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1. WO1997028388 - ACTUATOR THAT ADJUSTS TO SIDE LOADS AUTOMATICALLY BY PIVOTING INTERNALLY

Publication Number WO/1997/028388
Publication Date 07.08.1997
International Application No. PCT/US1997/001260
International Filing Date 29.01.1997
Chapter 2 Demand Filed 08.07.1997
IPC
F16H 25/24 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
25Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
18for conveying or interconverting oscillating or reciprocating motions
20Screw mechanisms
24Elements essential to such mechanisms, e.g. screws, nuts
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
F16H 25/2454
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
25Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
18for conveying or interconverting oscillating or reciprocating motions
20Screw mechanisms
24Elements essential to such mechanisms, e.g. screws, nuts
2454Brakes; Rotational locks
Y10T 74/1868
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
18Mechanical movements
18568Reciprocating or oscillating to or from alternating rotary
18576including screw and nut
1868Deflection related
Y10T 74/18704
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
18Mechanical movements
18568Reciprocating or oscillating to or from alternating rotary
18576including screw and nut
18704Means to selectively lock or retard screw or nut
Applicants
  • P.L. PORTER CO. [US]/[US] (AllExceptUS)
  • HECKEL, Donald, T., Jr. [US]/[US] (UsOnly)
  • TRIBBETT, Kevin, Neil [US]/[US] (UsOnly)
  • EATON, James, Russell [US]/[US] (UsOnly)
  • STONE, Joseph, Mark [US]/[US] (UsOnly)
Inventors
  • HECKEL, Donald, T., Jr.
  • TRIBBETT, Kevin, Neil
  • EATON, James, Russell
  • STONE, Joseph, Mark
Agents
  • SLAVIN, Craig, A.
Priority Data
595,30001.02.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ACTUATOR THAT ADJUSTS TO SIDE LOADS AUTOMATICALLY BY PIVOTING INTERNALLY
(FR) ACTIONNEUR S'AJUSTANT AUTOMATIQUEMENT A DES CHARGES LATERALES PAR PIVOTEMENT INTERNE
Abstract
(EN)
The actuator includes a housing (12) and a gear nut (64) within the housing (12). A leadscrew (78) on which the gear nut (64) is threaded traverses the housing (12). As the leadscrew (78) moves axially, the gear nut (64) rotates. To prevent misalignment between the gear nut (64) and leadscrew (78), the gear nut's outer walls (74 and 76) and bearing surfaces (30 and 46) within the housing (12) permit the gear nut's axis of rotation to pivot in any direction along with any pivoting of the leadscrew (78), while allowing the gear nut (64) to rotate about the leadscrew (78). Therefore, if the leadscrew (78) is not aligned with the housing (12), the leadscrew will pivot the gear nut (64) so that the gear nut (64) remains aligned with the leadscrew (78) and movement of the leadscrew (78) can continue.
(FR)
L'actionneur de l'invention comprend un corps (12) et un écrou d'engrenage (64) logé dans le corps (12). Une vis sans fin (78), sur laquelle est enfilé l'écrou d'engrenage (64), traverse le corps (12). Lorsque la vis sans fin (78) se déplace axialement, l'écrou d'engrenage (64) tourne. Afin d'éviter le décentrage entre l'écrou d'engrenage (64) et la vis sans fin (78), les parois externes (74 et 76) de l'écrou d'engrenage et les surfaces d'appui (30 et 46) à l'intérieur du corps (12) permettent le pivotement de l'axe de rotation de l'écrou d'engrenage dans n'importe quel sens ainsi que tout pivotement de la vis sans fin (78), tout en permettant la rotation de l'écrou d'engrenage (64) autour de la vis sans fin (78). Par conséquent, si la vis sans fin n'est pas dans l'alignement du corps (12), elle fera pivoter l'écrou d'engrenage (64) de sorte qu'ils restent tous les deux dans le même alignement et que la vis sans fin (78) continue de se déplacer.
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