Robert A Perron

US Patent:

40314340, Jun 21, 1977

Filed:

Dec 29, 1975

Appl. No.:

5/644947

Inventors:

Robert Richard Perron - Beverly MA
John E. Trombly - Winchester MA

Assignee:

The Eastern Company - Naugatuck CT

International Classification:

E05B 4700

US Classification:

361172

Abstract:

An inductively coupled electronic lock system wherein a key unit receives binary multiple bit data and generates a binary frequency modulated carrier which is input to a transmitter inductor. A lock unit of the system has an inductive pick-up which compares the received sequence of binary signals with a predetermined sequence of binary signals so that upon a proper correspondence a motor opens the lock.

US Patent:

40351165, Jul 12, 1977

Filed:

Sep 10, 1976

Appl. No.:

5/722008

Inventors:

John L. O'Brien - Winchester MA
Robert R. Perron - Beverly MA
Peter F. Strong - Harvard MA

Assignee:

Arthur D. Little, Inc. - Cambridge MA

International Classification:

B22D 2308
B22F 900

US Classification:

425 10

Abstract:

Process and apparatus for forming essentially spherical solid pellets directly from a melt, and particularly solid metal pellets such as iron and lead. The melt from a column of a preset height is directed through one or more orifices in a way to form a jet which experiences an upwardly directed trajectory path and which under the influence of vibratory action breaks up to form pellets of a predetermined diameter. Adjustments of the column height and/or vibration frequency are used to control pellet diameter. The pellets may be formed and solidified in a controlled atmosphere; and in the case of iron pellets, the carbon content of the pellets may be adjusted, to attain a desired degree of hardness, either before or after pellet formation. Iron pellets thus formed are particularly suitable as substitutes for lead pellets in ammunition.

US Patent:

39796477, Sep 7, 1976

Filed:

Jun 11, 1975

Appl. No.:

5/586019

Inventors:

Robert Richard Perron - Beverly MA
John Thomas Fowler - Winchester MA

Assignee:

The Eastern Company - Naugatuck CT

International Classification:

E05B 4706

US Classification:

317134

Abstract:

An inductively coupled electronic lock system wherein the key has a clock driven variable pulse width generator with alterable pulse sequence input to an inductor. The lock part of the system has an inductive pick-up which discriminates against all but a preselected sequence of pulses, converts the received signals to DC and powers a motor to open the lock.