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US 2003/0156958 A1Published application
Magnetic detent for rotatable knob
AssigneeTerumo Cardiovascular Systems Corporation
InventorMichael K. Domroese
Life of this patent
Estimating the term…
Abstract
A roller pump including a stator and a rotor assembly disposed within the stator. The rotor assembly includes a rotor hub, a first roller slide and a second roller slide slidingly disposed within the rotor hub. Each of the roller slides rotatably supports a roller. An occlusion adjustment knob for adjusting a radial position of the first and second roller slides and a magnetic detent assembly for providing an audible indicator as the occlusion adjustment knob is rotated.
Claims19
A roller pump comprising:
- a stator;
- a rotor assembly disposed within said stator, said rotor assembly including a rotor hub, a first roller slide and a second roller slide slidingly disposed within said rotor hub, each of said roller slides supporting a roller;
- an occlusion adjustment knob for adjusting a radial position of said first and second roller slides;
- and
- a magnetic detent assembly for providing an audible indicator as said occlusion adjustment knob is rotated.
2 more elements
A knob assembly comprising:
- a rotatable knob having an under surface and a top surface;
- a notched plate rotatable with said rotatable knob and arranged proximate to an under surface of said rotatable knob;
- a magnetic detent assembly disposed substantially stationary proximate to said notched plate;
- wherein rotation of said rotatable knob and said notched plate over said magnetic detent assembly provides a user with an audible indicator of rotation.
1 more element
A magnetic detent assembly comprising:
- a base member having a top surface and a bottom surface;
- at least one magnetically attractable member disposed in a recess in said base member;
- at least one magnet disposed in said base member;
- wherein said at least one magnetically attractable member is movably contained in said recess between said top surface of said base member and said at least one magnet.
1 more element
Dependencies are inferred from the claim text.