Patent US4962847A successfully refreshed from Google Patents.
US4962847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid lift
Assignee: Cablelift Oil Corp
•
Filing: 1989-04-25
•
Granted: 1990-10-16
•
Expires: 2009-04-25
Abstract
Abstract A cable pulley transmission has a plurality of pulleys with flight receiving pockets, an endless cable trained about the pulleys, and a plurality of flights located at spaced intervals along the cable. The flights on the cable fit into the flight receiving pockets of the pulleys for transmitting motion between the pulleys and the cable. Each of the flights are formed by two half-sections that are mounted together about the cable. Such a transmission can be used as a lift for liquid. One pulley is located in a source of liquid and at least one pulley is located above the liquid source. The cable has an ascending section and a descending section. The flights are spaced to maintain a column of liquid surrounding the ascending cable section. When the liquid handled is of a lower viscosity than necessary for adhering to the flights and cable of the ascending section, a tube can be positioned about the ascending section to serve as a conduit for conveying liquid therethrough and to hold the pulley in the liquid source. At least one of the flights joins separate cable ends to form an endless cable.
Inventors
- 👤 George L. Pisors
- 👤 James T. Taoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:36
CPC Classifications
F; F04; F04B; F04B19/00; F04B19/08; F04B19/14; E; E21; E21B; E21B43/00; E21B43/12; E21B43/121
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
111 words
In a cable-pulley transmission having: a plurality of pulleys with flight receiving pockets; an endless cable trained about the pulleys; and a plurality of flights located at spaced intervals along the cable, said flights fitting into the flight receiving pockets of the pulley for transmitting motion between the pulleys and the cable; the improvement comprising each of said flights being formed by two half-sections that are welded together about the cable in direct gripping relationship therewith, the length of the cable gripped between two half-sections of a flight is substantially less than the flight length along the cable to minimize the restriction of the flight on the flexibility of the cable.
Claim 2
Dependent Claim
111 words
In a cable-pulley transmission having: a plurality of pulleys with flight receiving pockets; an endless cable trained about the pulleys; and a plurality of flights located at spaced intervals along the cable, said flights fitting into the flight receiving pockets of the pulley for transmitting motion between the pulleys and the cable; the improvement comprising each of said flights being formed by two half-sections that are welded together about the cable in direct gripping relationship therewith, the length of the cable gripped between two half-sections of a flight is substantially less than the flight length along the cable to minimize the restriction of the flight on the flexibility of the cable.
Claim 3
Dependent Claim
28 words
The cable-pulley transmission of claim 1 wherein, the length of cable gripped between two half-sections of a flight is less than one-fifth the flight length along the cable.
Claim 4
Dependent Claim
28 words
The cable-pulley transmission of claim 1 wherein, said flight half-sections have contact ridges located at central portions of the half-sections for gripping the cable between opposite contact ridges.
Claim 5
Dependent Claim
61 words
The cable-pulley transmission of claim 1 wherein, each of said flight half-sections have a planar side with a projection and an indentation relative to the planar side, said projection and indentation of one flight half-section being inter-fitted with a corresponding indentation and projection of the opposite half-section of the flight, said flight half-sections being welded together at the indentations and projections.
Claim 6
Dependent Claim
144 words
A lift for liquid comprising: a plurality of pulleys with flight receiving pockets, one pulley being located for positioning within a source of liquid and at least one pulley being located for positioning above the top of the liquid source; an endless cable trained about the pulleys, the cable having an ascending section and a descending section; and a plurality of flights located at spaced intervals along the cable for maintaining a column of viscous liquid surrounding said ascending cable section and for transmitting motion between the pulleys and the cable, each of the flights being formed by two half-sections mounted together about the cable in direct gripping relationship therewith, the length of cable gripped between two half-sections of a flight being substantially less than the flight length along the cable to minimize the restriction of the flight on the flexibility of the cable.
Claim 7
Dependent Claim
144 words
A lift for liquid comprising: a plurality of pulleys with flight receiving pockets, one pulley being located for positioning within a source of liquid and at least one pulley being located for positioning above the top of the liquid source; an endless cable trained about the pulleys, the cable having an ascending section and a descending section; and a plurality of flights located at spaced intervals along the cable for maintaining a column of viscous liquid surrounding said ascending cable section and for transmitting motion between the pulleys and the cable, each of the flights being formed by two half-sections mounted together about the cable in direct gripping relationship therewith, the length of cable gripped between two half-sections of a flight being substantially less than the flight length along the cable to minimize the restriction of the flight on the flexibility of the cable.
Claim 8
Dependent Claim
27 words
The lift of claim 5 wherein, the length of cable gripped between two half-sections of a flight is less than one-fifth the flight length along the cable.
Claim 9
Dependent Claim
28 words
The liquid lift of claim 5 wherein, said flight half-sections have contact ridges located at central portions of the half-sections for gripping the cable between opposite contact ridges.
