US4389064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gripping device operating by suction
Assignee: S A JOULIN SEMA ZONE INDUSTRIELLE 91150 ETAMPES
•
Filing: 1981-11-24
•
Granted: 1983-06-21
•
Expires: 2001-11-24
Abstract
Abstract The invention relates to suction prehension devices without flap valves. In particular, it relates to a suction prehension device without flap valve of the type including a case (1) connected to a suction cluster and whose base (5) is constituted of a perforated plate having on its exterior face a layer of porous material (3), such as a plastic material foam having, facing the perforations of the said plate, openings (4,6) passing through it from one side to the other, characterized in that the internal surfaces of the openings (4,6) is covered by a sealing or semi-permeable layer (12). Preferably, the sealing or semi-permeable layer (12) is constituted of a bituminous or rubbery coating.
Inventors
- 👤 Stanislas G. L. Laverriere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:00
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/02; B66C1/0237; B66C1/025; B66C1/0281; Y; Y10; Y10S; Y10S209/00; Y10S209/905; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24314; Y10T428/24322; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249958; Y10T428/249961; Y10T428/249994; Y10T428/249999
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
A suction prehension device comprising, a casing having a base plate, means on said casing for connecting the casing to a source of suction, said base plate having a plurality of perforations therein for communicating suction from within the casing to an exterior face of the base plate, a layer of low density open cell foam material extending across and fixed to the exterior face of said base plate, said layer of foam material having an outside and a plurality of openings extending through the layer from the outside surface to the base plate, said openings communicating with the perforations of the base plate, said openings having internal surface, and means for limiting air flow through the internal surfaces of the openings from the open cell foam of the foam material to enable the outside surface of the foam material to assist prehension, said means comprising, an at least partially air tight covering on the internal surfaces of the openings.
Claim 2
Dependent Claim
160 words
A suction prehension device comprising, a casing having a base plate, means on said casing for connecting the casing to a source of suction, said base plate having a plurality of perforations therein for communicating suction from within the casing to an exterior face of the base plate, a layer of low density open cell foam material extending across and fixed to the exterior face of said base plate, said layer of foam material having an outside and a plurality of openings extending through the layer from the outside surface to the base plate, said openings communicating with the perforations of the base plate, said openings having internal surface, and means for limiting air flow through the internal surfaces of the openings from the open cell foam of the foam material to enable the outside surface of the foam material to assist prehension, said means comprising, an at least partially air tight covering on the internal surfaces of the openings.
Claim 3
Dependent Claim
15 words
A device according to claim 1 wherein said covering comprises a bituminous a rubbery material.
Claim 4
Dependent Claim
16 words
Device according to claim 2 wherein said openings in the foam layer have an oblong section.
Claim 5
Dependent Claim
18 words
Device according to claim 3 wherein the foam material has a density of approximately 45 kg/m 3 .
Claim 6
Dependent Claim
20 words
Device according to claim 4 wherein said foam material has on the order of 16 to 20 cells/cm 3 .
Claim 7
Dependent Claim
18 words
Device according to claim 1 wherein the foam material has a density of approximately 45 kg/m 3 .
Claim 8
Dependent Claim
20 words
Device according to claim 1 wherein said foam material has on the order of 16 to 20 cells/cm 3 .
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) | 1986-06-20 | 1986-12-20 | 1987-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-20 | 1990-12-20 | 1991-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-20 | 1994-12-20 | 1995-06-21 | $7700.00 | Window Closed / Lapsed |