US3871036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Invalid transfer device
Assignee: Reed International Ltd
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Filing: 1973-07-06
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Granted: 1975-03-18
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Expires: 1993-07-06
Abstract
Abstract A patient transfer device comprises a belt connected at its ends to first and second take-up and let-out reels and in its extension from the first reel to the second reel passes over supporting and guiding means to define in turn an upper patient supporting portion and a lower ground engaging portion. Driving means are provided for selectively rotating each of said reels to provide two modes of operation, the course of the belt over the supporting and guiding means being such that in each of the two modes the belt is moving in the same direction relative to the ground over its upper patient supporting portion and its lower ground engaging portion. An auxiliary belt take up and let-out device is connected to the belt at a position between its upper patient supporting portion and its lower ground engaging portion, and can be selectively locked to enable the two modes of operation to be performed. Actuating means are provided for said auxiliary device and locking-means for locking said first reel so that third and fourth modes of operation are provided in which the belt movement is between the auxiliary device and the second reel so that the transfer device can track along with a patient on it.
Inventors
- 👤 David J Attenburrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:36
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/10; A61G7/1025; A61G7/1032; A61G2200/00; A61G2200/30; A61G2200/32
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
371 words
A patient transfer device comprising in combination a. an elongated belt which is wide enough to support a patient, b. a first take-up and let-out reel connected to one end of said belt, c. a second take-up and let-out reel connected to the other end of said belt, d. a plurality of supporting and guiding means, e. said belt being disposed around said plurality of supporting and guiding means in a back and forth manner so as to provide an upper patient supporting portion and a lower ground engaging portion, f. driving means associated with said first take-up and let-out reel, g. driving means associated with said second take-up and let-out reel, h. a third take-up and let-out device that engages said belt at a point between its upper patient supporting portion and its lower ground engaging portion, i. first locking means for selectively locking said third takeup and let-out device, j. second locking means for selectively locking said first takeup and let-out reel, whereby: 1. in a first mode of operation said first reel is driven so that it takes up the belt and the second reel lets out the belt, 2. in a second mode of operation the belt is taken up by the second reel and let out by the first reel, 3. the course of the belt over the supporting and guiding means being such that in each of the first and second modes the belt is moving in the same direction over its upper patient supporting portion and its lower ground engaging portion, 4. said third take-up and let-out device being locked by said first locking means during said first and second modes, 5. in a third mode of operation locking said second locking means and unlocking said first locking means so that when said third take-up and let-out device is actuated the belt will be let out by the second reel and the resulting slack taken up by said third take-up and let-out device, and 6. in a fourth mode of operation said second reel is driven to take up the belt and the third take-up and let-out device lets out the belt slack that it has taken up during the second mode of operation.
Claim 2
Dependent Claim
371 words
A patient transfer device comprising in combination a. an elongated belt which is wide enough to support a patient, b. a first take-up and let-out reel connected to one end of said belt, c. a second take-up and let-out reel connected to the other end of said belt, d. a plurality of supporting and guiding means, e. said belt being disposed around said plurality of supporting and guiding means in a back and forth manner so as to provide an upper patient supporting portion and a lower ground engaging portion, f. driving means associated with said first take-up and let-out reel, g. driving means associated with said second take-up and let-out reel, h. a third take-up and let-out device that engages said belt at a point between its upper patient supporting portion and its lower ground engaging portion, i. first locking means for selectively locking said third takeup and let-out device, j. second locking means for selectively locking said first takeup and let-out reel, whereby: 1. in a first mode of operation said first reel is driven so that it takes up the belt and the second reel lets out the belt, 2. in a second mode of operation the belt is taken up by the second reel and let out by the first reel, 3. the course of the belt over the supporting and guiding means being such that in each of the first and second modes the belt is moving in the same direction over its upper patient supporting portion and its lower ground engaging portion, 4. said third take-up and let-out device being locked by said first locking means during said first and second modes, 5. in a third mode of operation locking said second locking means and unlocking said first locking means so that when said third take-up and let-out device is actuated the belt will be let out by the second reel and the resulting slack taken up by said third take-up and let-out device, and 6. in a fourth mode of operation said second reel is driven to take up the belt and the third take-up and let-out device lets out the belt slack that it has taken up during the second mode of operation.
Claim 3
Dependent Claim
22 words
in a second mode of operation the belt is taken up by the second reel and let out by the first reel,
Claim 4
Dependent Claim
22 words
in a second mode of operation the belt is taken up by the second reel and let out by the first reel,
Claim 5
Dependent Claim
50 words
a transfer device as set forth in claim 1, wherein the belt at the forward end of its patient supporting portion which is the end that leads under a patient extends in front of and is no higher than the level of the adjacent ground engaging portion of the belt.
Claim 6
Dependent Claim
38 words
A transfer device as set forth in claim 1 wherein the supporting and guiding means for the patient supporting portion of the belt cause the latter portion to form a gentle ramp leading down to its forward extremity.
Claim 7
Dependent Claim
42 words
the course of the belt over the supporting and guiding means being such that in each of the first and second modes the belt is moving in the same direction over its upper patient supporting portion and its lower ground engaging portion,
Claim 8
Dependent Claim
42 words
the course of the belt over the supporting and guiding means being such that in each of the first and second modes the belt is moving in the same direction over its upper patient supporting portion and its lower ground engaging portion,
Claim 9
Dependent Claim
19 words
said third take-up and let-out device being locked by said first locking means during said first and second modes,
Claim 10
Dependent Claim
19 words
said third take-up and let-out device being locked by said first locking means during said first and second modes,
Claim 11
Dependent Claim
36 words
A transfer device as set forth in claim 1 wherein side frames between which the belt extends transversely are provided at their forward end with ploughs which extend below the adjacent ground engaging portion of belt.
Claim 12
Dependent Claim
49 words
A transfer device as set forth in claim 1, wherein the belt supporting and guiding means at the forward end of the transfer device form part of a nose portion which is hinged so that it can move upwardly and downwardly relatively to the remainder of the transfer device.
Claim 13
Dependent Claim
52 words
in a third mode of operation locking said second locking means and unlocking said first locking means so that when said third take-up and let-out device is actuated the belt will be let out by the second reel and the resulting slack taken up by said third take-up and let-out device, and
Claim 14
Dependent Claim
52 words
in a third mode of operation locking said second locking means and unlocking said first locking means so that when said third take-up and let-out device is actuated the belt will be let out by the second reel and the resulting slack taken up by said third take-up and let-out device, and
Claim 15
Dependent Claim
39 words
in a fourth mode of operation said second reel is driven to take up the belt and the third take-up and let-out device lets out the belt slack that it has taken up during the second mode of operation.
Claim 16
Dependent Claim
39 words
in a fourth mode of operation said second reel is driven to take up the belt and the third take-up and let-out device lets out the belt slack that it has taken up during the second mode of operation.
Claim 17
Dependent Claim
40 words
A transfer device as set forth in claim 1, wherein the belt supporting and guiding means include plate members extending behind the belt over its patient supporting and ground engaging portions and over whose surfaces the belt skids or slides.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |