Abstract: Capacitor bodies are usually carried in open ended containers. The open ends are then closed with a cover or capacitor top after the capacitor body is inserted in the container. Electrical leads are then attached to terminals carried by the capacitor top. Prior art methods of forming such tops involved insert molding. The present invention starts with a preformed plastic disc with two apertures for terminals and a boss for positioning lead attachment. The terminals and a positioning lead are then applied to the disc through a combination of riveting and ultrasonic swaging.

Abstract: An internally threaded insert having a knurled outer surface is positioned in an aperture formed in a cover for a capacitor. This provides an antitwist characteristic between the insert and the walls of the aperture to facilitate a seal between the two. An electrical terminal can then be threaded into the insert to electrically connect it to an internal lead of the capacitor. A bushing is also carried in the aperture to provide a seal between the insert and the cover. The insert has a tenon which includes a shoulder providing large and small diameters. The large diameter tenon is deformed to provide a washer and seal at and around the insert at the aperture. After placement of the internal capacitor lead over the formed washer around the insert, the smaller diameter tenon is deformed to provide a rivet head over the lead to hold it in place.

Abstract: An internally threaded insert having intersecting faces about its axis is positioned in a keyed aperture formed in a cover for a capacitor. This provides an antitwist characteristic between the insert and the walls of the aperture to facilitate a seal between the two. An electrical terminal can then be threaded into the insert to electrically connect it to an internal lead of the capacitor.An elastic bushing is also carried in the keyed aperture to provide a seal.The cover has a rib extending around its periphery to engage a capacitor housing, the rib providing a seal.