Abstract: A pressure relief valve assembly includes a housing, a diaphragm assembly separating the housing into a sensing pressure section and a tank pressure section, the sensing pressure section configured to sense both atmospheric pressure and the pressure in the tank pressure section and the tank pressure section is configured to only sense the pressure in the tank pressure section, an orifice disposed between the sensing pressure section and the tank pressure section allowing fluid to flow in through the orifice when the pressure in the sensing pressure section is less than the pressure in the tank pressure section fluid to flow out through the orifice when the pressure in the sensing pressure section is greater than the pressure in the tank pressure section.

Abstract: A weighted combination of attributes including but not limited to color, shape, pattern, brand, style, size, and material may be used to rank items when searching for similar items of a given category on an ecommerce system website. The weights on each attribute may be optimized by using feedback from users, the feedback indicating the importance of each attribute to a purchaser when searching for similar items of various categories. Alternatively, click-through patterns from the ecommerce system website can be mined and used to optimize the importance of each attribute to users by item category. The optimum attribute weights for that items category are used to rank the results in a search for similar items in that category.

Abstract: A pressure relief valve assembly includes a housing, a diaphragm assembly separating the housing into a sensing pressure section and a tank pressure section, the sensing pressure section configured to sense both atmospheric pressure and the pressure in the tank pressure section and the tank pressure section is configured to only sense the pressure in the tank pressure section, an orifice disposed between the sensing pressure section and the tank pressure section allowing fluid to flow in through the orifice when the pressure in the sensing pressure section is less than the pressure in the tank pressure section fluid to flow out through the orifice when the pressure in the sensing pressure section is greater than the pressure in the tank pressure section.

Abstract: A method and system for narrowing down generic searches using related search terms is provided. An example system comprises a communications module, a listings retrieval module, a supplemental search term generator, and a filter generator. The communications module may be configured to receive a user-supplied search term. The listings retrieval module may be configured to retrieve, based on the user-supplied search term, one or more listings. The supplemental search term generator may be configured to identify, based on frequency of appearance of different words in the titles of the retrieved listings, a supplemental search term. The filter generator may be configured to generate, based on the supplemental search term, a list of filters to be presented to a user for selection.

Abstract: A weighted combination of attributes including but not limited to color, shape, pattern, brand, style, size, and material may be used to rank items when searching for similar items of a given category on an ecommerce system website. The weights on each attribute may be optimized by using feedback from users, the feedback indicating the importance of each attribute to a purchaser when searching for similar items of various categories. Alternatively, click-through patterns from the ecommerce system website can be mined and used to optimize the importance of each attribute to users by item category. The optimum attribute weights for that items category are used to rank the results in a search for similar items in that category.