The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9463960 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 11, 2016

Filed:

May. 15, 2013
Applicant:

Konecranes Plc, Hyvinkää, FI;

Inventors:

Ville Pantsar, Helsinki, FI;

Risto Vilppo, Tampere, FI;

Pekka Helenius, Riihimäki, FI;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66C 1/36 (2006.01); F16B 45/02 (2006.01);
U.S. Cl.
CPC ...
B66C 1/36 (2013.01); F16B 45/02 (2013.01);
Abstract

A lifting hook includes a hook body with a hook stem; a tip; a safety latch with a fastening end and a free latch end, the fastening end being pivotally fastened close to the stem for movement between an open and a closed position, the safety latch being in the open position substantially against the inside of the hook body in a position that leaves the hook jaw open while in a closed position the latch end extends across the hook jaw to the tip of the hook, closing the jaw from the inside; and an actuator of the safety latch arranged between the safety latch and the hook stem, the actuator of the safety latch including a delay mechanism configured to return the safety latch from the open position to the closed position in a delayed manner. A safety latch of a lifting hook is also provided.


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