US3580570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable trampoline
Assignee: Individual
•
Filing: 1968-06-11
•
Granted: 1971-05-25
•
Expires: 1988-06-11
Abstract
Abstract Two U-shpaed, trussed end frames hingedly connected together at their terminal extremities by straight, trussed side frames so that the end frames may be folded over the side frames for storage or opened out into the plane of the side frames to form an open, rectangular, peripheral bed frame which tensionally supports a conventional trampoline bed. Foldable leg elements hingedly mounted below said side frames for supporting the latter from the floor and foldable leg-bracing elements hingedly mounted below said end frames for maintaining said leg elements in the proper supporting positions, said frames being covered by cushioned deck pads which form a deck-way completely about said trampoline bed.
Inventors
- 👤 Robert M Fenner
- 👤 Donald E Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:07
CPC Classifications
A; A63; A63B; A63B71/00; A63B71/0036; A63B5/00; A63B5/11; A63B71/02; A63B71/023; A63B2071/025; A63B21/00; A63B21/02; A63B21/023; A63B2210/00; A63B2210/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
156 words
Means for supporting a foldable, elongated trampoline bed in a tensed position for use comprising: a. two U-shaped end frames positioned with their open sides facing each other; b. two straight side frames positioned between and hingedly connected to the terminals of the two end frames and spacing the latter apart to form a closed, elongated, foldable, peripheral bed frame; c. tension springs connected to and extending inwardly from said bed frame to said bed and maintaining the latter under constant tension, said end frames and said side frames each comprising; d. an inner tube and an outer tube fixedly positioned side-byside in a horizontal plane in fixed parallel, spaced-apart relation and conforming to the contour of their respective frames, said tension springs being connected to said inner tube; and e. a truss element fixedly positioned between and in the plane of said parallel tubes and being permanently and fixedly attached to both at spaced intervals.
Claim 2
Dependent Claim
156 words
Means for supporting a foldable, elongated trampoline bed in a tensed position for use comprising: a. two U-shaped end frames positioned with their open sides facing each other; b. two straight side frames positioned between and hingedly connected to the terminals of the two end frames and spacing the latter apart to form a closed, elongated, foldable, peripheral bed frame; c. tension springs connected to and extending inwardly from said bed frame to said bed and maintaining the latter under constant tension, said end frames and said side frames each comprising; d. an inner tube and an outer tube fixedly positioned side-byside in a horizontal plane in fixed parallel, spaced-apart relation and conforming to the contour of their respective frames, said tension springs being connected to said inner tube; and e. a truss element fixedly positioned between and in the plane of said parallel tubes and being permanently and fixedly attached to both at spaced intervals.
Claim 3
Dependent Claim
49 words
Means for supporting a trampoline bed as described in claim 1 in which the truss element comprises: a. a continuous rod having an elongated zigzag contour positioned in a flat plane between said tubes, the apexes of the zigs and zags contacting and being welded to both said tubes.
Claim 4
Dependent Claim
25 words
Means for supporting a trampoline bed as described in claim 2 having: a. an elongated pad-supporting plate supported by said truss element between said tubes.
Claim 5
Dependent Claim
32 words
Means for supporting a trampoline bed as described in claim 2 having: a. a flat, elongated pad supported on the inner and outer tubes in fixed horizontal relation with both said tubes.
Claim 6
Dependent Claim
205 words
Means for supporting an elongAted trampoline bed in a tensed position for use comprising: a. two U-shaped end frames positioned with their open sides facing each other; b. two straight side frames positioned between and hingedly connected to the terminals of the two end frames and spacing the latter apart to form a closed, elongated, foldable, peripheral bed frame; c. tension springs connected to and extending inwardly from said bed frame to said bed and maintaining the latter under constant tension; d. foldable supporting means hingedly mounted at the opposite extremities of each of said side straight frames and supporting the latter and the inner hingedly connected terminals of the U-shaped end frames from the floor; e. a supporting element suspended from each of said U-shaped end frames and supporting the outer portion of the latter from the floor; f. said U-shaped end frames and said straight side frames comprising an inner tube and an outer tube fixedly positioned side-by-side in a fixed horizontal plane in parallel, spaced-apart relation and conforming to the contour of their respective frames; and g. a truss element positioned between and in the plane of said parallel tubes and being permanently and fixedly attached to both tubes at spaced intervals.
Claim 7
Dependent Claim
205 words
Means for supporting an elongAted trampoline bed in a tensed position for use comprising: a. two U-shaped end frames positioned with their open sides facing each other; b. two straight side frames positioned between and hingedly connected to the terminals of the two end frames and spacing the latter apart to form a closed, elongated, foldable, peripheral bed frame; c. tension springs connected to and extending inwardly from said bed frame to said bed and maintaining the latter under constant tension; d. foldable supporting means hingedly mounted at the opposite extremities of each of said side straight frames and supporting the latter and the inner hingedly connected terminals of the U-shaped end frames from the floor; e. a supporting element suspended from each of said U-shaped end frames and supporting the outer portion of the latter from the floor; f. said U-shaped end frames and said straight side frames comprising an inner tube and an outer tube fixedly positioned side-by-side in a fixed horizontal plane in parallel, spaced-apart relation and conforming to the contour of their respective frames; and g. a truss element positioned between and in the plane of said parallel tubes and being permanently and fixedly attached to both tubes at spaced intervals.
Claim 8
Dependent Claim
44 words
Means for supporting a trampoline bed as described in claim 5 in which the truss element comprises: a. a continuous rod having an elongated zigzig contour positioned between said tubes, the apexes of the zigs and zags contacting and being welded to said tubes.
Claim 9
Dependent Claim
25 words
Means for supporting a trampoline bed as described in claim 5 having: a. an elongated pad-supporting plate supported by said truss element between said tubes.
Claim 10
Dependent Claim
40 words
Means for supporting a trampoline bed as described in claim 7 having: a. a flat, elongated pad supported on and covering each frame and substantially contacting each other at their extremities to form a continuous, peripheral walkway about said bed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |