Patent US3826335A successfully refreshed from Google Patents.
US3826335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Personnel/load carrying system
Assignee: Individual
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Filing: 1973-02-01
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Granted: 1974-07-30
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Expires: 1993-02-01
Abstract
Abstract An apparatus system for moving personnel and/or other loads from one elevation point to another. The apparatus system includes a carrier traversing an inclined carrying line secured between higher and lower elevation points, a movable counterweight for counterbalancing weight of the carrier, a cable interconnecting the carrier and counterweight, sheaves coacting with the cable, and fluid power means for adjusting rate and direction of movement of the carrier along the carrying line, the carrier being automatically returnable to the upper elevation point if desired. Braking means are provided to stop the carrier in an emergency situation.
Inventors
- 👤 M Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:44
CPC Classifications
E; E21; E21B; E21B19/00; B; B66; B66B; B66B9/00; B66B9/06; B66C; B66C21/00; B66C21/02
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
193 words
A system for moving a load between higher and lower elevations, comprising: a. a carrying line inclined from and anchored between the higher and lower elevation points, b. carrier means for traversing the carrying line (a) to support the load being moved, c. movable counterweight means for counterbalancing weight of the carrier means (b), d. cable and sheave means interconnecting and providing coactIon between the carrier means (b) and the counterweight means (c), and e. fluid power means for adjusting rate and direction of movement of the carrier means (b) along the carrying line (a) , said fluid power means including, i. an upstanding, enclosed tubular member provided at its upper end with a stuffing box means for slidably and sealably receiving a cable passing into the upper end of said tubular member, ii. a piston member slidable within the tubular member (e) (i), iii. a cable interconnecting the counterweight means (c) and the piston (e) (ii), iv. sheave means coacting with the cable (e) (iii) for guiding said cable, v. fluid contained within the tubular member (e) (i), and vi. means for adjustably pressuring and directing flow of the fluid (e) (v).
Claim 2
Independent Claim
193 words
A system for moving a load between higher and lower elevations, comprising: a. a carrying line inclined from and anchored between the higher and lower elevation points, b. carrier means for traversing the carrying line (a) to support the load being moved, c. movable counterweight means for counterbalancing weight of the carrier means (b), d. cable and sheave means interconnecting and providing coactIon between the carrier means (b) and the counterweight means (c), and e. fluid power means for adjusting rate and direction of movement of the carrier means (b) along the carrying line (a) , said fluid power means including, i. an upstanding, enclosed tubular member provided at its upper end with a stuffing box means for slidably and sealably receiving a cable passing into the upper end of said tubular member, ii. a piston member slidable within the tubular member (e) (i), iii. a cable interconnecting the counterweight means (c) and the piston (e) (ii), iv. sheave means coacting with the cable (e) (iii) for guiding said cable, v. fluid contained within the tubular member (e) (i), and vi. means for adjustably pressuring and directing flow of the fluid (e) (v).
Claim 3
Dependent Claim
70 words
The system of claim 1 wherein the means (e) (vi) for adjustably pressuring and directing flow of the fluid (e) (v) includes, more specifically, aa. a pressurized fluid reservoir for the fluid, bb. a conduit providing fluid communication between the fluid reservoir (aa) and the tubular member (e) (i), and cc. valve means in the conduit (bb) for controlling pressure and direction of flow of fluid in said conduit (bb).
Claim 4
Dependent Claim
80 words
The system of claim 1 wherein the cable and sheave means includes, more specifically, i. a cable, one end of which engages the counterweight means (c) and the ther end of which is secured to the carrier means (b), and ii. two opposed sets of sheaves coacting with the cable (b) (ii), the number of sheaves in each set being proportional to the ratio desired of movement of the counterweight means (c) relative to traverse of the carrier means (b).
Claim 5
Dependent Claim
191 words
The system of claim 1 including, additionally, f. braking means mounted on the carrier means (b) coacting with the carrying line (a) and the cable and sheave means (b) such that slackening or severance of the cable and sheave means (b) causes engagement of the braking means with the carrying line (a) to bring the carrier means (b) to a stationary position with respect to the carrying line (a), said braking means including, i. a control lever journalled to the carrier means (b) so as to pivot in the vertical plane, the control lever serving to secure the cable means of the cable and sheave means (b) to the carrier means (b) by attachment of said cable means to one end of the control lever, ii. a friction plate secured to the other end of the control lever (f) (i) in juxtaposition to the carrying line (a), and iii. spring means secured between the carrier means (b) and the control lever (f) (i) so as to bias the friction plate (f) (ii) toward the carrying line (a) and into intimate contact therewith upon slacking or severance of the cable means (d).
Claim 6
Dependent Claim
31 words
The system of claim 5 including, additionally, a brake lever arm, one end of which is rigidly secured to control lever (f) (i) for manual operation of the braking means (f).
Claim 7
Dependent Claim
18 words
The system of claim 2 wherein, more particularly, the valve means (e) (vi) (cc) is a three-way valve.
Claim 8
Dependent Claim
27 words
The system of claim 3 wherein in the two opposed sets of sheaves (d) (ii), one set comprises two sheaves and the other set comprises three sheaves.
Claim 9
Dependent Claim
50 words
The system of claim 2 wherein, more particularly, the pressured fluid reservoir (e) (vi) (aa) comprises an upstanding tubular member oriented parallel to the tubular member (e) (ii), and the movable counterweight means (c) comprises a weight member supported on rollers between and for movement along both said tubular members.
Claim 10
Independent Claim
147 words
A system for moving a load between higher and lower elevations, comprising, a. a carrying line inclined from and anchored between the higher and lower elevation point, b. a carrier having rollers for engaging and traversing the carrying line (a) to support the load being moved, c. movable counterweight means at least as heavy as the carrier (b) for counterbalancing weight of the carrier means (b), d. a cable connected at one end tO the carrier (b) and at the other end engaging the movable counterweight means (c), e. two opposed sets of sheaves coacting with the cable (d), the number of sheaves in each set being proportional to the ratio desired of movement of the counterweight means (c) relative to traverse of the carrier (b), and f. fluid power means for adjusting rate and direction of movement of the carrier (b) along the carrying line (a).
Claim 11
Independent Claim
147 words
A system for moving a load between higher and lower elevations, comprising, a. a carrying line inclined from and anchored between the higher and lower elevation point, b. a carrier having rollers for engaging and traversing the carrying line (a) to support the load being moved, c. movable counterweight means at least as heavy as the carrier (b) for counterbalancing weight of the carrier means (b), d. a cable connected at one end tO the carrier (b) and at the other end engaging the movable counterweight means (c), e. two opposed sets of sheaves coacting with the cable (d), the number of sheaves in each set being proportional to the ratio desired of movement of the counterweight means (c) relative to traverse of the carrier (b), and f. fluid power means for adjusting rate and direction of movement of the carrier (b) along the carrying line (a).
Claim 12
Dependent Claim
105 words
The system of claim 9 wherein the fluid power means (f) includes, i. an upstanding, enclosed tubular member provided at its upper end with a stuffing box means for slidably and sealably receiving a cable passing into the upper end of said tubular member, ii. a piston member slidable within the tubular member (f) (i), iii. a cable interconnecting the counterweight means (c) and the piston member (f) (ii), iv. sheave means coacting with the cable (f) (iii) for guiding said cable, v. fluid contained within the tubular member (f) (i), and vi. means for adjustably presuring and directing flow of the fluid (f) (v).
Claim 13
Dependent Claim
68 words
The system of claim 10 wherein the means (f) (vi) for adjustably pressuring and directing flow of the fluid (f) (v) includes, more specifically, aa. a pressured fluid reservoir for the fluid, bb. a conduit providing fluid communication between the fluid reservoir (aa) and the tubular member (f) (i), and cc. valve means in the conduit (bb) for controlling pressure and direction of flow in said conduit (bb).
Claim 14
Dependent Claim
62 words
The system of claim 9 including, additionally, g. braking means mounted on the carrier (b) and coacting with the carrying line (a) and the cable (d) such that slacking or severance of the cable (d) causes engagement of the braking means with the carrying line (a) to bring the carrier (b) to a stationary position with respect to the carrying line (a).
Claim 15
Dependent Claim
119 words
The system of claim 12 wherein, more particularly, the braking means (g) includes, i. a control lever mounted on the carrier (b) so as to pivot in the vertical plane, the control lever serving to secure the cable (d) to the carrier (b) by attachment of said cable to one end of the control lever, ii. a friction plate secured to the other end of the control lever (g) (i) in juxtaposition to the carrying line (a), and iii. spring means secured between the carrier (b) and the control lever (g) (i) so as to bias the friction plate (g) (ii) toward the carrying line (a) and into intimate contact therewith upon slacking or severance of the cable (d).
Claim 16
Dependent Claim
32 words
The system of claim 13 including, additionally, a brake lever arm, one end of which is rigidly secured to the control lever (g) (i) for manual operation of the braking means (g).
Claim 17
Dependent Claim
19 words
The system of claim 9 including, additionally, means for releasably retaining the carrier (b) at the lower elevation point.
Claim 18
Dependent Claim
18 words
The system of claim 10 wherein, more particularly, the valve means (f) (vi) (cc) is a three-way valve.
Claim 19
Dependent Claim
25 words
The system of claim 9 wherein in the two opposed sets of sheaves (e), one set comprises two sheaves and the other comprises three sheaves.
Claim 20
Dependent Claim
50 words
The system of claim 11 wherein, more particularly, the pressured fluid reservoir (f) (vi) (aa) comprises an upstanding tubular member oriented parallel to the tubular member (e) (ii), and the movable counterweight means (c) comprises a weight member supported on rollers between and for movement along both said tubular members.
Claim 21
Independent Claim
335 words
A system for moving a load between higher and lower elevations, comprising, a. a carrying line inclined from and anchored between the higher and lower elevation points, b. a carrier having rollers for engaging and traversing the carrying line (a) to support the load being moved, c. movable counterweight means at least as heavy as the carrier (b) for counterbalancing weight of the carrier means (b), d. a cable connected at one end to the carrier (b), the other end engaging the movable counterweight means (c), e. two opposed sets of sheaves coacting with the cable (d), the number of sheaves in each set being proportional to the ratio desired of movement of the counterweight means (c) relative to traverse of the carrier (b), f. fluid power means for adjusting rate and direction of movement of the carrier (b) along the carrying line (a), said fluid power means more particularly including, i. an upstanding enclosed tubular member provided at its upper end with a stuffing box means for slidably and sealably receiving a cable passing into the upper end of said tubular member, ii a piston member slidable within the tubular member (i), iii. a cable interconnecting the counterweight means (c) and the piston (ii), iv. sheave means coacting with the cable (iii) for guiding said cable, v. fluid contained within the tubular member (i), and vi. means for adjustably pressuring the fluid (v) including, more specifically, aa. a pressured fluid reservoir, bb. a conduit providing fluid communication between the fluid reservoir (aa) and the tubular member (i), and cc. valve means in the conduit (bb) for controlling pressure and direction of flow of fluid in said conduit (bb), and g. braking means mounted on the carrier (b) and coacting with the carrying line (a) and the cable (d) such that slacking or severance of the cable (d) causes the braking means to engage with the carrying line (a) to bring the carrier (b) to a stationary position with respect to the carrying line (a).
Claim 22
Independent Claim
335 words
A system for moving a load between higher and lower elevations, comprising, a. a carrying line inclined from and anchored between the higher and lower elevation points, b. a carrier having rollers for engaging and traversing the carrying line (a) to support the load being moved, c. movable counterweight means at least as heavy as the carrier (b) for counterbalancing weight of the carrier means (b), d. a cable connected at one end to the carrier (b), the other end engaging the movable counterweight means (c), e. two opposed sets of sheaves coacting with the cable (d), the number of sheaves in each set being proportional to the ratio desired of movement of the counterweight means (c) relative to traverse of the carrier (b), f. fluid power means for adjusting rate and direction of movement of the carrier (b) along the carrying line (a), said fluid power means more particularly including, i. an upstanding enclosed tubular member provided at its upper end with a stuffing box means for slidably and sealably receiving a cable passing into the upper end of said tubular member, ii a piston member slidable within the tubular member (i), iii. a cable interconnecting the counterweight means (c) and the piston (ii), iv. sheave means coacting with the cable (iii) for guiding said cable, v. fluid contained within the tubular member (i), and vi. means for adjustably pressuring the fluid (v) including, more specifically, aa. a pressured fluid reservoir, bb. a conduit providing fluid communication between the fluid reservoir (aa) and the tubular member (i), and cc. valve means in the conduit (bb) for controlling pressure and direction of flow of fluid in said conduit (bb), and g. braking means mounted on the carrier (b) and coacting with the carrying line (a) and the cable (d) such that slacking or severance of the cable (d) causes the braking means to engage with the carrying line (a) to bring the carrier (b) to a stationary position with respect to the carrying line (a).
Claim 23
Dependent Claim
116 words
The system of claim 19, wherein, more particularly, the braking means (g) includes, i. a control lever mounted on the carrier (b) so as to pivot in the vertical plane, the control lever serving to secure the cable (d) to the carrier (b) by attachment of said cable to one end of the control lever, ii. a friction plate secured to the other end of the control lever (i) in juxtaposition to the carrying line (a), and iii. spring means secured between the carrier (b) and the control lever (i) so as to bias the friction plate (ii) toward the carrying line (a) and into intimate contact therewith upon slacking or severance of the cable (b).
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |