The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1985
Filed:
Dec. 12, 1983
Irwin G Baker, Bellevue, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
Three motors (9, 13, 17) are operated independently to extend telescopically first, second, and third coaxial stages (30, 38, 52). Each motor (9, 13, 17) has an axial extension (28, 36, 48) on its rotor (12, 16, 20) that threadedly engages the respective stage (30, 38, 52). Extension (28) is fixed to rotor (12). Extensions (36, 48) are spline connected to rotors (16, 20). First stage (30) is attached to extension (36) by a bearing (62). Second stage (38) is attached to extension (48) by a bearing (64). When first stage (30) extends or retracts, it carries with it second and third stages (38, 52) and extensions (36, 48). When second stage (38) extends or retracts, it carries with it third stage (52) and extension (48). Stages (30, 38, 52) are fixed against rotation relative to a housing (4).