US3593983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for holding fittings on concrete formwork
Assignee: Individual
•
Filing: 1969-04-07
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Granted: 1971-07-20
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Expires: 1989-04-07
Abstract
Abstract A system for mounting cup-shaped holders for fittings to be built into concrete bodies along the internal surface of concrete formwork. The device comprises an opening in the mounting shell in which a valve body is frictionally received, the valve body being thrust in place by a plunger and tappet on a device applied over the opening. The device may be connected with a suction pump by a hose or the like or may employ a piston pump for operating the tappet and providing suction.
Inventors
- 👤 Zoltan Csenyi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:48
CPC Classifications
E; E04; E04G; E04G15/00; E04G15/06; E04G15/061; H; H05; H05K; H05K13/00; H05K13/08; H05K13/089
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
114 words
A device for holding built-in fittings on shuttering used for the erection of concrete buildings or parts thereof, said device comprising a capsule or bell-shaped vacuum adhesion box provided with an air evacuation valve and means for generating a vacuum in the adhesion box applied to the shuttering, said valve including a nozzle and a closing member capable of being pressed friction tight thereinto and having allocated to it a connecting piece fixable thereon airtight, a plunger reciprocable relative to said adhesion box and a tappEt coaxial with said nozzle and supported axially displaceable and airtight in said connecting piece for introducing said closing member frictionally into said nozzle upon advance of said plunger.
Claim 2
Independent Claim
114 words
A device for holding built-in fittings on shuttering used for the erection of concrete buildings or parts thereof, said device comprising a capsule or bell-shaped vacuum adhesion box provided with an air evacuation valve and means for generating a vacuum in the adhesion box applied to the shuttering, said valve including a nozzle and a closing member capable of being pressed friction tight thereinto and having allocated to it a connecting piece fixable thereon airtight, a plunger reciprocable relative to said adhesion box and a tappEt coaxial with said nozzle and supported axially displaceable and airtight in said connecting piece for introducing said closing member frictionally into said nozzle upon advance of said plunger.
Claim 3
Dependent Claim
16 words
The device defined in claim 1 wherein the valve nozzle is made of elastically deformable material.
Claim 4
Dependent Claim
16 words
The device defined in claim 1 wherein the closing member is made of elastically deformable material.
Claim 5
Dependent Claim
39 words
The device defined in claim 1 wherein the valve nozzle is formed by an elastically deformable bush adjoining which is formed a chamber accessible through a bore provided in said bush from the outside and containing the closing member.
Claim 6
Dependent Claim
13 words
The device defined in claim 4 wherein the closing member is a ball.
Claim 7
Dependent Claim
17 words
The device defined in claim 4 wherein the bush has the configuration of a piece of hose.
Claim 8
Dependent Claim
16 words
The device defined in claim 1, further comprising a suction pump assembled with said connecting piece.
Claim 9
Dependent Claim
38 words
The device defined in claim 1 wherein the tappet has an annular groove and a sealing ring received therein, said connecting piece being provided with a central bearing bore receiving said tappet and sealingly engaged by said ring.
Claim 10
Dependent Claim
60 words
The device defined in claim 1 wherein the tappet is tapered to a thinner stem at one end and at the other end has a head against which abuts one end of a compression spring whose other end engages the bottom of a bore surrounding a pump cylinder slidably receiving said plunges, said plunges being constituted as a pump piston.
Claim 11
Dependent Claim
46 words
The device defined in claim 1 wherein the closing member is provided with a blind bore open towards said plunger and coaxial with said tappet, by means of which bore the closing member can be pushed onto a thin stem of the tappet with a push-fit.
Claim 12
Dependent Claim
38 words
The device defined in claim 10, wherein the closing member is made of elastically deformable material, the blind hole provided therein going so deep that the bridge of material left can be pierced with a stiff, sharp object.
Claim 13
Dependent Claim
41 words
The device defined in claim 1 wherein said connecting piece is connected by a flexible pipe with a vacuum source, the head of the tappet projecting from the connecting piece and forming said plunger so as to permit actuation by hand.
Claim 14
Dependent Claim
16 words
The device defined in claim 12, wherein a shutoff member is fitted in the flexible pipe.
Claim 15
Dependent Claim
51 words
The device defined in claim 13 wherein the shutoff member is a multiway cock by means of which the flexible pipe can be closed at will and the connecting piece can be connected to the atmosphere for the purpose of admitting air to a suction space formed in said connecting piece.
Claim 16
Dependent Claim
15 words
The device defined in claim 12, wherein the connecting piece is provided with a handle.
Claim 17
Dependent Claim
37 words
The device defined in claim 15, wherein an electric control cable is run parallel to the flexible pipe to a relay acting upon the shutoff member, a switch fitted in said cable being attached to the handle.
Claim 18
Dependent Claim
32 words
The device defined in claim 1, further comprising a valve that can be actuated from the outside and fitted in the connecting piece to permit the addition of air to said box.
References Cited (Backward Citations)
US1801723A
Cited
US3059952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |