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Topic: Diving mask

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Professional diving

Surface supplied diving

Heliox

Technical diving

Diver training organizations

Commercial diving

Heliair

Maximum operating depth

Diving equipment

Nitrox

Professional Association of Diving Instructors

Barotrauma

Trimix

Full face diving mask

Scuba

	Diving (underwater) - MSN Encarta
		All groups, whether diving from a boat or from shore, are required to fly a diver down flag (a red flag with a white diagonal slash) to alert boaters that people are underwater.
		To become certified, diving students must pass a written exam and a swimming proficiency test, and successfully demonstrate newly mastered skills in four open-water dives.
		Diving equipment depends on the location of the dive, but whether scuba diving or snorkeling, recreational divers need several basic items: a mask, a snorkel, fins, and, when necessary, an exposure suit to remain warm.
	encarta.msn.com /encyclopedia_761568466/Diving_(underwater).html (1125 words)

	Pressure equalizing mechanism for a diving mask - Patent 5572989
		The diving mask as recited in claim 1, wherein the nose pinching element comprises a pair of noseclip tabs and a pivotable portion of the bracket, the pivotable portion being mounted on a hinge and disposed for selective engagement with the pair of noseclip tabs.
		The diving mask as recited in claim 7, wherein the hinge is oriented to permit the pivotable portion to be pivoted generally towards the diver's nose when placed in the nosepiece and each arm of the pair of arms includes a roller.
		The diving mask as recited in claim 10, wherein the nose pinching element comprises a release valve in fluid communication with the bladder to release fluid from the bladder.
	www.freepatentsonline.com /5572989.html (4151 words)

	Dive Masks and Swim Goggles - AllAboutVision.com
		Diving masks, which are designed for scuba dives or snorkeling, tend to be large and squarish.
		Dive masks that are made with lenses designed specifically to your measurements and prescription are generally more expensive than their premade counterparts.
		The lenses in diving masks and swim goggles are made of glass, acrylic, regular ophthalmic plastic or polycarbonate.
	www.allaboutvision.com /sports/diving.htm (960 words)

	Masks for Technical diving
		Some masks have removable lenses for vision correction; divers must make certain that a reliable attachment method is in use as the lenses may become dislodged accidentally during a dive.
		Some divers place a spare mask on the primary light canister or in a spare pouch on the belt but it is generally preferable to store it in a pocket on the side of one's suit, reducing clutter and drag.
		The reserve mask must be frequently checked to ensure viability, and for frequent divers this may be unlikely to happen before each dive, lending credibility to the practice of reserve mask use only on more demanding dives.
	www.divetekadventures.com /Technical_Mask.htm (399 words)

	Scuba Diving: mask storage
		I can answer questions on diving education and training, the use and selection of proper dive equipment and questions on general maintenance of dive equipment as well as diving regulator repair.
		I have been diving for 50 years, teaching diving for 45 years and owned a diving business for 15 years.
		Keep in mind also that dive masks are sort of like shoes...they don't last forever so enjoy them for a few years and then shop around and see if you can find something new that may fit you better.
	en.allexperts.com /q/Scuba-Diving-1649/mask-storage.htm (460 words)

	Modified underwater diving mask - Patent 6416199
		In this respect, the modified underwater diving mask according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in so doing provides an apparatus primarily developed for the purpose of positioning a battery operated spotlight between the eye pieces of an underwater diving mask for improved visibility.
		1 is a perspective illustration of the preferred embodiment of the modified underwater diving mask constructed in accordance with the principles of the present invention.
		The present invention, the new and improved modified underwater diving mask, is comprised of a plurality of components.
	www.freepatentsonline.com /6416199.html (2822 words)

	Free diving in detail
		During free diving to great depths a physical reaction occurs in the divers body, what is known as "diving reflex" - the divers heartbeat slows and when approaching "world record" depths, can be nearly half the normal rate.
		It is also interesting to note when free diving deeper than 50 - 60 meters, the common diving mask must be replaced with specially made contact lenses to avoid "mask squeeze" while still being able to see.
		"Mask squeeze", caused by the air trapped inside the mask being compressed at depth, would under normal circumstances be taken care of by the diver exhaling a small amount of air through the nose and into the mask - equalising the pressure.
	members.tripod.com /icomradios/freediving.htm (620 words)

	DivingObsession.com - Scuba Diving Gear
		Any diving mask must include the nose in the same air space as the eyes, because as you descend you need to exhale air from your nose to prevent the increasing water pressure from pressing the mask into your face too hard.
		The dive tables are based on a simple descent to a particular depth, a stay at that depth, and then an ascent.
		Many dive knives that are not intended for use while spearfishing have a blunt tip, to avoid accidental injury and to improve prying ability.
	www.divingobsession.com /info/gear.tdf (3756 words)

	PDA-Corrective lenses for Diving Masks
		The small amount of time a diving mask is normally worn also lessens the likelihood of being bothered by a slightly inaccurate prescription.
		Modern progressive power lenses can’t be used in diving masks as the greater than usual distance between the eye and the lens surface is not compatible with the intricate function of these lenses.
		All prescription lenses used in diving masks are made from glass and bonded on the back surface of the original mask lens using a UV curing adhesive (Loctite 358).
	www.perthdiving.com.au /Masklenses.html (1075 words)

	Diving mask patent invention
		A structure that permits an easy adjustment in the relative positions between the mask portion and the pair of the side buckles is adopted in the diving mask.
		The diving mask comprises a mask portion and a pair of side buckles respectively extending rearwards from the left and right sides of the mask portion.
		A structure that permits an easy adjustment in the relative positions between the mask portion and the pair of the side buckles (20) is adopted in the aforementioned diving mask.
	www.freshpatents.com /Diving-mask-dt20070104ptan20070000034.php (1222 words)

	¤ Choosing a Scuba Mask - The Scuba Guide
		The style of scuba mask you choose will depend on your level of comfort with your field of vision while wearing the scuba mask.
		The shape of the scuba mask and the silicone skirt on the mask must conform to the shape of your face to provide you with a comfortable fit.
		A good sign you have chosen the right scuba mask for your face is when the mask stays on your face comfortably without using the straps to hold it in place.
	www.thescubaguide.com /gear/masks/choosing-a-mask.aspx (882 words)

	Tom's Jalan-jalan (Site not responding. Last check: 2007-10-12)
		Your snorkel and the rest of your diving equipment might be the most important factor which you must pay attention to when you wish to dive.
		If your mask's strap is too wide or too narrow for your snorkel to be properly attached to it, you might have to look for another mask.
		In order to be able to enjoy your diving practice you must be able to relax and feel comfortable while using your snorkel as well as while being in the water.
	groups.msn.com /TomsJalanjalan/masksnorkelchoices.msnw (410 words)

	Training: Diving Techniques
		The former is performed with the following pieces of equipment (known as "set number one"): a diving mask, fins, a snorkel, a neoprene suit, a ballast belt, a depth-meter, etc.; the latter (performed with "set number two") includes all of the above plus a breathing apparatus.
		When diving, the first problem that a free diver encounters is the need of equalizing the pressure in his middle ear because of its anatomo-physiological features.
		In order to clean it, the diver should bend his head backwards in such position that the glass of the mask should be almost parallel to the surface, then with four of his fingers (without the thumb) the upper edge of the mask is pushed towards the face.
	library.thinkquest.org /28170/83.html (1200 words)

	Selecting a mask for scuba diving or snorkeling.
		If you get a mask with a nice style, you are much more likely to be happy with it in the long run.
		Masks that have a wider field of view generally also have a larger volume.
		I can however tell you that in general, dual panel masks and masks with smaller lenses will have less volume and be easier to clear than their larger counterparts.
	lakenorforkscuba.com /articles/choosing-a-mask.asp (669 words)

	Diving Machines, submarines, submersibles, minisubs, personal subs, subs, tourist subs
		During a recent diving trip to the Florida Keys USA I took the time out to vist the new History of Diving Museum founded by Drs.
		These types of helmets were crafted from old boiler water tanks and made in the back yards of America in the early days when owning a professional helmet was out of reach and to costly for most average divers.
		Air is exhausted on the left side of the mask through a rubber-disc exhaust valve.
	www.divingmachines.com /helmets.html (1056 words)

	Scuba diving mask (Site not responding. Last check: 2007-10-12)
		Your mask was manufactured by someone cutting out the right pieces of glass and placing them in a mold.
		That is, they open the mold and expect the mask to drop out, but instead it sticks to the inside of the mold like an egg might stick to a frying pan.
		The glass is cooler than the air inside your mask, and so much like a soda can on a humid day, water condenses and forms little droplets, right on the surface of your mask lens.
	www.deepsouthdivers.org /mask.html (592 words)

	Mares Esa Scuba Diving Mask (Site not responding. Last check: 2007-10-12)
		The Esa mask features a wide panoramic window with an extended range of vision compared with traditional masks.
		With the Esa, divers can get what they have been deprived of for such a long time: they just have to lower their eyes to be able to see their weight belt, the upper B/C straps and to read any wrist-worn or console-mounted instruments without having to raise them.
		Optical lenses can be fitted in the bottom windows to read the dive computer or watch, whereas the large lenses can be corrected for short-sightedness only.
	www.brunosdiveshop.com /esa.htm (178 words)

	Snorkel and Mask Tips for snorkeling and scuba diving
		Your snorkel and the rest of your diving equipment might be the most important factor which you must pay attention to when youwish to dive.
		The most important aspect to which you must pay attention to when you buy a new diving mask and snorkel is the way it fitsyour face.
		If your mask's strap is too wide or toonarrow for your snorkel to be properly attached to it, you mighthave to look for another mask.
	www.adventuresportsonline.com /snorkel-mask-tips.htm (381 words)

	Maintaining Your Scuba Mask - The Scuba Guide
		To clean your scuba mask, apply a pea-sized drop of toothpaste, not gel, to the inside of the lens.
		The key to clear vision, while scuba diving and keeping your scuba mask in good condition, is proper maintenance during and after each dive.
		A good rinse after each dive helps to keep your mask clean, but to ensure there is no residue or grit left on your scuba mask you must properly clean it on a regular basis.
	www.thescubaguide.com /gear/masks/maintaining-your-mask.aspx (743 words)

	Halfbakery: Diving Mask HUD
		Since your number one concern while diving is ou air supply and bottom time, you are constantly reaching for your console to check your computer or gauges.I know I would enjoy a dive much more if I could see my stats in the corner of my mask.
		Currently there are many models of dive computer the transmit the data to a wrist unit.
		It would have to be a waterproof display as there is often a lot of water in a mask, and you wash it between dives.
	www.halfbakery.com /idea/Diving_20Mask_20HUD (344 words)

	Preparing a New Diving Mask - Blue Water Hunter of Kona, Hawaii
		These days most masks’ skirt and strap are made from silicone.
		If the silicone film is not removed the mask will fog no matter what defog solution is added to the inside of the mask.
		If the mask is flushed throughout the dive due to a poor fitted, damaged mask, or from constant removal and adjusting, defogging solution will be washed out.
	www.bluewaterhunter.com /education/education_masks.html (325 words)

	Prescription Dive Masks (Site not responding. Last check: 2007-10-12)
		Prescriptions are compensated, using vertex distance slide rule, to allow for focus adjustment, if the mask you use places the lenses further from your eyes than your eyeglasses.
		They are not ground down to be dangerously thin as pre-ground prescription dive masks.
		My firm is the oldest manufacturer of custom made prescription dive masks in the world.
	www.rxdivemask.com (548 words)

	How to Defog a New Scuba Diving Mask - WikiHow
		If the mask is removed for any reason, either spit on the lenses or add commercial defogging drops to keep them clean.
		A common and cheap technique for keeping your mask clear on dive day is to spit into your mask and rub the spit all over the inside of the lenses.
		Over time masks that are spit in tend to grow a fl mold around the lens.
	www.wikihow.com /Defog-a-New-Scuba-Diving-Mask (669 words)

	Dive Masks, Scuba Diving Masks, Tusa, Mares, Pro Ear - Purge masks
		The ergonomic quick-adjusting buckles, positioned directly on the skirt, afford superior comfort and hydrodynamics during the dive, as well as improving the adherence of the skirt to the face.
		This mask is an excellent balance of low volume with side windows, and a solid piece of tempered glass in front with no bridge obstruction.
		This mask is much like the Splendive II except that it has the added advantage of little side windows for extended peripheral viewing.
	www.scubatoys.com /store/Scuba_Masks.asp?REFERER=scubathrills (1777 words)

	Scuba Mask - HydroOptix - Calif. Diving News
		One thing is for sure, show up on the dive boat with one of these masks and you will certainly stand out.
		The HydroOptix mask is such a radical departure from the ordinary dive mask it has admittedly made some people skeptical.
		The second dive was in poor visibility -- 15 to 20 feet.
	www.hydrooptix.com /cal_diving_news.htm (708 words)

	Seal Diving Mask Clear - Shopping.com
		The first multi-sport dive mask!This mask is perfect for just about anything that goes on in or...
		Aeris Moray 2 Scuba Dive Mask AERIS has styled a range of masks to fit most faces, and most...
		High-quality silicone double-lens mask for narrow to medium faces Surgical grade silicone skirt seals comfortably, stays soft Very low volume mask is...
	www.shopping.com /xGS-Seal_Diving_Mask_Clear (904 words)

	DIVERWEST - Scuba mask, diver mask, diving mask, tri-view mask, low volume mask, purge mask
		This medium sized mask has easy to adjust buckles which swivel for better comfort.
		Mask is made of pliable, long lasting SILICONE, not rubber.
		The mask will support the weight of your regulator and reduce jaw fatigue.
	www.diverwest.com /masks.htm (292 words)

	Scuba Diving Mask, Snorkel Mask, Scuba Mask
		The masks comes with filters which snap on to the mask over clear tempered glass lenses.
		Thanks to the new buckles FRBII (Fast Rotating Buckle) the mask is rapidly fitted and may quickly be removed by pulling the lower strap buckles.
		This avoids the mask squeeze effect, which is normal with common masks when you go deeper, and eliminate water infiltration.
	www.blueseaadventures.com /store/masks4.htm (695 words)

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