telescopic mast sailboatstuart weitzman returns

A latch 27 of a sail-attachment portion 26a as shown in FIG. The top-most mast section, here 144, is preferably hollow as shown to minimize weight, but this is not essential. The trunk portion also pivots about an axle so that the mast is lowered as a result of being brought more nearly in alignment with the deck of the sailboat at the same time that it is collapsing in length. The following additional features may be provided in any suitable combination. The loose fitting nature of the mast rings allows the telescopic sections to collapse, by allowing the mast rings to become stacked one on top of the other as shown in FIG. Since the base section is mounted to the sailboat, the telescoping sections are thereby likewise constrained to remain at a substantially fixed azimuthal orientation relative to the boat. Discussion in 'Sailboats' started by yipster, Apr 25, 2012. & Terms of Use. For reasons to be discussed below, the mast ring 24 is loosely fitted to a mast section so that the mast ring can rotate about the mast section, and so that it can slide up and down on the mast section. The bearing material may be applied to the surface 25a as a coating or attached thereto as a preform by use of inset fasteners or adhesives. Hydraulic with a programmable logic controller, Clear coat carbon fibre or yacht colour scheme, Filament-wound carbon fibre tubes and 316 stainless steel components. 1 erected manually into an extended configuration with the use of pins. Boat Design Net does not necessarily endorse nor share the view of each individual post. Typically, there are three such telescopic sections (i.e., n=2, 3, and 4) 142, 143, and 144. Status signals reported on wheelhouse Expertly designed for maximum strength with minimum weight for easy handling. With reference to FIG. Preferably, the mast sections are cylindrical in shape, to allow for the rotation of a mast ring structure as discussed below, and preferably they are also hollow, to minimize weight. A hydraulic fluid pump may be used to power the collapsible mast. For example, the user may first pin the section 14a4 to the section 14a3 with the pin 153; next the user may pin the section 14a3 to the section 14a2 with the pin 152; and finally the user may pin the section 14a2 to the section 14a1 with the pin 151. On the other hand, the loose fitting mast rings allow the sail to rotate about the mast, and this is believed to be desirable to allow the leading edge of the sail to better align itself with the wind-stream than the current methods for mounting a sale to a mast, by which the leading edge of the sail is installed as a tongue into a groove in the mast, allows. Each AMS telescopic light mast is completely designed and tailored to meet the customer's requirements. It is frequently required to take down the mast of a sailboat, for trailering the sailboat or for passing the sailboat underneath a low bridge. 10 is a side elevation of the mast of FIG. Waterproof housing FIG. Preferably, mineral oil is used as the hydraulic fluid so that leakage poses minimal risk of environmental harm; however, any non-compressible, lubricious fluid may be used as the hydraulic fluid. With the mast in its extended configuration, the connector 43 is normally supported by the junction between two adjacent mast sections, e.g., where the connector 43 is fitted around the mast section 143, it is supported by the ledge defined by the larger diameter mast section 142 immediately below. 6 shows a sail 28 that has been provided with grommets 30 according to the invention. FIGS. To advertise, take a look at WoodenBoat Advertising, or use your Google Adwords account if you want to advertise on the Forum. A plurality of mast rings are also provided, each mast ring having a sail attachment portion for attaching the mast ring to the sail of the sailboat, and a ring-shaped portion for fitting around a selected one of the telescopic sections and, thus fitted, sliding on the outer surface thereof. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates. Hydraulically actuated. The pump has an inlet and an outlet, and preferably a fluid holding tank is provided in fluid communication with the inlet. No. Suitable for any yacht up to 100m LOA. As shown in FIG. Among the peculiarities of our masts there is a spring loaded system which stiffens the mast once We produce carbon fiber masts, installed flush with the bridge inside a waterproof housing and integrated into the structure. As one prior art solution to this problem, U.S. Pat. The foot 13 may be welded, bolted, or otherwise fastened directly to a suitably strong, metal surface of the sailboat such as the deck or hull, or it may be fastened to plates or brackets attached to the sailboat. Telescopic masts are supplied as ready-to-use products, with an electrical panel and a hydraulic unit. 1, a connector 42 for guy cables 40 is preferably provided at the top-most telescopic section 14n for anchoring the mast against bending forces in the standard manner; and a connector 43 for guy cables 41 is provided at about half-mast. The extended configuration may be maintained by closing a valve 21 between the outlet of the pump and the entry port 201. Various lighting configurations are available, including Lopolight and Aqua Signal. For powering the collapsible mast, a hydraulic fluid pump may be provided. Selling/self promotion postings are verboten on the Forum. The electrical cable is completely hidden inside t he system (patent pending). The terms and expressions which have been employed in the foregoing specification are used therein as terms of description and not of limitation, and there is no intention in the use of such terms and expressions to exclude equivalents of the features shown and described or portions thereof, it being recognized that the scope of the invention is defined and limited only by the claims which follow. FIGS. Weather conditions CQuips telescoping two and three stage light masts are the ultimate solution for yachts which are 50 metres or longer. The simple interface with its computer controlled hydraulic system allows for easy installation and maintenance. 3, for example. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. 3, in a larger sailboat where manual raising of the mast is not desirable or practical, the telescopic sections are preferably raised to adopt an extended configuration of the mast 12 according to the invention by pressurized hydraulic fluid (not shown). Privacy Policy FIG. Light version weight (on request) A collapsible mast and rigging for a sailboat. but basic study on telescopic masts is now completed it say's.. http://au.groups.yahoo.com/group/harryproa/photos/album/1947136348/pic/list?order=ordinal, http://au.groups.yahoo.com/group/harryproa/?yguid=312404726, (You must log in or sign up to reply here.). The WoodenBoat Forum is sponsored by WoodenBoat Publications, publisher of WoodenBoat magazine. 11. Quickly deployed at the touch of a button, they extend to a height of up to 10 metres. FIG. generation, <- Previous Patent (Methods and systems ). Lights height from deck A sailboat is also disclosed having a collapsible mast mounted thereto, the collapsible mast having a base section and one or more telescopic sections, wherein the telescopic sections have cylindrically shaped exterior surfaces. In a small sailboat that is about 14 feet in length, the mast is about 20 feet in height when fully extended; but the sailboat may be of any size, and the mast may be of any height. Thus the four mast rings referenced as 241 can be caused to slide vertically upwardly by the user independently of the remaining mast rings 242-244 sliding vertically downwardly as a result of the collapse of the mast. If the sailboat has a deep keel, it may be desirable to build the non-collapsible base section 141 into the keel to allow for a maximum degree of lowering of the mast. Returning to FIG. Navigation lights The mast ring has a ring-shaped portion 25 for surrounding the mast section, and a sail-attachment portion 26 for attaching to the sail. Hand pump for emergency operation included. Referring back to FIG. 1, for the purpose of maximally collapsing the sail 28, to facilitate wrapping it in a shroud for road transport. 2004-2022 FreePatentsOnline.com. The material preferably has a low density but it should also be sufficiently strong to withstand internal fluid pressures of 30-60 psi (for example, if a mast section diameter is 3 inches (area about equal to 28 square inches) and the weight the mast section must support (with the sail and all rigging attached) is 1000 pounds, the fluid pressure would need to be about 35 psi, the required fluid pressure being greater for decreasing mast section diameters. A ring-shaped portion 25a may be formed of steel rod that is dipped in a lubricious coating material. We have the experience and expertise to create bespoke equipment solutions. However, the mast rings could be secured more tightly to the mast sections so that they would be able to support the sail if desired. 400kg with Aluminium housing and actuator. Privacy Policy 39 Vestey Drive, Mt. 2, the base section of any mast 12 according to the invention typically has a foot 13 to which the base section is attached. & Terms of Use. The Forum is a free service, and much like the "free" content on Public Radio, we hope you will support WoodenBoat by subscribing to this fabulous magazine. Referring back to FIG. Operating voltage: 400Vac, 50Hz. They are composed by three carbon fibre stages and, when not in use, they can be fully retracted into a compact, watertight housing, disappearing into the deck for flush use on a helideck or aesthetic reasons. Electrically actuated version (patent pending) available on request. The hydraulic fluid is initially stored in a fluid holding tank 16, and is pumped into respective interior cavities 18n of all but the top-most section, through corresponding fluid entry ports 20n therein, by a hydraulic pump 22 which is typically battery powered. 1 shows a sailboat 10 with an elongate, collapsible mast 12 according to the invention defining an elongate axis L that is oriented substantially vertically. 1. FIG. Smart design features require minimal attachment points to the deck and hull structure allowing flexibility with your configuration and available space. Thus the interior surface 25a of the ring-shaped portion 25 is provided with a lubricious, relatively soft bearing material 27 (i.e., as compared to the material of the mast section), such as PTFE (aka TEFLON) or acetyl resin (aka DELRIN).