Patent US3574241A successfully refreshed from Google Patents.
US3574241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring and frame assembly particularly for box springs
Assignee: Hoover Group Inc
•
Filing: 1969-01-06
•
Granted: 1971-04-13
•
Expires: 1989-01-06
Abstract
Abstract A spring and frame assembly, particularly for box springs for beds, consisting of a plurality of main springs arranged crisscross fashion on a rectangular supporting frame and internal support springs supported on the frame and secured to the main springs. Each of the main springs has a resilient end portion movable between an upwardly extending position when not loaded and a downwardly compressed position when under load, and each of these end portions includes a pair of generally upright spacer bars that function to limit the magnitude of the downward movement of the main spring when under load.
Inventors
- 👤 Walter V Slominski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:44
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
188 words
A spring and frame assembly comprising a generally rectangular and substantially horizontal frame, a plurality of wire springs arranged crisscross fashion on said frame, each of said springs including a body portion disposed in a spaced relation above said frame and at least one resilient end portion extending between said body portion and said frame so as to support said body portion on said frame, said end portion including relatively inclined connecting bars which are relatively movable to enable compression and expansion of said end portion with a corresponding movement of said body portion toward and away from said frame, a pair of substantially upright spacer bars and a plurality of torsion bars connecting to said connecting bars and said spacer bars, a pair of said torsion bars being located at the upper ends of said spacer bars, said spacer bars being engageable with said frame to limit downward movement of said end portion toward said frame, and said body portion being engageable with at least one of said pair of said torsion bars in said end portion to limit movement of said body portion toward said frame.
Claim 2
Dependent Claim
188 words
A spring and frame assembly comprising a generally rectangular and substantially horizontal frame, a plurality of wire springs arranged crisscross fashion on said frame, each of said springs including a body portion disposed in a spaced relation above said frame and at least one resilient end portion extending between said body portion and said frame so as to support said body portion on said frame, said end portion including relatively inclined connecting bars which are relatively movable to enable compression and expansion of said end portion with a corresponding movement of said body portion toward and away from said frame, a pair of substantially upright spacer bars and a plurality of torsion bars connecting to said connecting bars and said spacer bars, a pair of said torsion bars being located at the upper ends of said spacer bars, said spacer bars being engageable with said frame to limit downward movement of said end portion toward said frame, and said body portion being engageable with at least one of said pair of said torsion bars in said end portion to limit movement of said body portion toward said frame.
Claim 3
Dependent Claim
59 words
A spring and frame assembly according to claim 1 wherein one of said torsion bars is disposed at the lower end of said end portion in engagement with said frame, and a substantially L-shape attaching foot integral with said one torsion bar, said foot terminating in an attachment bar which is inclined with respect to said one torsion bar.
Claim 4
Dependent Claim
50 words
A spring and frame assembly according to claim 1 wherein one of said torsion bars in said end portion is integral with and extends transversely of said body portion at One end thereof, said one torsion bar being of a reduced length relative to the others of said torsion bars.
Claim 5
Dependent Claim
36 words
A spring and frame assembly according to claim 3 wherein said body portion is substantially straight and said spacer bars are disposed in a spaced relation in a direction along the length of said body portion.
Claim 6
Dependent Claim
115 words
A spring and frame assembly according to claim 4 wherein one of said connecting bars extends downwardly and inwardly from one end of said reduced length torsion bar, another one of said torsion bars extends transversely from the inner end of said connecting bar, one of said spacer bars extends downwardly from said one torsion bar, another one of said torsion bars extends from the lower end of said one spacer bar in a substantially parallel relation with said one torsion bar, another one of said connecting bars extends outwardly from said other torsion bar, and the other one of said spacer bars extends downwardly relative to the outer end of said other connecting bar.
Claim 7
Dependent Claim
124 words
A spring comprising a wire member shaped to form a body portion having a substantially horizontal and substantially straight end section and a resilient end portion which extends downwardly from said end section, said end portion being movable between an expanded position and a compressed position, said end portion in said compressed position providing for movement of said end section downwardly relative to the position thereof in said expanded position, said end portion including upright spacer bars and torsion bars connected to the upper ends of said spacer bars and extending transversely of said end section at a position directly therebelow, and connecting bars in said end portion movable relative to each other to enable said movement of said end portion between said positions.
Claim 8
Dependent Claim
124 words
A spring comprising a wire member shaped to form a body portion having a substantially horizontal and substantially straight end section and a resilient end portion which extends downwardly from said end section, said end portion being movable between an expanded position and a compressed position, said end portion in said compressed position providing for movement of said end section downwardly relative to the position thereof in said expanded position, said end portion including upright spacer bars and torsion bars connected to the upper ends of said spacer bars and extending transversely of said end section at a position directly therebelow, and connecting bars in said end portion movable relative to each other to enable said movement of said end portion between said positions.
Claim 9
Dependent Claim
31 words
A spring according to claim 6 wherein said end portion terminates at the lower end thereof in a substantially horizontal attachment bar which is inclined with respect to said torsion bars.
Claim 10
Dependent Claim
101 words
A spring according to claim 6 wherein said end portion further includes a torsion bar at the upper end of said end portion, one of said connecting bars extending downwardly and inwardly from said upper end torsion bar at an angle of about 45* in said expanded position of said end portion, one of said spacer bars being located at the lower end of said one connecting bar, another one of said connecting bars extending outwardly from the lower end of said one spacer bar, and the other spacer bar being located adjacent the outer end of said other connecting bar.
Claim 11
Dependent Claim
51 words
A spring according to claim 6 wherein said end portion torsion bars are arranged in a vertically spaced relation with the uppermost one of said torsion bars being of a reduced length relative to the ones of said torsion bars therebelow and being located at the end of said end sections.
Claim 12
Dependent Claim
48 words
A spring according to claim 9 wherein said connecting bars are disposed in a common vertical plane and said spacer bars are disposed in a common vertical plane spaced from the plane of said connecting bars, said planes being located on opposite sides of said straight end section.
Claim 13
Dependent Claim
72 words
A spring according to claim 10 wherein said end portion is shaped so that one of said connecting bars extends downwardly and inwardly underneath said body portion and the other connecting bar is disposed below said one connecting bar, a pair of said torsion bars being located at the inner ends of said connecting bars, and one of said spacer bars being connected to and extended between said pair of torsion bars.
References Cited (Backward Citations)
US3286281A
Cited
US3487480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |