Patent US2957762A successfully refreshed from Google Patents.
US3775784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stretcher
Assignee: Individual
•
Filing: 1971-12-30
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Granted: 1973-12-04
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Expires: 1991-12-30
Abstract
Abstract A stretcher disposable under a prone body without moving or disturbing the body including a first frame upon which a sheet is wound carried upon a second frame about which an endless belt is wound. As the frames are pulled under the body, the sheet is unwound beneath the body with no longitudinal movement of the unwinding sheet with respect to the body or the ground.
Inventors
- 👤 C Fry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:14
CPC Classifications
A; A61; A61G; A61G1/00; A61G1/003
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
217 words
A stretcher consisting of three discreet sections the first section being a pallet or sheet of suitable strong and flexible material having many button holes along each of the two longer sides, a second section being a device having a multitude of rollers rotatably mounted on a flexible base plate onto which said first section can be wound to make a thin elongated roll, the resulting assembly of first and second sections being highly flexible, and when drawn along below a prone body resting on a supporting surface unrolls said pallet leaving it between said prone body and said supporting surface, a third section being a frame of approximately rectangular proportions with many protrusions spaced along both longer sides, said protrusions being so spaced as to be engageable by said button holes in said pallet so that said frame is usable to transport said pallet with said prone body thereon, and means for tensionning said first section, said tensionning means including a hand lever and two pawls in which the first acts as a non-return device and the second acts as an engageable drive link controllable from said hand lever, the two pawls co-operable to rotate said rotatable side of frame to apply and hold lateral tension through said protrusions and said button holes to said pallet.
Claim 2
Dependent Claim
217 words
A stretcher consisting of three discreet sections the first section being a pallet or sheet of suitable strong and flexible material having many button holes along each of the two longer sides, a second section being a device having a multitude of rollers rotatably mounted on a flexible base plate onto which said first section can be wound to make a thin elongated roll, the resulting assembly of first and second sections being highly flexible, and when drawn along below a prone body resting on a supporting surface unrolls said pallet leaving it between said prone body and said supporting surface, a third section being a frame of approximately rectangular proportions with many protrusions spaced along both longer sides, said protrusions being so spaced as to be engageable by said button holes in said pallet so that said frame is usable to transport said pallet with said prone body thereon, and means for tensionning said first section, said tensionning means including a hand lever and two pawls in which the first acts as a non-return device and the second acts as an engageable drive link controllable from said hand lever, the two pawls co-operable to rotate said rotatable side of frame to apply and hold lateral tension through said protrusions and said button holes to said pallet.
Claim 3
Dependent Claim
205 words
A stretcher consisting of three discreet sections the first section being a pallet or sheet of suitable strong and flexible material having many button holes along each of the longer sides, a second section being a device having a multitude of rollers rotatably mounted on a flexible base plate onto which said first section can be wound to make a thin elongated roll, the resulting assembly of first and second sections being highly flexible, and when drawn along below a prone body resting on a supporting surface unrolls said pallet leaving it between said prone body and said supporting surface, a third section being a frame of approximately rectangular proportions with many protrusions along both longer sides said protrusions being so spaced as to be engageable by said button holes in said pallet so that said frame is usable to transport said pallet with said prone body thereon said frame having on each corner thereof a support wheel assembly which can be swung away from the vertical supporting position in such a manner as to allow said frame to be lower toward supporting surface, a plurality of slots and a pawl to engage the slots, locking each support assembly in or out of support position.
Claim 4
Dependent Claim
205 words
A stretcher consisting of three discreet sections the first section being a pallet or sheet of suitable strong and flexible material having many button holes along each of the longer sides, a second section being a device having a multitude of rollers rotatably mounted on a flexible base plate onto which said first section can be wound to make a thin elongated roll, the resulting assembly of first and second sections being highly flexible, and when drawn along below a prone body resting on a supporting surface unrolls said pallet leaving it between said prone body and said supporting surface, a third section being a frame of approximately rectangular proportions with many protrusions along both longer sides said protrusions being so spaced as to be engageable by said button holes in said pallet so that said frame is usable to transport said pallet with said prone body thereon said frame having on each corner thereof a support wheel assembly which can be swung away from the vertical supporting position in such a manner as to allow said frame to be lower toward supporting surface, a plurality of slots and a pawl to engage the slots, locking each support assembly in or out of support position.
Claim 5
Dependent Claim
58 words
A stretcher according to claim 1 in which the transverse tension can be released gradually by said lever and pawls from said pallet and said frame can be disassociated from said pallet by unlinking said button holes from said protrusions with said prone body remaining on said pallet, supported on a suitable surface, unencumberred by said rectangular frame.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |