Patent US3582068A successfully refreshed from Google Patents.
US3582068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Channel-shaped balancing device
Assignee: Skrivrit AB
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Filing: 1968-10-10
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Granted: 1971-06-01
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Expires: 1988-10-10
Abstract
Abstract A balancing device comprising an elongated downwardly open channel-shaped member, end walls closing the ends of the channel, and a rod extending longitudinally in the channel between the end walls. The channel is turnably mounted on the rod; and support legs adapted to engage the ground are rigidly attached to the rod. The arrangement is such that the turning movement of the channel-shaped support member is limited in either direction about the rod.
Inventors
- 👤 Lennart Hallgren
- 👤 Orvar Rikardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:39
CPC Classifications
A; A63; A63B; A63B4/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
110 words
A balancing device comprising an elongated support member shaped as an inverted, downwardly open channel, opposed end walls mounted on the ends of the channel, each end wall including bearing means, rod means located in the inverted channel and operatively engaged in the said bearing means, support legs rigidly connected to the rod means and adapted to engage the ground, said support member being supported above the ground by means of the engagement of its end wall bearing means with said rod means, said support member being turnable about said rod means, and means for limiting the turning movement of the support member in either direction about said rod means.
Claim 2
Dependent Claim
110 words
A balancing device comprising an elongated support member shaped as an inverted, downwardly open channel, opposed end walls mounted on the ends of the channel, each end wall including bearing means, rod means located in the inverted channel and operatively engaged in the said bearing means, support legs rigidly connected to the rod means and adapted to engage the ground, said support member being supported above the ground by means of the engagement of its end wall bearing means with said rod means, said support member being turnable about said rod means, and means for limiting the turning movement of the support member in either direction about said rod means.
Claim 3
Dependent Claim
29 words
A balancing device according to claim 1 wherein the upper outer surface of said channel-shaped support member is generally cylindrical, the circumferential extent of said cylinder being approximately 120*.
Claim 4
Dependent Claim
42 words
A balancing device according to claim 2 wherein said legs are of such a height that when the legs are placed on the ground the height of the support member above the ground is substantially equal to the radius of said cylinder.
Claim 5
Dependent Claim
32 words
A balancing device according to claim 3 wherein said rod means comprises an elongated rod extending longitudinally within the channel and engaging one of said bearing means at each of its ends.
Claim 6
Dependent Claim
57 words
A balancing device according to claim 3 wherein said means for limiting movement comprises the height of the inside of the inverted shaped channel portion being sufficiently large so that the support member can turn about said rod and clear the legs and the travel of the support member being limited by its engagement with the ground.
Claim 7
Dependent Claim
32 words
A balancing device according to claim 3 wherein said means for limiting movement comprises laterally extending protrusions on the legs for limiting the turning movement of the support member about the rod.
Claim 8
Dependent Claim
111 words
A balancing device comprising an elongated support member shaped as an inverted, downwardly open channel, downwardly extending walls rigidly attached to the support member, at least some of the walls including bearing means, rod means located in the inverted channel and operatively engaged in the said bearing means, support legs rigidly connected to the rod means and adapted to engage the ground, said support member being supported above the ground by means of the engagement of its wall bearing means with said rod means said support member being turnable about said rod means, and means for limiting the turning movement of the support member in either direction about said rod means.
Claim 9
Dependent Claim
111 words
A balancing device comprising an elongated support member shaped as an inverted, downwardly open channel, downwardly extending walls rigidly attached to the support member, at least some of the walls including bearing means, rod means located in the inverted channel and operatively engaged in the said bearing means, support legs rigidly connected to the rod means and adapted to engage the ground, said support member being supported above the ground by means of the engagement of its wall bearing means with said rod means said support member being turnable about said rod means, and means for limiting the turning movement of the support member in either direction about said rod means.
Claim 10
Dependent Claim
29 words
A balancing device according to claim 7 wherein the upper, outer surface of said channel-shaped support member is generally cylindrical, the circumferential extent of said cylinder being approximately 120*.
Claim 11
Dependent Claim
42 words
A balancing device according to claim 8 wherein said legs are of such a height that when the legs are placed on the ground the height of the support member above the ground is substantially equal to the radius of said cylinder.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |