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Pub. No.:    WO/1981/003205    International Application No.:    PCT/US1981/000604
Publication Date: 12.11.1981 International Filing Date: 06.05.1981
F03G 1/00 (2006.01)
Priority Data:
148554 09.05.1980 US
Abstract: front page image
(EN)The energy recovery device (10) includes a housing (32) having a central shaft (26) which is connected to a lever (20) operating a work-load system (12) capable of generating work-load forces. The central shaft (26) is also connected to a disk (36) having four posts (40) generally parallel to the shaft (26) initially located at positions corresponding to the four major points of a compass. Within each corner of the housing (32), a helically coiled spring (46) is positioned over a support post (42). Each spring (46) has two extending arms (48, 50) which contact two respective adjacent posts (40) on the disk so as to maintain the spring (46) under tension. When the lever (20) is at the neutral position, i.e., when no workload forces are generated, the recovery forces generated by the four springs (46) within the housing (32) are generally balanced. As the lever (20) is displaced from the neutral position by a driving force, the disk (36) rotates whereby the angular displacement between the arms (48, 50) of any spring (46) decreases. Once the disk (36) is displaced, the spring forces aid in continuing displacement of the disk (36). Simultaneously the work-load system (12) generates forces which oppose any displacement. The springs (46) are preferably configured and dimensioned so that, at any given displacement of the lever (20) from the neutral position, the recovery forces generally counterbalance the work-load forces. Thus the lever (20) will remain at a given displacement when the driving force applied to the lever (20) is removed. Additionally, the counterbalancing of forces permits continued displacement of the lever (20) with a minimal and constant driving force.
(FR)Le dispositif de recuperation d'energie comprend un boitier (32) possedant un arbre central (26) connecte a un levier (20) actionnant un systeme (12) de charge de travail pouvant produire des forces de charge de travail. L'arbre central (26) est aussi connecte a un disque (36) possedant quatre tiges (40) generalement paralleles a l'arbre (26) situees initialement en des positions correspondantes aux quatres points principaux d'une boussole. A l'interieur de chaque coin du boitier (32), un ressort (46) enroule helicoidalement est positionne sur une tige de support (42). Chaque ressort (46) possede deux bras (48, 50) en extension en contact avec deux tiges adjacentes respectives (40) sur le disque de maniere a maintenir le ressort (46) sous tension. Lorsque le levier (20) se trouve en position neutre, c'est-a-dire, lorsqu'aucune force de charge de travail n'est produite, les forces de recuperation produites par les quatre ressorts (46) a l'interieur du boitier (32) sont en general equilibrees. Lorsque le levier (20) est deplace de la position neutre par une force d'entrainement, le disque (36) tourne provoquant la reduction du deplacement angulaire entre les bras (48, 50) de chaque ressort (46). Lorsque le disque (36) est deplace, les forces de ressort facilitent la continuation du deplacement du disque (36). Simultanement le systeme de charge de travail (12) produit des forces qui s'opposent a tout deplacement. Les ressorts (46) sont de preference concus et dimensionnes de maniere qu'a tout deplacement donne du levier (20) de la position neutre, les forces de recuperation compensent generalement les forces de charge de travail. Le levier (20) reste ainsi a un deplacement donne lorsque la force d'entrainement appliquee au levier (20) disparait. En outre, l'equilibrage des forces permet un deplacement continu du levier (20) avec une force d'entrainement minime et constante.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)