Abstract: Here is disclosed a face mask provided with a rotation angle regulating means for stepwise variation of an angle of each buckle relative to associated lens frame side wall. A buckle is rotatably attached to the lens frame side wall of the face mask and the lens frame side wall and the buckle are formed with the rotation angle regulating means comprising one or more protrusions and depressions adapted to be releasably brought into mutual engagement.

Abstract: Here is disclosed an attachment for a golf tee improved to support a golf ball above a top face of the golf tee. An attachment constructed to be mounted on a head of a golf tee has a first annular segment having a generally inverted cone shape that is cut off at the top and adapted to be close round a peripheral surface of the head of the golf tee, a cylindrical second annular segment extending downward from a lower end of the first annular segment for partially surrounding a leg of the golf tee, and an elastically deformable supporting segment extending upward from an upper end of the first annular segment so as to support the golf ball with an upper distal end thereof. The first annular segment is formed with elastically deformable tongues and each of these tongues is formed on an inner surface thereof with a salience adapted to come in contact with a top face of the golf tee from above.

Abstract: An air cylinder fastening device has a belt and structure for belt tightening. Belt tightening structure is attached to each of the longitudinally opposite ends of the belt, and comprises first and second slider members opposed to each other in a circumferential direction of the air cylinder and a coupler member adapted to move these members close to or apart from each other. The coupler member comprises a front segment fixed to a rotor of the first slider member, a rear segment extending from the front segment toward the second slider member, a threaded part of the rear segment extending outward through a rotor of the second slider member, a control knob screwed on the threaded part and a spring interposed between the rotor and the control knob.

Abstract: Swimming goggles includes a pair of lens portions, a peripheral wall portion extending rearward from a periphery of each of the lens portions, a nose belt portion, and a strap. The peripheral wall portion includes an inner peripheral wall portion which comes in contact with a surrounding area of a wearer's eye, and an outer peripheral portion which is formed to surround at least a portion of the inner peripheral wall portion. The outer peripheral wall portion is extended from a portion of a surrounding area of an inner peripheral wall portion positioned on at least upper and lower sides of the lens portion toward a rear side thereof so as to be gradually moved apart from an outer surface of the inner peripheral wall portion.

Abstract: A jacket having a buoyancy compensating function has a pocket into which a weight can be inserted and a flap. A first locking member is attached to outer surface of the pocket and a second locking member adapted to be engaged with the first locking member is attached to outer surface of the flap. The second locking member comprises a pair of elastic arms adapted to be guided along grooves of the first locking member and stopper means adapted to be forced into a space defined between these elastic arms and thereby to prevent the elastic arms from being elastically deformed. The weight is provided with a band strip adapted to extend outward from the pocket through a gap defined between the first locking member and the stopper means after the weight has been inserted into the pocket.

Abstract: An air supply and exhaust system used for a buoyancy compensator includes an air supply and exhaust unit attached to a jacket, a manipulating unit connected to a hose extending from an air cylinder and first and second hoses connected to these two units. The air supply and exhaust unit uses the air supplied from the manipulating unit to supply the air to the jacket and to open an air exhaust valve and thereby to exhaust the air from the jacket. The manipulating unit uses a rotary change-over switch to supply the air from an air cylinder to a main supply pipe or an air chamber of the air supply and exhaust unit.

Abstract: Here is disclosed a regulator for diving free from any possibility that smooth operation of respective components might be obstructed due to the presence of impurities in the air supplied from an air cylinder. In the regulator, a tubular coupler member coupling a regulator for diving to an air hose extending from an air cylinder is provided with a filter assembly.

Abstract: Here is disclosed a snorkel comprising a mouthpiece section, an open end section, a tubular section being contiguous to the open end section and a connector section interposed between the mouthpiece section and the tubular section and provided with a check valve. First and second halves constituting the connector section are pressed against each other along respective peripheral edges of these halves and then covered with a belt-like section welded to the connector section from the outside.

Abstract: A face mask has a lens frame, buckles mounted on transversely opposite extremities of the lens frame, a headband having its longitudinally opposite end portions adjustably held by the respective buckles and a pair of band guides which the headband passes through. The headband is provided on its longitudinally opposite end portions with a plurality of engagement teeth. Each of the band guides has a first guide opening and a second guide opening. The first guide opening is formed with a first guide area and a second guide areas. The first guide area is adapted to guide zones of the end portion extending along its transversely opposite side edges 8 and the second guide area is adapted to guide the engagement teeth. The second guide opening has a height corresponding to or slightly larger than a thickness t of the end portion.

Abstract: A buoyancy compensating jacket is provided on a waist portion with a pocket having a first flap, a pouch having a flat cord adapted to be inserted into and taken out from the pocket with a weight packed into the pouch. As a guide means for the flat cord, at least one of a substantially C-shaped guide ring provided at a distal end of the first flap substantially in the vertically middle and a groove formed on an outer surface of the pocket and/or an inner surface of the first flap substantially in the vertically middle.

Abstract: Here is disclosed swimming goggles 1 comprising a pair of lenses 2, frames 3 mounted around these lenses 2, respectively, and pairs of upper and lower arms 13, 14 extending from the respective frames 3 wherein each of these pairs of arms 13, 14 are connected to each other by means of a connecting region to which a buckle 4 is attached.

Abstract: A pair of lens frames 11 being more soft and flexible than a pair of lenses 10 include annular lens holders 15 to hold the lenses 10, gasket skirts 16 extending from rear edges of the lens holders 15 and a bridge 17 to connect the lens holders 15 to each other. The bridge 17 has a gradient in flexibility increasing from a middle zone of the bridge 17 bisecting the length of the bridge 17 toward the respective lens holders 15.

Abstract: A tubular housing 13 constituting an air supply mechanism for a regulator 1 for diving is provided with a deflector 21 adapted to cover air outlet ports 24, 26 of the housing 13 from immediately above as viewed in a radial direction of the housing 13.

Abstract: A regulator 1 for diving has a tubular housing 13 containing therein an air supply valve 72 and this tubular housing 13 is formed with cutouts 101, 102 extending orthogonally to a longitudinal axis of the housing 13. A lever 17 interposed between the air supply valve 72 and a diaphragm 10 has its inner end 17B adapted to stride across the housing 13 and to be inserted into the cutouts 101, 102.

Abstract: A regulator for diving includes a pressure regulating means. The pressure regulating means includes a multiple thread screw 87 operatively thread-engaged with a slider 84 which, in turn, is pressed a pressure regulating coil spring 81 so that this coil spring 81 is adjusted from the maximum compressed condition to the minimum compressed condition as the multiple thread screw 87 is fully turned.

Abstract: A diving face mask 1 has a skirt 3 of which a part forms a nose cover 9. The nose cover 9 has a bottom wall 12 configured so that the inner surface of the bottom wall 12 facing nares of a wearer of the mask curves along transversely middle portion 13 of the inner surface so as to protrude inwardly of the nose cover 9 with respect to the portions of the inner surface extending on both sides of the middle portion 13.

Abstract: An air guide tube 62 is mounted within a tubular portion 42 formed in a housing 13 of a regulator 1 for diving. One end of the tube 62 is formed with a valve seal 63A against which a valve 72 is pressed and another end opposite to this end is formed on its inner surface with threads 67.