ROBERT R PERRON
Electrician in Beverly Farms, MA
License number
Massachusetts 8423
Issued Date
Jun 6, 1958
Expiration Date
Jun 30, 2000
Type
Electrical Engineer
Address
Address
Beverly Farms, MA 01915
Personal information
See more information about ROBERT R PERRON at radaris.comName
Address
Phone
4 Azalea Ct, Chelmsford, MA 01824
49 Brimmer St, Boston, MA 02108
433 5Th Massachusetts Tpke, Fitchburg, MA 01420
37 North St, Andover, MA 01810
36 Oakwood Ave, Auburn, MA 01501
Professional information
Process And Apparatus For Forming Essentially Spherical Pellets Directly From A Melt
US Patent:
4035116, 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
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.
Keyhole-Less Electronic Lock
US Patent:
4031434, Jun 21, 1977
Filed:
Dec 29, 1975
Appl. No.:
5/644947
Inventors:
Robert Richard Perron - Beverly MA
John E. Trombly - Winchester 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.
Inductively Coupled Lock
US Patent:
3979647, Sep 7, 1976
Filed:
Jun 11, 1975
Appl. No.:
5/586019
Inventors:
Robert Richard Perron - Beverly MA
John Thomas Fowler - Winchester 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.