Joseph A Ferrante

US Patent:

57605017, Jun 2, 1998

Filed:

Mar 28, 1996

Appl. No.:

8/623132

Inventors:

Warren H. Grote - Florissant MO
Vern Bertelsman - Florissant MO
Joseph A. Ferrante - Ballwin MO
Bruce Marlin - Hope AR

Assignee:

American Trading and Production Corporation - Baltimore MD

International Classification:

H02K 4100
H02K 3316

US Classification:

310 13

Abstract:

A structure for a compression driver motor assembly which utilizes a pot with an integral top plate and a pole cap, thereby reducing magnetic losses and permitting manufacture of a driver structure with fewer parts and reduced weight. A more efficient process for manufacture of the motor assembly is also disclosed. The pot is manufactured with an integral top plate which is adapted for use with a large pole cap. The pole cap is affixed to the top of a permanent magnet and forms the magnetic gap with the top of the pot. The magnetic circuit of the driver thus includes a permanent magnet, a pot, a magnetic gap and the pole cap. The motor assembly is assembled in a process requiring fewer steps and less elaborate tooling than the motor assembly of the prior art.

US Patent:

61644080, Dec 26, 2000

Filed:

Mar 10, 1999

Appl. No.:

9/265664

Inventors:

Michael E. Lamm - High Ridge MO
Thomas J. Johnson - Chesterfield MO
Joseph A. Ferrante - Wildwood MO

Assignee:

Atlas Sound - Ennis TX

International Classification:

E04B 199

US Classification:

181 30

Abstract:

A plenum mounted, flat metal panel diaphragm masking loudspeaker includes a flat, stamped sheet metal frame which has a deployed state and an undeployed, flat state well suited to storage or shipping. A large, movable tab at the bottom of the frame is weakened by a series of small apertures and forms a hinge or fold line. Electrical accessories including a transformer, a rotary switch for selecting transformer taps and signal connections are included in an enclosed box mounted on the foldable tab. The flat panel masking loudspeaker is shipped flat in the undeployed state and then the large tab is deployed by being folded outwardly before installing the flat panel masking loudspeaker in a ceiling plenum. During installation, the tab is folded along the hinge or fold line out to approximately 90. degree. with respect to the rest of the masking speaker frame, the entire assembly is then held overhead by the installer and is positioned above the suspended ceiling T-bar supports, within the plenum, whereupon the assembly is lowered or pushed downwardly and is held in place by one or more spring clips gripping the speaker frame and the ceiling T-bar supports.