Roller ball pens or roll pens are pens which use ball point writing mechanisms with water-based liquid or gelled ink, as opposed to the oil-based viscous...

invented a ball tracker system called the roller ball for this purpose in 1946. The device was patented in 1947, but only a prototype using a metal ball rolling...

Rollerball may refer to: Rollerball pen, a type of ballpoint pen and ink Roller ball (pointing device), a trackball-device invented by Ralph Benjamin Rollerball...

standards for ball point and roller ball pens: ISO 12756 1998: Drawing and writing instruments – Ball point pens – Vocabulary ISO 12757-1 1998: Ball point pens...

include hardball roller hockey, ball hockey, international style ball hockey, international hockey, quad hockey, hockey, English roller hockey, hockey skids...

cylindrical rollers Roller radial with spiral rollers Ball radial-thrust single-row Roller tapered Ball thrust, ball thrust-radial Roller thrust or thrust-radial...

either a ball or puck. Combined, roller hockey is played in nearly 60 countries worldwide. There are three major variants of organized roller hockey. Traditional...

This is a list of ball games and ball sports that include a ball as a key element in the activity, usually for scoring points. Ball sports fall within...

Roller sports are sports that use human powered vehicles which use rolling either by gravity or various pushing techniques. Typically ball bearings and...

Cannon Ball is a wooden roller coaster at Lake Winnepesaukah amusement park. Designed by John C. Allen and built by Philadelphia Toboggan Company (today...

Roll ball is a game played between two teams and is a unique combination of roller skates, basketball, handball, and throwball. It is played on "roller shoes"...

locations High-precision guide plate Advanced interlock system Anti-friction roller ball detents Hollow shafts and webbed gears Three-piece end load design aluminum...

permission". 22 April 2024. Monroe, Howard (April 23, 2024). "Iron Menace roller coaster at Dorney Park is a 64 mph thrill. Here's what it's like to ride...

friction which is higher than with ball bearings. Tapered roller thrust bearings consist of small tapered rollers arranged so that their axes all converge...

ISSN 0031-921X. Heyda, P. G. (2000). "Roller Ball Dynamics". Mathematics Today. 36 (9). Heyda, P. G. (October 1, 2002). "Roller Ball Dynamics Revisited". American...

Roller skates are shoes or bindings that fit onto shoes that are worn to enable the wearer to roll along on wheels. The first roller skate was an inline...

variant of roller hockey a.k.a. "rink hockey", it was derived from ice hockey instead and uses a type of hockey puck or a ball. Both roller games use a...

Roller skating is the act of travelling on surfaces with roller skates. It is a recreational activity, a sport, and a form of transportation. Roller rinks...

standard design shifted to use a ball rolling on a surface to detect motion, in turn connected to internal rollers. Most modern mice use optical movement...

movie Rollerball, specifically the futuristic and violent sport (similar to Roller Derby) portrayed in the film. The board comprises 7×7 squares with the central...

linear slides are motorized, and non-motorized dovetail slides, ball bearing slides and roller slides provide low-friction linear movement for equipment powered...

for ball and puck roller hockey were held. Following these Nationals, the first full competitive season officially began in North America for roller hockey...

manufacturing and aerospace. A roller screw is a mechanical actuator similar to a ball screw, but which uses rollers as the load transfer elements between...

screenplay, written by William Harrison, adapted his own short story "Roller Ball Murder", which had first appeared in the September 1973 issue of Esquire...

Roller derby is a roller skating contact sport played on an oval track by two teams of five skaters. It is played by approximately 1,250 amateur leagues...

Roller mills are mills that use cylindrical rollers, either in opposing pairs or against flat plates, to crush or grind various materials, such as grain...

Kickball Lacrosse Loofball Mesoamerican ballgame Newcomb ball Polo Paintball Quidditch Ringette Roller derby Rowing Sepak takraw Ultimate (sport) Woodsman...

Papadopoulos NP, Magos A (2007). "First-generation endometrial ablation: roller-ball vs loop vs laser". Best Pract Res Clin Obstet Gynaecol. 21 (6): 915–29...

slid across a smooth surface. The conventional roller-ball mouse uses a ball to create this action: the ball is in contact with two small shafts that are...

RollerSoccer, Futins, Football Skating, Roller Foot or roller football is a version of association football (soccer) played on roller skates. The sport...