Moog Brand Guidelines: Moog Inc., Bill Moog’s 1951 Servo Valve & an East Aurora Hangar

A patent, two brothers and a hangar.

Moog Inc. grew out of a single invention. In April 1950 Bill Moog, then a design engineer at Cornell Aeronautical Laboratory in Buffalo, applied for a patent on an electrohydraulic servo valve, a device that meters hydraulic pressure to move actuators precisely, used at first to steer guided missiles; the patent was granted in January 1953, English Wikipedia says.

In July 1951, the company says, Bill Moog, his brother Art Moog and a fellow engineer, Lou Geyer, pooled their money and opened Moog Valve, working from the corner of a dirt-floored airplane hangar in East Aurora, New York, with “only a couple of potential customers, and one great product.” Wikipedia says the firm was renamed Moog Servocontrols and filed to sell shares in 1959, which then traded over the counter, and in 1965 took the name Moog Inc. as it listed on the American Stock Exchange. The company is marking its 75th anniversary in 2026.

The name invites confusion. Moog Inc. is a separate company from Moog Music, the synthesizer maker founded by Robert Moog. Wikipedia’s article on Moog Music says the two are often confused, partly because they were founded at about the same time by cousins, and its article on Bill Moog names Robert Moog as his cousin. This guide is about the aerospace and motion-control company only.

From missile valves to flight controls.

The servo valve is still part of the range: Moog’s website lists servo valves and proportional valves among its product families, alongside actuation, hexapods and motion systems, and weapon stores management. Over seven decades, Wikipedia says, the company moved from missile controls into flight controls for military and commercial aircraft, controls for satellites and launch vehicles, and industrial machinery, opening subsidiaries in the United Kingdom, Germany and Japan in the 1970s and 1980s. The end of the Cold War brought cuts in US defence procurement in the early 1990s, and the company answered by buying businesses and widening into commercial and industrial work, the article says.

Acquisitions shaped the mix. Wikipedia lists the hydraulic and mechanical actuation lines of AlliedSignal in Torrance, California, in 1994; Raytheon Aircraft’s Montek business in Salt Lake City in 1998; Poly-Scientific, a maker of slip rings, from Northrop Grumman in 2004; and, in 2009, GE Aviation’s flight-control actuation business in Wolverhampton, which it says became Moog’s largest British operation and brought work on the primary flight controls of the Eurofighter Typhoon. The same article calls the F-35 the largest programme in the company’s history, and lists Moog equipment on space programmes from Apollo and the Space Shuttle to the Space Launch System that flew Artemis I. Missile work continues too: in January 2025, according to Wikipedia, Moog was selected by Lockheed Martin to supply actuators for PAC-3 missiles for the US Army, and it makes a lightweight dual-rail launcher for Hellfire missiles.

Away from aircraft, Wikipedia says Moog built the motion-control system for the retractable roof over Wimbledon’s Centre Court, some 150 axes of servo-controlled electric actuators engineered by its British arm, and has made hydraulic and electric motion bases for flight simulators. For a time it also ran a medical-devices business, formed in 2006 from purchases including Curlin Medical, before reorganising around fewer divisions between 2016 and 2019, the article says. The company now groups its work into four businesses — Military Aircraft, Commercial Aircraft, Space and Defense, and Industrial — and says it works in motion control “across land, sea, air, and space.”

How aerospace suppliers present themselves.

Aerospace suppliers sell to a small number of buyers, and their imagery is built for engineers, airlines and investors rather than for passengers. The product is usually hidden inside someone else’s aircraft, so the pictures tend to show it before it disappears: an engine bolted to a test stand, a single fan blade lit in a studio, a fuselage section on a factory floor, or a cutaway drawing that opens up the layers of a turbofan or a landing-gear leg.

Factories are part of the story. Clean rooms, composite lay-up tables and long assembly halls appear again and again, often with people in them: apprentices, engineers and technicians in overalls, shown at work rather than posing. Many of these companies are joint ventures, partners or subcontractors on the same programmes, so a single engine or wing can carry the work of several firms, each telling its own part of it.

The trade has its own stages. The Paris Air Show at Le Bourget and the Farnborough show in England alternate year by year, and suppliers take chalets and stands there alongside the aircraft makers they serve. Services after delivery are a large part of the business too, and the language of aftermarket support, spare parts and maintenance, repair and overhaul (MRO) runs through their websites and reports.

Corporate reports often put an aircraft on the cover, even when the company makes none of it. Behind that shared look sit very different histories: century-old engine makers, plants sold off by aircraft builders, conglomerate spin-outs and private-equity buyouts. The guides in this series set out what can be checked about each one, and mark clearly what rests on the company’s own word.

An engineering company in Elma.

Moog is a public company whose Class A and Class B shares trade on the New York Stock Exchange, and it is based today in Elma, New York, rather than East Aurora; The Buffalo News called it the “Elma-based motion-equipment manufacturer” in 2024. Wikipedia names its military-aircraft sites as Elma, Torrance in California, Fort Worth and Mineral Wells in Texas, Oklahoma City and Everett in Washington, plus Wolverhampton in England and an offshore plant in Baguio City in the Philippines.

Two official matters from recent years are on record. Its chief executive, Pat Roche, is an Irish citizen and a US permanent resident; because he is not a US citizen, the Defense Counterintelligence and Security Agency told Moog in 2023 that it could not enter new contracts requiring a federal security clearance. In July 2024 The Buffalo News reported that Moog had resolved the matter by forming a subsidiary, Moog Military Aircraft, with an independent organisational structure and its own board, and that the Defense Department had granted it a new facility security clearance. In October 2024, Compliance Week reported, Moog agreed to pay penalties to settle Securities and Exchange Commission allegations that its Indian subsidiary had violated the Foreign Corrupt Practices Act between 2020 and 2022.

For a design guide, Moog shows an engineering name built on a founder’s surname and a single patented valve, and kept distinct from a namesake in music. Compare Parker Hannifin, another motion and control group, and Woodward, another American aerospace supplier. For this guide we use a navy, a cool grey and an amber with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep Moog’s identity on hand — save it to a board in the Made Good inspiration library.