Abstract: A sliding hatch for a boat including a vertical bulkhead and deck having an opening with vertical and horizontal sections defining a companionway for access to areas below the deck. A door is pivotally mounted to a bulkhead adjacent the vertical opening and movable for access to the vertical section of the companionway. A hatch is slideably mounted to the deck for selectively enclosing the horizontal section of the opening. Pivoted links couple the door to the hatch, such that, as the door is opened and closed, the hatch is moved between open and closed positions.

Abstract: A ladder assembly for mounting a concealed ladder to a boat includes a frame having a pair of spaced-apart guides. The frame is adapted to be mounted within a boat. A slide is movably mounted to the guides for sliding from one end of said frame to an opposite end, and a ladder is pivotally mounted to said slide, such that the ladder can extend from a hatch in the boat and be lowered for use of the ladder in entering and exiting the water from the boat. In one embodiment, a pivot plate is pivotally mounted to the slide and the ladder is pivotally mounted to the slide. A control arm is pivotally mounted to the pivot plate or slide and provides leverage for the easy deployment and storing of the ladder.

Abstract: A ladder assembly for mounting a concealed ladder to a boat includes a frame having a pair of spaced-apart guides. The frame is adapted to be mounted within a boat. A slide is movably mounted to the guides for sliding from one end of said frame to an opposite end, and a ladder is pivotally mounted to said slide, such that the ladder can extend from a hatch in the boat and be lowered for use of the ladder in entering and exiting the water from the boat. In one embodiment, a pivot plate is pivotally mounted to the slide and the ladder is pivotally mounted to the slide. A control arm is pivotally mounted to the pivot plate or slide and provides leverage for the easy deployment and storing of the ladder.

Abstract: A sliding hatch for a boat including a vertical bulkhead and deck having an opening with vertical and horizontal sections defining a companionway for access to areas below the deck. A door is pivotally mounted to a bulkhead adjacent the vertical opening and movable for access to the vertical section of the companionway. A hatch is slideably mounted to the deck for selectively enclosing the horizontal section of the opening. Pivoted links couple the door to the hatch, such that, as the door is opened and closed, the hatch is moved between open and closed positions.

Abstract: An article is sulfonated by forming a sulfonating gas composition containing a gaseous sulfur-containing compound provided from a gas source. The gas source may utilize a chemical feed stock that includes a precursor sulfur-containing compound. The article is then contacted with the sulfur-containing gas until a surface treatment is effected. Next, the article is then optionally contacted with a gaseous neutralization composition, and then a liquid neutralization composition. In another sulfonation method, a first test sample is sulfonated and then analyzed by inductively coupled plasma analysis and X-ray fluorescence spectroscopy. A calibration relationship between the two spectroscopic techniques is determined with the inductively coupled plasma atomic spectroscopic value taken as the accurate value. In subsequent sulfonation runs, test samples are included and monitored by X-ray fluorescence.

Abstract: An article is sulfonated by forming a sulfonating gas composition containing a gaseous sulfur-containing compound provided from a gas source. The gas source may utilize a chemical feed stock that includes a precursor sulfur-containing compound. The article is then contacted with the sulfur-containing gas until a surface treatment is effected. Next, the article is then optionally contacted with a gaseous neutralization composition, and then a liquid neutralization composition. In another sulfonation method, a first test sample is sulfonated and then analyzed by inductively coupled plasma analysis and X-ray fluorescence spectroscopy. A calibration relationship between the two spectroscopic techniques is determined with the inductively coupled plasma atomic spectroscopic value taken as the accurate value. In subsequent sulfonation runs, test samples are included and monitored by X-ray fluorescence.

Abstract: A sulfonation method to treat a polymer substrate to provide a hydrophilic layer with an improvement in at least one of anti-fogging, anti-static, wettability, lubricity, anti-microbial and/or transparency properties. The articles formed thereby find excellent application in a wide range of areas.

Abstract: An article is sulfonated by forming a sulfonating gas composition containing a gaseous sulfur-containing compound provided from a gas source. The gas source may utilize a chemical feed stock that includes a precursor sulfur-containing compound. The article is then contacted with the sulfur-containing gas until a surface treatment is effected. Next, the article is then optionally contacted with a gaseous neutralization composition, and then a liquid neutralization composition. In another sulfonation method, a first test sample is sulfonated and then analyzed by inductively coupled plasma analysis and X-ray fluorescence spectroscopy. A calibration relationship between the two spectroscopic techniques is determined with the inductively coupled plasma atomic spectroscopic value taken as the accurate value. In subsequent sulfonation runs, test samples are included and monitored by X-ray fluorescence.