977-07-26
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Expires: 1996-03-05
Abstract
Abstract A rail anchor and attachment assembly for securing the end of a sinuous spring band to a curved frame rail in a furniture frame. The anchor is a pin fabricated from heavy gauge wire. It comprises a vertical anchor leg seated against the back surface of a frame rail and depending from a horizontal attachment leg. An attachment hook on the free end of the attachment leg receives a spring band, a helical connector spring or some other form of band connector, to form an attachment assembly joining the band to the rail.
Inventors
- 👤 Lawton H. Crosby
- 👤 John L. Crosby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:29
CPC Classifications
A; A47; A47C; A47C31/00; A47C31/02; A47C31/04; A47C31/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
109 words
A rail attachment assembly comprising: a. a curved frame rail having a back surface, a top surface, and a front surface, and b. an anchor pin including an anchor leg seated against said back surface of said rail, a horizontal attachment extending from said anchor leg across the width of said rail, and an attachment hook extending inwardly from said front surface of said rail and connected to a normally arced sinuous spring band, c. the longitudinal axis of said attachment leg extending perpendicular to a tangent to the curvature of the rail and the longitudinal axis of the band extending at an angle to said attachment leg axis.
Claim 2
Dependent Claim
109 words
A rail attachment assembly comprising: a. a curved frame rail having a back surface, a top surface, and a front surface, and b. an anchor pin including an anchor leg seated against said back surface of said rail, a horizontal attachment extending from said anchor leg across the width of said rail, and an attachment hook extending inwardly from said front surface of said rail and connected to a normally arced sinuous spring band, c. the longitudinal axis of said attachment leg extending perpendicular to a tangent to the curvature of the rail and the longitudinal axis of the band extending at an angle to said attachment leg axis.
Claim 3
Dependent Claim
42 words
The rail attachment assembly of claim 1 further characterized in that: a. said attachment hook is formed downwardly at an angle of approximately 45 degrees from said attachment leg at a point in vertical alignment with said front surface of the rail.
Claim 4
Dependent Claim
24 words
The rail attachment assembly of claim 1 further characterized in that: a. said attachment leg is seated on said upper surface of said rail.
Claim 5
Dependent Claim
34 words
The rail attachment assembly of claim 1 further characterized in that: a. said attachment leg extends through a bore formed horizontally through said rail and is seated against the lowermost surface of said bore.
Claim 6
Dependent Claim
35 words
The rail attachment assembly of claim 4 further characterized in that: a. said attachment leg includes a segment formed so that it extends a predetermined distance transversely of the longitudinal axis of said attachment leg.
Claim 7
Dependent Claim
35 words
The rail attachment assembly of claim 3 further characterized in that: a. said attachment leg includes a segment formed so that it extends a predetermined distance transversely of the longitudinal axis of said attachment leg.
Claim 8
Dependent Claim
48 words
The rail attachment assembly of claim 6 further characterized in that: a. said anchor leg includes a segment formed so that it extends a predetermined distance transversely of the longitudinal axis of said anchor leg, b. said anchor leg segment being seated flush against the outer rail surface.
Claim 9
Dependent Claim
48 words
The rail attachment assembly of claim 5 further characterized in that: a. said anchor leg includes a segment formed so that it extends a predetermined distance transversely of the longitudinal axis of said anchor leg, b. said anchor leg segment being seated flush against the outer rail surface.
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) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |