The device of the '354 patent is subject to wear and corrosion and line breakage.

The air chambers may contain inflatable bags to retain the pressurized air in each chamber.

Previous retractable masts have complicated mechanical components which are subject to corrosion or breakage, or require hydraulic or fluid seals between nested portions or lengths which require close tolerances and have seals which are subject to wear and eventual leakage. Can somebody bring me up to speed as to why Extendable Telescopic masts are not used in sailboats? Still another object of the invention is to provide a mast which has seals between nested movable mast sections so as to provide an open mast interior which is raised or lowered through control of pneumatic or hydraulic pressure. The telescopic sailboat mast come in an extensive collection comprising diverse designs and sizes so that every organization finds the most suitable for their telecommunication needs. 4,016,823, issued Apr. The support and cooperation has always been great, and the relationships warm and pleasant.

Improved airfoil sail structure, or "wingsai" Access method between marine structures and apparatus, Spinnaker sail for kayaks, canoes or other small water craft.

6,000,354, issued Dec. 14, 2000, to Vanlerberghe describes a retractable mast employing mechanical parts and lines and may be deployed only in a fully extended or fully retracted position. The mast, which retracts telescopically, comprises an inner core containing air sealed air chambers, either separated or coextensive, which are pressurized when the mast is fully extended. It is to be understood that the present invention is not limited to the sole embodiment described above, but encompasses any and all embodiments within the scope of the following claims. It was great to get him back onboard after 16 years to see how the system is now functioning.

5 is a section view drawn along lines. PATENTED CASE. This embodiment would be most useful where the boat is in a fresh water environment where corrosion is less severe than a marine environment. FIG. | Country Search

No. 7B, there is presented a view in elevation similar to that of FIG. What I also notice about Cramm is that in principle everything is negotiable in a good way, as well the somehow bigger challenges. All rights reserved. Been around for years and years. For me it is a big advantage that our companies are relatively close to each other. When storing the folding mast horizontally on deck, the cabins below deck will not have a cylindrical-shaped obstacle in the room, which increases the space on board. I think combining the two concepts gives you a strong platform requiring less rigging and stays as in the Beneteau design and I think with technology as it exists you could get the same if not more strength, for the same weight or less. 5, illustrating another embodiment, Referring to FIG.

7B, illustrating the mast mounting bracket and stiffener rod, wherein retractable mast, One or both of the respective middle chamber lower wall. Working with Cramm over the last 3 years has been a pleasure. chrysler sailboat 1977 For extra comfort and safety, the masts can be operated from the bridge or via a remote-control pendant, so that crew members do not need to access the foredeck in the dark to extend the mast while cruising. With the right technicians, putting up these telescopic sailboat mast isn't a complicated process because manufacturers design separate components to fit in without a hassle. B2-20120091-4, Electronic Components, Accessories & Telecommunications.

Provisional Patent Application Ser. - User Information Legal Enquiry Guide, 1999-2022 Alibaba.com. Accordingly, it is a principal object of the invention to provide a retractable and extendable mast for use on sailboats.

Cramm is a beautiful Dutch company to work together with.

U.S. Pat. The minor efforts needed for maintenance make these telescopic sailboat mast practical for virtually all telecommunication companies and institutions, both large and small. Enjoy highly efficient communication and signal transmission with the leading telescopic sailboat mast from Alibaba.com. It is yet another object of the invention to provide a mast as above which contains one or more bags within the interior of the mast, which are attached to a source of pressurized fluid which, upon entrance to the bag, inflates the bag, thus extending upper portions of the mast upward. 6 is a modified section view similar to FIG. Cramm masts can be used for a wide range of applications including navigation masts, antenna masts, flag masts, crane masts or light masts. All in all were extremely happy with the service Cramm has provided us with over the years and well continue to use them. Therefore, they're practical for all environments ranging from rooftops to mountaintops. If preferred, the whole mast can be faired and painted in the same quality paint as the yacht, to give it that extra designer look. Cramms service engineers are always very careful with keeping clean and not making a mess. Seamanship, Navigation & Boat Handling, Rules of the Road, Regulations, & Red Tape, WTB - Tiller Extension - Telescopic Spinlock. From big tankers using. FIG. These telescopic sailboat mast are made from intelligent designs and materials. 7C, there is shown a plan view of the boom of FIG. A pressurized air bottle may, also, provide pressurized air. A retractable mast for sailboats. As we offer a wide range of options, materials and designs, and as the masts can withstand severe weather conditions, our masts can be fitted on every yacht or vessel and used for all applications. As well as telescopic sections, the mast can also be fitted with a folding system. Storage above deck enables easy installation of the telescopic mast. I have always wondered how the motion of my Valiant is much better than some much larger ships in heavy seas. This makes the verbal communication much more efficient. Could this be a factor? Buying them from the site is very convenient because youll save a lot of time while receiving high-quality products accompanied by remarkable after-sales customer support. Privacy Guaranteed - your email is never shared with anyone, opt out any time.

5, illustrating another embodiment of the invention. sailboat

Not uncommon on a gaff rig to have a topsail on a separate sprit. So also the follow up of appointments and agreements work well is my experience. - Free format text: COLREG sets out, among other things, the rules of the road or navigation rules to be followed by yachts and other vessels at sea to prevent collisions between vessels. No matter how big or small, each project was completed to a high standard. Balpha Mast is a foldable mast system for yachts, which allows for easy lowering and raising of masts. This field is for validation purposes and should be left unchanged.

I understand it's not the most convenient solution as it gets more complex, but I can imagine the pro's of such a design. Zhejiang Valiant Power Technology Co., Ltd. Tianjin Talents International Trade Co., Ltd. Quzhou Corenice Import And Export Co., Ltd. Weihai Jingsheng Carbon Fiber Products Co., Ltd. Wuxi Bost Lifting Control Technology Co., Ltd. Shenzhen Sowze Security Electronics Co., Ltd. Changzhou Langzhuo Electrical Technology Co., Ltd. Weihai Xinbo Composite Products Co., Ltd. Yixing Futao Metal Structural Unit Co., Ltd. Telescopic Masts Sailboats High Modulus Carbon Fiber Telescopic Masts For Sailboats, Mast Telescopic 3-30m Load 50kg Mobile Electric Mast Manual Winch Antenna Telescopic Mast For Camera, Telescopic Mast Communication Tower 3-leg Tower 6m Motorized Telescopic Communication Mast, Telescopic Mast 10' 20ft 30ft 40ft 50ft 60ft 65ft Vehicle Marine Trailer Ground Mounted Electric Or Crank Up Telescopic Antenna Mast Pole, Check out top 10 proven tips from 30+ experienced buyers, Telescopic Mast Telescopic Mast Mobile Telecommunication Tower And Telescopic Antenna Mast, Telescopic Sailboat Mast 5m Sailboat Mast 5m Pneumatic Telescopic Mobile Sailboat Mast, Electric crank up telescopic sailboat mast, Closed High 1.9m Hand Push Extend High 12m Aluminum Sailboat Mobile Telescopic Mast, mobile survey when and wherever needed telescoping antenna mast, Telescopic High Light Aluminum Telescopic Antenna Mast, vehicle mounted telescopic mast and sailing mast, Customized length carbon fiber telescopic sailboat mast, 4-18m hand winch telescopic masts and hydraulic telescopic mast, 7 meter telescopic mast factory direct sale, 3-10m carry 50kg electric telescopic mast or manual winch telescopic mast for antenna, high strength carbon fiber antennas telescopic mast with clamps with locking, High 8m electrical power telescoping antenna mast, Hinged 30 Ft Telescoping Pneumatic Telescopic Antenna Mast, Mast for sailing boat with carbon fiber tube or custom size, 6m locking aluminum lighting antenna communication mobile pneumatic telescopic mast, Vehicle-mounted-telescopic-mast telescopic mast light SPM electric telescopic mast, Factory Direct Sale Customizable Pneumatic Telescopic Mast, High Quality Aluminum Alloy Vehicle Mounted Electric Mast Mobile Telescoping Antenna Electric Telescopic Pole With Tripod, 4.2 m pneumatic telescopic pole with light 4.2m pneumatic telescopic lighter mast, Pneumatic telescopic mobile tripod hard anodizing light locking solar antenna pole mast, Pneumatic telescopic mobile tripod hard anodizing pole communication mast, Adjust manually operated mast pole elevation up to 6Meters or 7Meters telescopic mast by ratchet, Professional Manufacturer Carbon Fiber Antenna Telescopic Mast With Tripod, Hand Push Aluminum 10M Light Mast Camera Telescopic Amsttelescopic Mast, Telescopic Electric Mast Motorized Telescopic Mast, 7.5m hot dip galvanized telescopic light mast, High Quality Galvanized 15m(50ft)Telescopic Mast, 18m (60ft) Mobile Antenna Telescopic Mast, 10' 16' 20' 26' 32' 40' 50' 60' 65' aluminum military telescopic mast. 7A, illustrating the installation of a sail, a boom, and a mast stiffener, with air pressure provided by an engine-driven compressor, wherein stiffener, Referring to FIG. Terms of Use A bracket mounts to the mast and extends around the stiffener, providing for rotatably mounting the boom aft of the stiffener. Yet another object of the invention to provide a mast as above wherein each movable mast section has a lower end plate having orifices therethrough so as to control the rate of deployment of the nested mast section.

The installation of Cramm equipment has been carried out by experienced technicians with maintenance in mind for access to serviceable components. Lowering in a storm would only make rolling more violent, there is no need to lower the cog in a storm by lowering a, I am afraid that I brought this up. This is where I got the idea. It is a further object of the invention to provide a mast as above which contains one or more sealed air chambers within the interior of the mast, which is attached to a source of pressurized fluid which, upon entrance to the sealed air chamber, inflates the chamber, thus extending upper portions of the mast upward. 1 with portions of the mast portions and boot broken away.

The device of the '370 patent is subject to wear and corrosion in a marine environment and the crank mechanism would be an encumbrance on a boat having a head sail. Please support our sponsors and let them know you heard about their products on Cruisers Forums. When storing a telescopic mast or folding mast below deck, the design of the mast fits perfectly into the yacht and deck.

1 in the retracted position. | U.S. Pat. These telescopic sailboat mast may be placed in areas of varying extreme temperatures while continuing to produce excellent services. This offers the option of transforming the mast into a crane (multi-purpose equipment) and storing it horizontally on deck or making it sinkable, below deck. The mast, which retracts telescopically, comprises an inner core containing sealed air chambers which are pressurized when the mast is fully extended. Furthermore, if an upgrade is needed in the future, no significant adjustments need to be made to the superstructure and deck. An air compressor, which may be powered by the boat engine, is utilized to supply pressurized air. A retractable and extendable mast system for sailboats comprising: a mast having a plurality of hollow mast sections which are capable of nesting in a retracted position and telescoping upward to an extended position;. Cramm offers above deck or built-in below deck storage systems for telescopic or folding masts. Cramm can supply all your requirements regarding navigation masts, antenna masts, flag masts or light masts.



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