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US 4,225,027 AGranted
Electromagnetic spring-wound clutch
AssigneeDiesel Kiki Co., Ltd.
InventorsHideyasu Takefuta, Kohki Iwata, Toshio Yamaguchi
Life of this patent
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AssigneeDiesel Kiki Co., Ltd.
InventorsHideyasu Takefuta, Kohki Iwata, Toshio Yamaguchi
Estimating the term…
Rotary input and output members (19), (28) are axially aligned with each other and a rotary clutch disc (32) is axially aligned with and frictionally engageable with the input member (19). A coil-wound spring (33) is wound around the input and output members (19), (28) and connected at its ends to the clutch disc (32) and output member (28) respectively. An electromagnetic coil (26), which energized, attracts the clutch disc (32) into frictional engagement with the input member (19) and causes the coil-wound spring (33) to tightly wind around and embrace the input and output members (19), (28), thereby drivingly connecting the same together. A sleeve (41) formed with a circumferential gap (41a) is disposed between the coil-wound spring (33) and the input member (19) which provides the clutch (11) with a desirable amount of slippage prior to full engagement, evenly distributes the radially inward force applied to the input and output members (19), (28 ) by the coil-wound spring (33) and prevents the coil-wound spring (33) from entering an axial space (42) between the input and output members (19), (28).
An electromagnetic spring-wound clutch including a rotary input member, a rotary output member coaxial with the input member, a rotary clutch disc axially aligned with the input member and frictionally engageable therewith, a coil-wound spring wound around the input member and output member and being connected at its ends to the clutch disc and output member respectively and an electromagnetic coil which, when energized, attracts the clutch disc into frictional engagement with the input member, characterized by comprising:
An electromagnetic spring-wound clutch including a rotary input member, a rotary output member coaxial with the input member, a rotary clutch disc axially aligned with the input member and frictionally engageable therewith, a coil-wound spring wound around the input member and output member and being connected at its ends to the clutch disc and output member respectively and an electromagnetic coil which, when energized, attracts the clutch disc into frictional engagement with the input member, characterized by comprising:
An electromagnetic spring-wound clutch including a rotary input member, a rotary output member coaxial with the input member, a rotary clutch disc axially aligned with the input member and frictionally engageable therewith, a coil-wound spring wound around the input member and output member and being connected at its ends to the clutch disc and output member respectively and an electromagnetic coil which, when energized, attracts the clutch disc into frictional engagement with the input member, characterized by comprising:
An electromagnetic spring-wound clutch including a rotary input member, a rotary output member coaxial with the input member, a rotary clutch disc axially aligned with the input member and frictionally engageable therewith, a coil-wound spring wound around the input member and output member and being connected at its ends to the clutch disc and output member respectively and an electromagnetic coil which, when energized, attracts the clutch disc into frictional engagement with the input member, characterized by comprising:
An electromagnetic spring-wound clutch including a rotary input member, a rotary output member coaxial with the input member, a rotary clutch disc axially aligned with the input member and frictionally engageable therewith, a coil-wound spring wound around the input member and output member and being connected at its ends to the clutch disc and output member respectively and an electromagnetic coil which, when energized, attracts the clutch disc into frictional engagement with the input member, characterized by comprising:
Dependencies are inferred from the claim text.