Patent US4149469A successfully refreshed from Google Patents.
US4149469A
Expired / Lapsed
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Log braking and stabilizing system for log flume ride
Assignee: Six Flags Inc
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Filing: 1977-10-03
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Granted: 1979-04-17
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Expires: 1997-10-03
Abstract
Abstract A braking and stabilizing system for a boat in a water channel, including boat lifting apparatus in the water channel engageable with the bottom of the boat, and including inflatable bags connected to the boat lifting apparatus for moving same upwardly to lift the boat while stabilizing same.
Inventors
- 👤 Alfred Bigler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:09
CPC Classifications
A; A63; A63G; A63G3/00; Y; Y10; Y10S; Y10S414/00; Y10S414/13
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
66 words
In a braking and stabilizing system for a boat in a water channel, the combination of: (a) boat lifting means in the water channel engageable with the bottom of the boat; (b) first inflatable flexible bag means connected to said boat lifting means for positively moving same upwardly; and (c) second inflatable flexible bag means connected to said boat lifting means for positively moving same downwardly.
Claim 2
Dependent Claim
66 words
In a braking and stabilizing system for a boat in a water channel, the combination of: (a) boat lifting means in the water channel engageable with the bottom of the boat; (b) first inflatable flexible bag means connected to said boat lifting means for positively moving same upwardly; and (c) second inflatable flexible bag means connected to said boat lifting means for positively moving same downwardly.
Claim 3
Dependent Claim
58 words
A system according to claim 1 including two pairs of lifting arms pivotally connected to said base and to said boat lifting means, said first inflatable flexible bag means being connected to one of said pairs of lifting arms and said second inflatable flexible bag means being connected to the other of said pairs of said lifting arms.
Claim 4
Dependent Claim
25 words
A system as set forth in claim 2 wherein said boat lifting means, said base and said pairs of lifting arms form a parallelogram linkage.
References Cited (Backward Citations)
US665765A
Cited
US1037958A
Cited
US3114332A
Cited
US3404635A
Cited
US3317004A
Cited
US3730366A
Cited
SU463571A1
Cited
US3828688A
Cited
US3830161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |