Abstract:
A tightening device having a function to apply an energizing force, in tightening direction, to a tightened material comprising bolts, nuts, and screws tightening, by threading, a tightened object for long period continuously from the beginning of tightening, the device comprising an engaged part engaged with the tightened material and formed integrally with one end part of the energizing member energizing the tightened material tightened to the tightened object in the direction of tightening, and a switching member for switching the constraint and activation of the energizing force to the tightened material and linked with the energizing member, characterized in that the switching member holds the engaged part and the other end part side of the energizing member to arrest the energizing force and is detached from the engaged part and the other end part side of the energizing member to operate the energizing force, whereby the switching member can stably arrest the energizing force of the energizing member to the tightened material, and the switching member can be removed from around the energizing member when the energizing force of the energizing member to the tightened material is activated,
Abstract:
A barrel gear 1 as a driving mechanism of an electronic control mechanical timepiece has a mainspring 1A having a surface of elastic material coated with a film made of DLC thin film. The mainspring 1A has a superior anti-corrosion property and reduced slide resistance while sufficiently securing both of toughness and rigidity on account of the film, so that proportional limit thereof can be increased to increase energy accumulated in the mainspring 1A.
Abstract:
From a spring band (6), a first winding (18) is formed which is comprised of turns which are arranged flat on top of each other. A straight terminal portion (6A) not yet wound of the spring band is folded in the direction opposite to the flexure direction of the winding turns (18), in an arc of a circle to form a terminal arc (6B) directly connected by a continuous and progressive junction to the outer turn of the winding (18). The curvature radius of the terminal arc (6B) coincides with the radius of a winding mandrel (19) on which is wound the spring band (6) after having been subjected to a heat treatment, and in the direction opposite to the flexure direction of the turns of the first winding (18). The thus formed second winding (20) is provided to be inserted as a driving spring into a spring casing, the end (7) of the spring band (6) situated outside on the second winding (20) being connected to the circumferential wall of the spring casing and the terminal arc (6B) now arranged inside being connected to a core rotating in the spring casing and of which the radius coincides also with the curvature radius of the terminal arc (6B). The spring core may be coupled to a winder drum, for example for a safety belt. The driving spring thus obtained is differentiated by a proportionally high initial torsion moment, as soon as a small member of revolutions of the spring core is reached.
Abstract:
The invention relates to a compensating balance-spring (1) for a thermally compensated resonator with a balance and spring assembly, comprising a core (9a, 9b, 9c, 9d, 9e, 9f) formed from at least one non-metal material (11a, 11b, 13b, 15b, 11c, 17c, 19c, 11d, 13d, 15d, 17d, 19d, 11e, 13e, 15e, 17e, 19e, 11f, 21 f). According to the invention, the core (9a, 9b, 9c, 9d, 9e, 9f) is partially coated with at least one layer (7) which is humidity-stable in order to render the compensating balance-spring (1) less sensitive to climatic variations. The invention relates to the field of timepieces.
Abstract:
Das Linearlager (3) umfasst eine Mehrzahl von konzentrisch angeordneten Federn (2), wobei jede Feder (2) als eine Tellerfeder ausgestaltet ist mit einem Befestigungsteil (2a) und einer im Zentrum (Z) angeordneten Bohrung (2c), wobei jede Feder (2) zudem einen Federarm (2b) aufweist, welcher ausgehend vom Befestigungsteil (2a) in einem Endabschnitt (2g) endet, wobei der Endabschnitt (2g) die Bohrung (2c) aufweist, und wobei die Bohrung (2c) konzentrisch zum Befestigungsteil (2a) angeordnet ist, wobei jede Feder (2) eine senkrecht zum Befestigungsteil (2a) verlaufende Bewegungsrichtung (B) aufweist, und wobei die Federn (2) in Bewegungsrichtung (B) nacheinander folgend angeordnet sind, wobei der Federarm (2b) einen konzentrisch zur Bohrung (2c) verlaufenden Federarmabschnitt (2ba) aufweist, der sich entlang eines Winkelbereichs (γ) zwischen 100° und 270°, und vorzugsweise sich entlang eines Winkelbereichs (γ) zwischen 180° und 300° erstreckt, wobei das Befestigungsteil (2a) zumindest teilweise ringförmig ausgestaltet ist, wobei der Federarmabschnitt (2ba) in Bezüglich der Bohrung (2c) radialer Richtung eine Breite (2k) aufweist, welche zumindest fünf Mal grösser ist als die Dicke (2i) des Federarms (2b), und wobei die Breite (2k) des Federarmabschnitts (2ba) derart ausgestaltet ist, dass dieser bezüglich dem ringförmigen Befestigungsteil (2a) und dem Endabschnitt (2g) unter Ausbildung eines seitlichen Spaltes (2d) verläuft.
Abstract:
Die Erfindung betrifft einen Nockenwellenversteller (1, 51) für eine Brennkraftmaschine, umfassend einen drehfest mit einer Kurbelwelle verbindbaren Stator (5), einen in dem Stator (5) um eine Drehachse drehbar gelagerten Rotor, einen Dichtdeckel (7, 53) zur Leckageminimierung, sowie ein Federelement (9, 59) zur Positionierung des Rotors gegenüber dem Stator (5). Hierbei ist das Federelement (9, 59) über einen Federbügel (3, 41) in axialer Richtung am Dichtdeckel (7, 53) gehalten. Die Verwendung eines Federbügel (3, 41) bietet eine kostenneutrale und gewichtsreduzierte Möglichkeit zur zuverlässigen Positionierung des Rotors gegenüber dem Stator (5).
Abstract:
A power, motor, or clock spring featuring an integral retainer that prevents the spring from returning to its relaxed state. The integral retainer includes at least two of the coils of the spring being bonded together either through direct bond or via a welding material. The formation of an integral retainer in which the bonded coils of the spring itself acts as the retainer, creates a power spring that is easier and safer to handle and less expensive to create. The bond can be located only at the outermost point of the spring bonding the two outermost coils together adjacent an outer hook of the power spring.
Abstract:
A support device comprises a column (3) in form of a lower telescopic pipe (6) for supporting against a base during use, and an upper telescopic pipe (5), which is displaceable disposed in the lower telescopic pipe (6), and at least one spring (7) for application of a force on the lower telescopic pipe (5) in same direction as the gravity and on the upper telescopic pipe (5) in opposite direction of the gravity, wherein the at least one spring (7) is a tension spring with a constant spring force, which can be modified to a different constant size. The support device is suitable for serving as a telescopic table leg for a height adjustable table, which easily, comfortably and safely can be adjusted. Additionally, the support device has a simple and inexpensive design.