Patent US3710955A successfully refreshed from Google Patents.
US3710955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress handling apparatus
Assignee: Mathewson Corp
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Filing: 1970-12-04
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Granted: 1973-01-16
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Expires: 1990-12-04
Abstract
Abstract Mattress handling apparatus comprising a cradle having spaced parallel grids adapted to receive a mattress therebetween, said cradle being rotatable about a horizontal axis to present one open end in a position to receive the mattress and when the mattress is wholly contained to an inverted position to present the other open end to said position for discharge of the mattress. There are conveyor belts on the grids for moving the mattress onto the cradle and off the cradle and reversibly drivable mechanism for moving the grids toward and away from each other to clamp the mattress prior to turning and unclamp it after turning. The apparatus is adapted to be used in conjunction with mattress closing apparatus to receive a mattress assembly which has been sewn on one side, invert it, return it to the closing apparatus for sewing on the other side and finally to effect discharge of the completed mattress.
Inventors
- 👤 H Redman
- 👤 F Kalning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:20
CPC Classifications
D; D05; D05B; D05B11/00; D05B11/005; B; B65; B65G; B65G47/00; B65G47/22; B65G47/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
281 words
Mattress handling apparatus comprising a cradle, supports between which the cradle is mounted for rotation about a horizontal axis, a sheave fixed to one end of the cradle, a first motor operably connected to the sheave for effecting rotation of the cradle; screws mounted on the cradle having right and left threads, grid members mounted, respectively, on the right and left threads of the screws in spaced parallel relation between which a mattress is adapted to be placed, sprockets fixed to the screws, a chain entrained about the sprockets and a second reversible motor drivingly connected to the chain for moving the grids to and from each other to clamp and release a mattress situated between the grids; a shaft mounted at each end of each grid, pulleys mounted on said shafts, belts entrained about the pulleys at opposite ends of each grid, said belts constituting conveyor means on the grids extending lengthwise thereof, and means for effecting rotation of the shafts and hence the belts, on the one hand to draw a mattress between the grids and on the other hand to discharge it from between the grids, comprising a third motor drivingly connected to one of the shafts at one end of one of the grids, and means for drivingly connecting said one shaft to the shaft at the corresponding end of the other grid, comprising articulated links connected to one end of each of said latter shafts, sprockets mounted at the articulated ends of the links, and chains entrained about each respective pair of sprockets which comprise one of the sprockets on one of the shafts and one of the sprockets at the articulated ends of the links.
Claim 2
Dependent Claim
281 words
Mattress handling apparatus comprising a cradle, supports between which the cradle is mounted for rotation about a horizontal axis, a sheave fixed to one end of the cradle, a first motor operably connected to the sheave for effecting rotation of the cradle; screws mounted on the cradle having right and left threads, grid members mounted, respectively, on the right and left threads of the screws in spaced parallel relation between which a mattress is adapted to be placed, sprockets fixed to the screws, a chain entrained about the sprockets and a second reversible motor drivingly connected to the chain for moving the grids to and from each other to clamp and release a mattress situated between the grids; a shaft mounted at each end of each grid, pulleys mounted on said shafts, belts entrained about the pulleys at opposite ends of each grid, said belts constituting conveyor means on the grids extending lengthwise thereof, and means for effecting rotation of the shafts and hence the belts, on the one hand to draw a mattress between the grids and on the other hand to discharge it from between the grids, comprising a third motor drivingly connected to one of the shafts at one end of one of the grids, and means for drivingly connecting said one shaft to the shaft at the corresponding end of the other grid, comprising articulated links connected to one end of each of said latter shafts, sprockets mounted at the articulated ends of the links, and chains entrained about each respective pair of sprockets which comprise one of the sprockets on one of the shafts and one of the sprockets at the articulated ends of the links.
Claim 3
Dependent Claim
116 words
Mattress handling apparatus according to claim 1, wherein said first motor is operative to rotate the cradle to dispose first one end and then the other at said predetermined position, said third motor is operative when the one end is at said predetermined position to move the belts in a direction to draw the mattress between the grids and when the other end is in said predetermined position to move the belts in a direction to discharge the mattress from between the grids, and wherein said second motor is operative following movement of the mattress between the grids to effect clamping of the mattress and following inversion of the cradle to effect release of the mattress.
Claim 4
Dependent Claim
164 words
Mattress handling apparatus according to claim 2, comprising a first manually operable switch for initiating operation of said first motor to dispose the cradle with the one end at said predetermined positiOn, a second manually operable switch for initiating operation of said third motor to move the belts in a direction to draw the mattress between the grids, a limit switch operable by disposition of the mattress between the grids to stop said third motor and initiate operation of said second motor to effect clamping of the mattress, a second limit switch operable by clamping of the mattress to initiate operation of said first motor to invert the cradle, a third limit switch operable by inversion of the cradle to effect operation of said second motor to release the mattress and a fourth limit switch operable by disposition of the opposite end of said cradle at said predetermined position to initiate operation of said third motor to discharge the mattress from between the grids.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |