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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0568615 (1984-01-06) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 486 인용 특허 : 5 |
A solenoid drive apparatus for driving a lead screw of an External Infusion Pump (1) having a housing (302), solenoid winding (356) within the housing (302), a solenoid armature (358) which is driven by the field of the solenoid winding (356), push rod (362) which is driven by the armature (358), pa
A solenoid drive apparatus for driving a lead screw of an External Infusion Pump (1) having a housing (302), solenoid winding (356) within the housing (302), a solenoid armature (358) which is driven by the field of the solenoid winding (356), push rod (362) which is driven by the armature (358), pawn (314) which is driven by push rod (362), a first pawl (320) which is driven by pawn (314) and a second pawl (326) which is an antibacklash device, a ratchet wheel (318) having teeth (319) around its periphery and engaged by the first pawl (320) and the second pawl (326) and the drive shaft (316) which is drawn by the ratchet of the ratchet wheel (318).
A drive apparatus comprising: a housing; solenoid electrical means within said housing for controlling a mechanical output of said drive apparatus; drive transmission means within said housing responsive to said solenoid electrical means, said drive transmission means including an actuator member an
A drive apparatus comprising: a housing; solenoid electrical means within said housing for controlling a mechanical output of said drive apparatus; drive transmission means within said housing responsive to said solenoid electrical means, said drive transmission means including an actuator member and a follower member that linearly move in a first linear direction in response to electrical energy applied to said solenoid electrical means; driver means within said housing responsive to said drive transmission means, said driver means translating the motion in the first linear direction to motion in a second linear direction; shaft means disposed through a portion of said housing; ratchet means disposed at a first end of said shaft means; ratchet drive means slidably attached to said housing having a first portion connected to said driver means and having a second portion engaging said ratchet means, the first portion of said ratchet drive means being driven with a first force by said driver means in said second linear direction by the response of said solenoid electrical means, thereby causing said ratchet means to rotate, thereby turning said shaft means; stop means rotatably attached to said housing and having at least one portion engaging said ratchet means; first biasing means for biasing said ratchet drive means into engagement with said ratchet means with a second force that is less than said first force; and second biasing means for biasing said portion of the stop means into engagement with said ratchet means; wherein after said ratchet drive means has been displaced a maximum amount, and after said solenoid electrical means has ceased to drive said ratchet drive means to its maximum displaced position, said first biasing means, in the absence of said first force, causes said ratchet drive means, driver means, follow member and actuator means to assume a position each means and member had prior to being displaced by said solenoid electrical means.
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