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1. WO1996002401 - INFINITELY ADJUSTABLE LINEAR ACTUATOR

Publication Number WO/1996/002401
Publication Date 01.02.1996
International Application No. PCT/US1995/008704
International Filing Date 12.07.1995
Chapter 2 Demand Filed 15.02.1996
IPC
B60N 2/23 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
2Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
02the seat or part thereof being movable, e.g. adjustable
22the back-rest being adjustable
23by linear screw mechanisms
CPC
B60N 2/233
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
2Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
02the seat or part thereof being movable, e.g. adjustable
22the back-rest being adjustable
23by ; linear actuators, e.g.; linear screw mechanisms
233by linear screw mechanisms
B60N 2/929
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
2Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
90Details or parts not otherwise provided for
919Positioning and locking mechanisms
929linear
Y10T 74/19735
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
74Machine element or mechanism
19Gearing
19642Directly cooperating gears
19698Spiral
19702Screw and nut
19735Nut disengageable from screw
Applicants
  • ITT AUTOMOTIVE, INC. [US/US]; 3000 Uniertsity Drive Auburn Hills, MI 48326-2356, US
Inventors
  • PICKLES, Joseph; US
Agents
  • HANLON, William, M., Jr.; Young and Basile P.C. Suite 624 3001 West Big Beaver Troy, MI 48084-3107, US
Priority Data
08/275,98115.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) INFINITELY ADJUSTABLE LINEAR ACTUATOR
(FR) ACTIONNEUR LINEAIRE REGLABLE EN CONTINU
Abstract
(EN)
A linear actuator (210) includes a housing (220) surrounding a rotatable element (270) fixed about a rotatable shaft (232). First and second moving members (290, 292) are reciprocally mounted within the housing (220). The moving members (290, 292) are movable between a first position engaging and spacing the rotatable element (270) from bearing surfaces (256, 258) at opposite ends of the housing (220) to prevent rotation of the rotatable element (270) and the shaft (232), and a second position spaced from the rotatable element (270) to enable the rotatable element (270) to move axially into engagement with one of the bearings (290, 292) to permit free rotation of the rotatable element (270) and the shaft (232). Pairs of angularly extending ramp surfaces (294, 296) on each moving member (290, 292) slide within angled guide slots (266, 268) in the housing (220) to guide the moving members (290, 292).
(FR)
Un actionneur linéaire (210) comprend un boîtier (220) entourant un élément rotatif (270) fixé autour d'un arbre rotatif (232). Des premier et second éléments mobiles (290, 292) sont montés en sens inverse l'un par rapport à l'autre dans le boîtier (220). Les éléments mobiles (290, 292) se déplacent entre une première position, dans laquelle ils viennent en contact avec l'élément rotatif (270) et l'écartent des surfaces de roulement (256, 258) au niveau des extrémités opposées du boîtier (220) afin d'empêcher l'élément rotatif (270) et l'arbre (232) de tourner, et une seconde position, dans laquelle ils sont écartés de l'élément rotatif (270) afin de permettre à celui-ci de se déplacer axialement et de venir en contact avec un des roulements (290, 292), cela afin de permettre la libre rotation de l'élément rotatif (270) et de l'arbre (232). Des paires de rampes (294, 296), s'étendant avec une certaine inclinaison sur chaque élément mobile (290, 292), coulissent dans des rainures de guidage angulaires (266, 268) ménagées dans ledit boîtier (220) pour guider les éléments mobiles (290, 292).
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