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US 6,415,679 B1Granted
Manual drive for positioning precision instruments
OwnerChris D. Chiodoinventor
Life of this patent
Estimating the term…
Abstract
A carriage adapted for carrying a laboratory instrument such as a pipette, electrode, or syringe is driven by a drive shaft in the form of a lead screw. The lead screw is selectively driven by a high speed drive wheel or by a low speed drive wheel. The drive wheels are coaxially mounted around the drive shaft and concentrically and coaxially arranged with respect to one another. The drive shaft and the two drive wheels all rotate in unison in the same rotary direction.
Claims20
A dual drive system for a positioning apparatus, comprising:
- a slide adapted to carry an instrument;
- a drive member connected to said slide;
- a pinion gear provided on said drive member;
- a first hand operated drive wheel fixed to said drive member;
- a second hand operated drive wheel carried by said slide;
- a ring gear mounted on said second drive wheel;
- and
- a gear train rotationally coupling said ring gear and said pinion gear.
5 more elements
A precision positioning apparatus, comprising:
- a base;
- a slide assembly supported on said base;
- an instrument carried by said slide assembly;
- and
- a hand operated dual drive system for accurately moving said instrument along said slide assembly;
- said dual drive system comprising an axially movable drive shaft connected to said slide assembly, and first and second drive wheels connected to said drive shaft such that said first and second drive wheels and said drive shaft each rotate together in a common direction.
3 more elements
Dependencies are inferred from the claim text.