Claim 10
Dependent Claim
22 words
The liquid lift of claim 5 wherein, said flight half-sections have a generally hemispherical shape with a groove for receiving the cable.
Claim 11
Dependent Claim
109 words
In a cable-pulley transmission having: a plurality of pulleys with flight receiving pockets; an endless cable trained about the pulleys; and a plurality of flights located at spaced intervals along the cable, said flights fitting into the flight receiving pockets of the pulley for transmitting motion between the pulleys and the cable; the improvement comprising each of said flights being formed by two half-sections that are welded together about the cable in direct gripping relationship therewith, the length of cable supported between two half-sections of a flight is less than the flight length along the cable to minimize the restriction of the flight on the flexibility of the cable.
Claim 12
Dependent Claim
109 words
In a cable-pulley transmission having: a plurality of pulleys with flight receiving pockets; an endless cable trained about the pulleys; and a plurality of flights located at spaced intervals along the cable, said flights fitting into the flight receiving pockets of the pulley for transmitting motion between the pulleys and the cable; the improvement comprising each of said flights being formed by two half-sections that are welded together about the cable in direct gripping relationship therewith, the length of cable supported between two half-sections of a flight is less than the flight length along the cable to minimize the restriction of the flight on the flexibility of the cable.
Claim 13
Dependent Claim
119 words
A lift for liquid comprising: a plurality of pulleys with flight receiving pockets, one pulley being located within a source of liquid and at least one pulley being located above the top of the liquid source; an endless cable trained about the pulleys, said cable having an ascending section and a descending section; a plurality of flights located at spaced intervals along the cable for maintaining a column of liquid surrounding the ascending cable section and for transmitting motion between the pulleys and the cables; and an arm depending from the top of the liquid source for holding down the pulley located within the source of liquid, said arm being a tube surrounding the ascending section of the cable.
Claim 14
Dependent Claim
119 words
A lift for liquid comprising: a plurality of pulleys with flight receiving pockets, one pulley being located within a source of liquid and at least one pulley being located above the top of the liquid source; an endless cable trained about the pulleys, said cable having an ascending section and a descending section; a plurality of flights located at spaced intervals along the cable for maintaining a column of liquid surrounding the ascending cable section and for transmitting motion between the pulleys and the cables; and an arm depending from the top of the liquid source for holding down the pulley located within the source of liquid, said arm being a tube surrounding the ascending section of the cable.
Claim 15
Independent Claim
72 words
A method of forming a flight about a cable comprising the steps of: positioning two flight half-sections having projections and indentations about the cable so that the projections are aligned to interfit with the indentations, compressing the flight half-sections into gripping engagement with the cable and interfitting relationship between the projections and indentations, and welding the flight half-sections at the interfitted projections and indentations by applying opposite electrodes to the flight half-sections.
Claim 16
Independent Claim
72 words
A method of forming a flight about a cable comprising the steps of: positioning two flight half-sections having projections and indentations about the cable so that the projections are aligned to interfit with the indentations, compressing the flight half-sections into gripping engagement with the cable and interfitting relationship between the projections and indentations, and welding the flight half-sections at the interfitted projections and indentations by applying opposite electrodes to the flight half-sections.
Claim 17
Dependent Claim
143 words
A lift for liquid comprising: a plurality of pulleys with flight receiving pockets, one pulley being located for positioning within a source of liquid and at least one pulley being located for positioning above the top of the liquid source; an endless cable trained about the pulleys, the cable having an ascending section and a descending section; and a plurality of flights located at spaced intervals along the cable for maintaining a column of viscous liquid surrounding said ascending cable section and for transmitting motion between the pulleys and the cable, each of said flights are formed by two half-sections mounted together about the cable in direct gripping relationship therewith, the length of cable supported between two half-sections of a flight is less than the flight length along the cable to minimize the restriction of the flight on the flexibility of the cable.
Claim 18
Dependent Claim
143 words
A lift for liquid comprising: a plurality of pulleys with flight receiving pockets, one pulley being located for positioning within a source of liquid and at least one pulley being located for positioning above the top of the liquid source; an endless cable trained about the pulleys, the cable having an ascending section and a descending section; and a plurality of flights located at spaced intervals along the cable for maintaining a column of viscous liquid surrounding said ascending cable section and for transmitting motion between the pulleys and the cable, each of said flights are formed by two half-sections mounted together about the cable in direct gripping relationship therewith, the length of cable supported between two half-sections of a flight is less than the flight length along the cable to minimize the restriction of the flight on the flexibility of the cable.
References Cited (Backward Citations)
US331562A
Cited
US587124A
Cited
US636138A
Cited
US930465A
Cited
US1481735A
Cited
US1558490A
Cited
US1703963A
Cited
US1769336A
Cited
CH372882A
Cited
US3289593A
Cited
US3774685A
Cited
US3993184A
Cited
GB1447169A
Cited
US4197938A
Cited
US4089784A
Cited
US4552220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |