Abstract: Bumper bowling systems include retractable bumpers and mechanisms connected to the retractable bumpers disposed alongside a bowling alley's gutters. The mechanisms are adapted to extend the bumpers into a position which prevent bowling balls from falling into the gutter and also to retract the bumpers to permit ordinary bowling. A segmented longitudinally extending cap and a structural support member are also provided so that the cap covers the bumper mechanism.

Abstract: Ultrasonic cleaner apparatus is disclosed which includes a support housing, a cleaning tank supported by the housing and a transducer device physically attached to the bottom of the cleaning tank. A basket is configured to be capable of insertion into the cleaning tank. The basket includes a rim portion which rests on the support housing and maintains the bottom of the basket a predetermined distance above the bottom of the cleaning tank. The basket includes a predetermined number of cylindrical housings which are vertically oriented and are positioned around the inside of the basket. The cylindrical housings are configured to receive technical pens therein. A liquid level post projects upwardly from the bottom of the basket. Apertures in the bottom of the basket and the cylindrical housings allow cleaning solution and ultrasonic waves and energy to be transferred back and forth between the inside of the basket and the cleaning tank.