Title:
AUTOMATIC PISTON-GRIPPING APPARATUS AND PIPETTE COMPRISING THE SAME
Document Type and Number:
WIPO Patent Application WO/2023/179776
Kind Code:
A1
Abstract:
The present invention provides an automatic piston-gripping apparatus (100) and a pipette comprising the same. The automatic piston-gripping apparatus comprises a gripping mechanism (10), a holding shank (20), a first spring (30), and optionally a piston (40). The gripping mechanism (10) is arranged in the holding shank, (20) and the first spring (30) sleeves over the gripping mechanism (10) and is located between the gripping mechanism (10) and the holding shank (20). The piston-gripping apparatus (100) is configured for inserting a piston (40) from an end portion of the holding shank (20) that faces a collet (11) of the gripping mechanism (10) A locking ring (12) is arranged at a head of the collet (11). The end portion of the holding shank (20) is provided with a first limiting portion (21) for positioning the locking ring (12). The piston-gripping apparatus is configured for the collet (11) to extend out of the locking ring (12) when the locking ring (12) moves and/or moved to the first limiting portion (21) and to automatically grip the piston (40). The automatic piston-gripping apparatus (100) can quickly and adaptively grip the piston (40), and can produce a sound in the process of gripping the piston, this sound indicating a soon successful gripping, thereby avoiding a faulty operation by a user r.
Inventors:
LI WEIGUO (CN)
ZHANG DAWEI (CN)
XU JIANFEI (CN)
ZHANG DAWEI (CN)
XU JIANFEI (CN)
Application Number:
PCT/CN2023/083795
Publication Date:
September 28, 2023
Filing Date:
March 24, 2023
Export Citation:
Assignee:
METTLER TOLEDO CHANGZHOU MEASUREMENT TECHNOLOGY LTD (CN)
METTLER TOLEDO CHANGZHOU PREC INSTRUMENTS LTD (CN)
METTLER TOLEDO INT TRADING SHANGHAI CO LTD (CN)
METTLER TOLEDO CHANGZHOU PREC INSTRUMENTS LTD (CN)
METTLER TOLEDO INT TRADING SHANGHAI CO LTD (CN)
International Classes:
B01L3/02
Foreign References:
| EP0155087A2 | 1985-09-18 | |||
| FR2980123A1 | 2013-03-22 | |||
| FR2383704A1 | 1978-10-13 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE , LLC (CN)
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