David A May

US Patent:

49210327, May 1, 1990

Filed:

Dec 2, 1988

Appl. No.:

7/278786

Inventors:

David A. May - Chestnut Hill MA

Assignee:

Appropriate Technology Corporation - Brattleboro VT

International Classification:

A47H 500

US Classification:

160 841

Abstract:

A Roman shade having spacers for spacing the folds of the shade when in a raised position to provide the raised Roman shade with a cascading effect.

US Patent:

47196211, Jan 12, 1988

Filed:

Jul 15, 1985

Appl. No.:

6/755113

Inventors:

David C. May - Hopkinton MA

Assignee:

Raytheon Company - Lexington MA

International Classification:

H04J 302
H04J 324

US Classification:

370 85

Abstract:

A digital system comprising a synchronous fastbus for interconnecting a cluster of devices such as processors and for interconnecting a plurality of said clusters. Information is transferred over the synchronous fastbus using a parallel digital word information packet. All required bus control signals including acknowledge and non-acknowledge signals take place within the same packet transfer fastbus cycle time. A command information packet is transferred over the fastbus separately from a response information packet thereby leaving the fastbus free until a response packet is returned to the requestor. During the interim other devices are allowed to access the fastbus, thereby increasing significantly fastbus utilization.