Avnet, Inc.

Other

Lynn D Palmer

Larry D Marks

Theodore F Jensen

Donald L Carriere

Christian J Rahnke

Rogelio G Samson

David R Donaldson

Antoni Paluszny

A compressor with a rotary driven centrifugal impeller which receives inlet air from an inlet passageway and this discharges compressed air through a radially extending diffuser passageway. Moveable vanes are provided both in the inlet passageway and diffuser passageway for varying the pressure and flow output from the compressor while maintaining the rotary speed of the centrifugal impeller substantially constant. In the preferred form of the invention, the centrifugal impeller and an electrical generator are rotatably driven at a constant speed and in synchronism with each other and, together, form an electrical and pneumatic power system.

Compressor

A record player turntable has a substantially flat circular metallic top and an integral substantially cylindrical downwardly extending metallic flange and a resilient mat having a circular top portion covering the aforesaid circular metal top portion and having an integral downwardly extending resilient flange gripping the said metallic flange. The connection between the horizontal metal turntable top and its connected vertically extending flange consists of an integral diagonal web of the metallic flange flared downwardly and outwardly. This web has grooves providing for a lodgment and gripping action on the part of the circular downwardly extending rim of the inverted pan-shaped plastic mat that covers the turntable top and it also forms part of the exposed substantially cylindrical lateral face of the turntable. A horizontally outwardly facing annular groove is formed in the aforesaid web adjacent its upper end, and an annular vertically upwardly facing groove providing a substantially square annular shoulder or bead remaining between said annular grooves is also formed in the web. The upper lip of the horizontal outwardly facing groove is preferably tapered externally downwardly and outwardly to assist expansion of the flange radially during application of the mat. A mat of organic composition of some elasticity (molded elastic polymeric material) has a disc-like top and a depending outwardly flaring frustoconical flange, the lower edge and margin of which flange is forced into the upwardly facing annular groove of the metal turntable, and simultaneously a substantially radially inwardly projecting rib on the inside surface of the depending flange of the mat is forced into the horizontally facing groove where said rib of the mat is held against vertical upward displacement partially by its circumferential grip in tension and, if desired, partly by the radial inward compression produced upon forcing the lower margin of the flange of the mat into the upwardly facing circular groove formed in the aforesaid web. The finished turntable gives the appearance of a thick plastic cushion bounded at its lower side edge by a polished metal band.

Phonograph turntable and mat assembly

A pin mounted on the under side of a turntable is used to hold a drive belt also engaged by a drum which is mounted on the turntable and forms a loop. Mounted on a base plate is a drive pulley. This invention solves the problem of how to assemble the turntable on the base plate and end up with the belt engaged on the pulley and the drum. During assembly the turntable is placed over the base plate with the pulley inside the loop. A simple turning of the turntable will cause the belt to tension and slip off the pin onto the pulley.

Enclosed belt drive for record player turntable

Growing community of inventors

Coloma, MI, United States of America

Lynn D Palmer