LOS ANGELES, July 20: Actor James Doohan, best known as Scotty, the feisty, Scottish-accented chief engineer on television’s original Star Trek series, died on Wednesday at his home in Redmond, Washington, his manager said.

He was 85.

Doohan, who was diagnosed with Alzheimer’s disease last summer, died of complications from that degenerative illness and pneumonia, Steve Stevens told Reuters.

A native of Vancouver, British Columbia, Doohan was a prolific voice actor on Canadian radio before making his move into television in the 1950s.

But he will be remembered for playing Lt. Commander Montgomery “Scotty” Scott, the can-do chief engineer aboard the starship USS Enterprise on the original Star Trek series, which ran from 1966-69 on NBC.

He reprised the role for several big-screen Star Trek features.

One of his character’s chief functions on the show was to operate the transporter used to ‘beam’ crew members to and from the Enterprise — often in response to an order that entered the pop culture as the catch phrase “Beam me up Scotty.”