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Title:
VACUUM FASTENING PAD
Document Type and Number:
WIPO Patent Application WO/1998/017868
Kind Code:
A1
Abstract:
A square or rectangular frame of cast or fabricated material (4) is mounted on a support structure (6) with similar frames for appropriate load holding capacity. Each frame has a vacuum inlet within the seal (7) area. A flexible seal (7) of rubber or similar material moulded or extruded into a shape and profile to (7) is secured into the rectangular frame (3). When the object to be fastened to the rectangular frames (5) (a vessel or attachment plate) pushes against the area (1) of the seal (7), it flattens the seal down flat against the area (2) of the seal. The area of seal between 1 and 2 becomes locked together preventing the seal from distorting and maximising grip on the surface (5) when forces are applied in direction (8) on the frames. Vacuum is applied within each rectangular frame pulling the seals into a flat position. The holding frame with rectangular or square pads attached is capable of holding large objects in place.

Inventors:
HADCROFT JOHN MACKAY (NZ)
MONTGOMERY PETER JAMES (NZ)
Application Number:
PCT/NZ1997/000146
Publication Date:
April 30, 1998
Filing Date:
October 21, 1997
Export Citation:
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Assignee:
HADCROFT JOHN MACKAY (NZ)
MONTGOMERY PETER JAMES (NZ)
International Classes:
E02B3/20; F16B47/00; (IPC1-7): E02B3/20; F16B47/00
Foreign References:
US3463114A1969-08-26
US3974794A1976-08-17
US3626890A1971-12-14
DE4118905A11992-12-10
US3322091A1967-05-30
Other References:
PATENT ABSTRACTS OF JAPAN vol. 10, no. 246 (M - 510)<2302> 23 August 1986 (1986-08-23)
Download PDF:
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Claims:
Claims
1. Vacuum pad shape, corigeration and seal design as described (above).
2. Use of pistons (rams) powered by fluid or air to hold a vessel clear of fenders or wharf compensating for forces pushing the ship in or out from fenders or wharf.
3. Use of pistons (rams) powered by fluid or air to... (a) hold a vessel in a fixed position preventing movement in either direction parallel to a wharf or fender system. (b) to mve a vessel along a wharf or fender system by a brake or clamping device fastened to the pistons as described.
4. The mounting of the units described on the front edge of a wharf or fender system fixed in place or on a rail.
5. The mounting of the units described on the underside of a wharf or fender system fixed in place or on a rail system.
6. The mounting of the units on the deck or within the frame of the vessel with fastening plates mounted th flexible fastening th the wharf of fender system.
Description:
Vacuum Fastening Pad refer to sheet 7.

A square or rectangular frame of cast or fabricated material (4) is mounted on a support structure (6) with similar frames for appropriate load holding capacity. Each frame has a vacuum inlet within the seal(7) area.

A flexable seal (7) of rubber or similar material moulded or extruded into a shape and profile to (7) in Fig 1 is secured into the rectangular frame (3).

When the object to be fastened to the rectangular frames(5) (a vessel or attachment plate) pushes against the area(l) of the seal(7) it flattens the seal down flat against the area of the seal (2).

The area of seal between 1 and 2 becomes locked together preventing the seal from distorting and maximising grip on the surface (5) whan forces are applied in direction (8).on the frames.

Vacuum is applied within each rectangular frame pulling the seals into a flat position.

The holding frame with rectangular or square pads attached is capable of holding large objects in place.




 
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