US3901502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tilting suction device for lifting objects with flat top surfaces
Assignee: Individual
•
Filing: 1973-12-21
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Granted: 1975-08-26
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Expires: 1993-12-21
Abstract
Abstract A tilting suction device for lifting objects having a flat surface in which the bellows is peripherally pleated over its entire length; one diametrical half having an axial rigidity differing from that of the other diametrical half so that when evacuated, it will assume an angularly inclined condition to reorient the object being lifted and/or the pleated bellows is permanently inclined and is introduced to an object being lifted in an inclined condition and when evacuated assumes an inclined condition to reorient the object being lifted.
Inventors
- 👤 Hilmar Vits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:56
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/08; B65H3/0808; B65H3/0883; B66; B66C; B66C1/00; B66C1/02; B66C1/0212; B66C1/0231
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
81 words
A tilting device for lifting objects having flat top surfaces, comprising a liftable, inclinable suction cup connected with a nipple of a suction pipe, the suction cup being disposed at one end of a bellows having folds over its complete periphery, the other end of the bellows being attached to the nipple of the suction pipe, and the wall of the bellows comprising elastic material and the spring rigidity of the elastic material in opposed halves of the wall being different.
Claim 2
Dependent Claim
81 words
A tilting device for lifting objects having flat top surfaces, comprising a liftable, inclinable suction cup connected with a nipple of a suction pipe, the suction cup being disposed at one end of a bellows having folds over its complete periphery, the other end of the bellows being attached to the nipple of the suction pipe, and the wall of the bellows comprising elastic material and the spring rigidity of the elastic material in opposed halves of the wall being different.
Claim 3
Dependent Claim
88 words
A tilting device for lifting objects with flat top surfaces, in particular for sheets of paper, comprising a liftable, inclinable suction cup connected with a nipple of a suction pipe, the suction cup being connected to one end of a bellows having a straight central axis connected at its other end to the nipple of the suction pipe, over its complete periphery the said bellows having both folds and approximately the same axial rigidity, and the suction cup being inclined to the straight central axis of the bellows.
Claim 4
Dependent Claim
88 words
A tilting device for lifting objects with flat top surfaces, in particular for sheets of paper, comprising a liftable, inclinable suction cup connected with a nipple of a suction pipe, the suction cup being connected to one end of a bellows having a straight central axis connected at its other end to the nipple of the suction pipe, over its complete periphery the said bellows having both folds and approximately the same axial rigidity, and the suction cup being inclined to the straight central axis of the bellows.
Claim 5
Dependent Claim
90 words
A tilting device for lifting objects having flat top surfaces, comprising a liftable, inclinable suction cup connected with a nipple of a suction pipe, the suction cup being disposed at one end of a bellows having folds over its complete periphery, the other end of the bellows being attached to the nipple of the suction pipe, and two diametrically opposite halves of said bellows respectively having a different axial spring rigidity the wall of the bellows being of an elastic material and thicker on one half than on the other.
Claim 6
Dependent Claim
90 words
A tilting device for lifting objects having flat top surfaces, comprising a liftable, inclinable suction cup connected with a nipple of a suction pipe, the suction cup being disposed at one end of a bellows having folds over its complete periphery, the other end of the bellows being attached to the nipple of the suction pipe, and two diametrically opposite halves of said bellows respectively having a different axial spring rigidity the wall of the bellows being of an elastic material and thicker on one half than on the other.
Claim 7
Dependent Claim
31 words
A tilting device in accordance with claim 3, wherein the bellows is connected to a vacuum source through a throttle provided at the end of bellows opposite to the suction cup.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |