Abstract: An improved paintball marker bolt and bolt head uses a curved gas inlet ramp and geometrically designed outlet holes to provide pressurized gas flow with decreased turbulence and more uniform distribution over the paintball surface. The improvements in gas flow and pressure distribution are combined with other mechanical improvements related to drive transfer, friction reduction, and bolt assembly, resulting in a significantly improved marker bolt. Improvements are realized in increased gas flow efficiency, increased paintball velocity (by 30 feet per second or more), increased range, improved shot consistency (less than a 2½% variation in shot-to-shot paintball velocity), decreased jamming, and decreased premature paintball breakage.

Abstract: An improved paintball marker bolt and bolt head uses a curved gas inlet ramp and geometrically designed outlet holes to provide pressurized gas flow with decreased turbulence and more uniform distribution over the paintball surface. The improvements in gas flow and pressure distribution are combined with other mechanical improvements related to drive transfer, friction reduction, and bolt assembly, resulting in a significantly improved marker bolt. Improvements are realized in increased gas flow efficiency, increased paintball velocity (by 30 feet per second or more), increased range, improved shot consistency (less than a 2-1/2% variation in shot-to-shot paintball velocity), decreased jamming, and decreased premature paintball breakage.

Abstract: A system and method that enable Internet users to access selected records retrieved from result sets that are derived from earlier search queries. The invention tracks and ranks selected records that users deemed valuable to a search query. When an Internet user submits a search query, the system creates three distinct but related queries for searching all accessible web sites, a collection database. and a rank database. The collection database includes a list of collections, i.e., records that other users deem relevant to a search topic and that are selected from result sets derived with earlier search queries; the collection is organized in a folder/file based hierarchical format. The rank database includes Uniform Resource Locators (URLs) for identifying, web sites that are bookmarked by other users. Each record in the collection and rank databases has an associated score that is used to organize records retrieved from those databases.