US3863358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leveling device having integral self-lock feature
Assignee: Individual
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Filing: 1974-03-05
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Granted: 1975-02-04
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Expires: 1994-03-05
Abstract
Abstract A device for use in conjunction with a conventional garden hose to provide an improved leveling instrument having integral locking means. The leveling device comprises a tube of material which is flexible to enable folding of the tube upon itself without breakage thereof. The end of each tube is cut in a manner which provides a secure and easy to operate locking device when the end of the tube is folded upon itself. The locking device is an integral part of the end of the tube and locks onto that portion of the tube over which it is folded.
Inventors
- 👤 Sr Thomas K Phares
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:41
CPC Classifications
G; G01; G01C; G01C5/00; G01C5/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
102 words
In a leveling system having a pair of flexible tubes, each of said pair of tubes having a free end and an end coupled to a hose at opposite ends of said hose comprising; each of said pair of tubes having a cut portion extending in the form of a helix from its free end to a point remote therefrom for forming a locking position when each of said pair of tubes is folded upon itself, the said locking portion may be wound around the section of the tube upon which it is folded to hold said tube in said folded position.
Claim 2
Dependent Claim
102 words
In a leveling system having a pair of flexible tubes, each of said pair of tubes having a free end and an end coupled to a hose at opposite ends of said hose comprising; each of said pair of tubes having a cut portion extending in the form of a helix from its free end to a point remote therefrom for forming a locking position when each of said pair of tubes is folded upon itself, the said locking portion may be wound around the section of the tube upon which it is folded to hold said tube in said folded position.
Claim 3
Dependent Claim
19 words
The leveling system recited in claim 1, wherein each of said pair of tubes compreses a flexible transparent material.
Claim 4
Dependent Claim
14 words
The leveling system recited in claim 2, wherein said material is a plastic material.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |