The wheel is 5,500 years old. The suitcase is centuries old. Nobody combined them until 1970.
And even then, it took nearly two more decades — and one flight attendant's side project — before wheeled luggage looked the way it does today.
- 1921
The first attempt, and the first ignore
A New York resident named Theophilus Hokkanen files a patent for an "improved valise" with a wheel on the side. Nothing comes of it.
Filed, then forgotten - 1925 – 1949
More inventors, same silence
Saviour Mastrontonio patents a "luggage carrier." Later, Grace and Malcolm McIntyre file their own version. Wheeled luggage patents keep appearing — and keep going nowhere.
Filed, then forgotten - 1970
Bernard Sadow's airport epiphany
A luggage company executive is dragging two heavy suitcases through an airport in Puerto Rico, on the way home from Aruba, when he watches a worker glide heavy machinery past him on a wheeled platform. He turns to his wife: "That's what we need for luggage." That night, he unscrews four casters off a wardrobe and straps them to a suitcase.
“I showed it to every department store in New York City... and everybody said I was crazy.”— Bernard Sadow, on trying to sell his invention
- 1972
Macy's finally says yes
After months of rejection, a Macy's buyer takes a chance on the "Rolling Luggage." Sadow's patent is granted that same year. Sales are decent — but the design is clumsy: top-heavy, small wheels that don't swivel, dragged sideways on a leash like a dog.
Patent #3,653,474 - 1987
A pilot flips the whole idea upright
Northwest Airlines pilot Robert Plath takes a suitcase, stands it on its end, bolts two wheels to the bottom corner, and adds a retractable handle. His flight-crew colleagues want one immediately. He leaves the cockpit to found Travelpro — and the "Rollaboard" becomes the shape every carry-on still copies.
The design that stuck
So why the 49-year gap?
It wasn't a materials problem or an engineering problem. Tap each one open.
There were porters
For most of the 20th century, airports and train stations had staff whose entire job was carrying your bags. A wheel solves a problem that, for a lot of travelers, didn't exist yet.
It was coded as "womanly"
Sadow described a "macho feeling" among buyers: carrying your own bag — no wheels needed — was treated as a basic act of manliness, and men typically carried luggage for the women they traveled with. A wheeled bag read as an admission you couldn't.
Air travel hadn't scaled up yet
Airports only became sprawling, walk-everywhere complexes as commercial flying boomed through the 1970s and 80s. Short walks from car to gate didn't create enough pain to justify the change.
The first design was genuinely bad
Sadow's original had four small, fixed casters and had to be towed sideways like a leashed pet — it tipped over easily. It took Plath's vertical, two-wheel, retractable-handle redesign in 1987 to make the idea actually pleasant to use.
Sources: U.S. Patent 3,653,474 · Travelpro company history · Hagley Museum & Library
Parts that keep luggage moving
From spinner wheels to trolley systems, SH Luggage Industries makes the components inside the bag.