Fisher Company

Radu Calin Napau-Stoica

Mircea Napau

Ioan Napau

Ileana Dacia Napau

Doina Napau

Sapan Mahendra Poptani

Antal Teer

Dean Lenane

Matthew Essian

A seat adjuster assembly for a vehicle seat assembly may include a housing, a worm, a spindle screw, a motor, and either a helical gear or a single-enveloping worm gear. The worm may be disposed within the housing for rotation about a first axis and having a thread. The helical gear or single-enveloping worm gear may be disposed within the housing for rotation about a second axis and meshingly-engaged with a pitch surface of the thread of the worm. The spindle screw may extend along the second axis and through the housing and the helical gear or single-enveloping worm gear. The spindle screw may be meshingly-engaged with the helical gear or single-enveloping worm gear. The motor may drive the worm to cause linear movement of the housing, worm, motor, and the helical gear or single-enveloping worm gear along the second axis.

Open architecture power length adjuster assembly for a vehicle seat and method of manufacturing the same

A seat adjuster drive including a stationary track that is fixed to a vehicle and a sliding track that is arranged in sliding engagement with the stationary track for movement fore and aft. A gear box, mounted to the sliding track, supports a pinion that is part of a rack and pinion drive assembly. The gear box houses a conical spiral gear set and one or more planetary gear sets. The conical spiral gear set includes a conical pinion gear that is coupled to an electric motor and a conical spiral gear that is arranged in meshing engagement with the conical pinion gear. The conical spiral gear is carried on the pinion in a sliding fit. The one or more planetary gear sets rotatably couple the conical spiral gear and the pinion through a gear reduction.

Ultra-compact power length adjuster with anti-back drive capability and pinion-rack output for a vehicle seat

A method of manufacturing a gear drive for a seat adjuster assembly may include applying a cutting process to a worm gear blank to cut gear teeth into the worm gear blank and form a single-enveloping worm gear; forming a worm with a helical thread that includes a pitch surface that is configured to mesh with the gear teeth of the single-enveloping worm gear. A longitudinal crown is created on the pitch surface of the helical thread of the worm such that the pitch surface has an arcuate profile moving from a proximal end of the worm to a distal end of the worm. In addition, a crowned tooth profile is created on the helical thread of the worm that extends in an angular direction between a top land and a bottom land of the helical thread. The crowned tooth profile bows outwardly along a convex curve.

A seat adjuster assembly including a housing, a worm, a worm gear, and a spindle screw is provided. The worm is disposed within the housing for rotation about a first axis and includes a helical thread. The worm gear is disposed within the housing for rotation about a second axis and is meshingly-engaged with the worm. The spindle screw extends through the housing and the worm gear for rotation about the second axis. The spindle screw is meshingly-engaged with the worm gear. The helical thread of the worm may be longitudinally crowned or double-crowned.

Growing community of inventors

Lupeni, Romania

Radu Calin Napau-Stoica