Inventor

Robert D. Vanderlaan

Inventor

Kalamazoo, MI, US

Overview

21→

Patents

1977–1992

Patent span

Electricity

Primary field (CPC H)

Patents· 21 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H01Fprimary

H01FMagnets23%

Y10TTechnical subjects covered by former us classification20%

F15BSystems acting by means of fluids in general18%

H02KDynamo-electric machines18%

F16KValves7%

F04BPositive-displacement machines for liquids5%

F16HGearing5%

B64CAeroplanes2%

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure2%

PatentTitleYear

5,092,178'Differential pressure sensor mechanisms'1992 5,012,144'Linear direct drive motor'1991 5,004,940'Direct drive valve force motor with gain shaping provision'1991 4,825,904'Two position flow control valve assembly with position sensing'1989 4,816,707'Limited angle torque motor with wide rotation poles'1989 4,672,992'Direct drive valve-ball drive mechanism'1987 4,645,178'Redundant drive mechanisms for a direct drive valve and force motor assembly'1987 4,641,812'Direct drive valve and force motor assembly including interchangeable stator assembly and alignment system or method'1987 4,612,526'Torque motor with high torque poles and magnetic centering spring adjustment'1986 4,600,910'Limited angle torque motor with high torque output multiple coils and increased magnetic centering torque'1986 4,596,970'Limited angle torque motor with high stiffness and natural frequency'1986 4,548,089'Electro-mechanical direct drive valve servo system with rotary to linear valve drive mechanism'1985 4,534,273'Control actuation system including staged direct drive valve with fault control'1985 4,533,891'Limited angle torque motor'1985 4,510,403'Limited angle torque motor with magnetic centering and stops'1985 4,507,634'Force motor with null centering and null position bias'1985 4,472,998'Redundant control actuation system-concentric direct drive valve'1984 4,466,597'Electro-mechanical direct drive valve servo system with rotary to linear valve drive mechanism'1984 4,382,748'Opposed piston type free piston engine pump unit'1983 4,307,999'Free piston engine pump including variable energy rate and acceleration-deceleration controls'1981 4,009,642'Differential pressure sensing valve'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1989Patents assigned to PNEUMO CORP (16)· patent assignee history

1977–1992Based in Kalamazoo, MI, US· patent location history

1987–1992Patents assigned to PNEUMO ABEX CORP (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
PNEUMO CORP	16	1977–1989
PNEUMO ABEX CORP	5	1987–1992

Locations

Location	Patents	Span
Kalamazoo, MI, US	21	1977–1992