US 9,752,628 B2Granted

Self-locking clutch mechanism

AssigneeThe Gates Corporation

InventorsBenjamin R. Langhorst, Dean Schneider, Alexander Serkh

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Abstract

A self-locking clutch mechanism comprising a base, an output member journalled to the base, a first spring engaged between the base and the output member, the first spring exerting a first spring force in a first direction, a clutch spring engaged with an intermediate member and frictionally engaged with a base cylindrical surface, an input member rotationally engaged with the base, the input member intermittently engagable with the clutch spring through a control member such that the clutch spring is temporarily released from the base cylindrical surface upon a rotary movement of the control member in a first direction, the intermediate member rotates upon release of the clutch spring from the base cylindrical surface, and a second spring engaged between the intermediate member and the output member, the second spring exerting a second spring force opposite the first spring force.

Claims6

Dependent claims

A self-locking clutch mechanism comprising:

a base (301);
an output member (604) journalled to the base;
a first spring (701) engaged between the base and the output member, the first spring exerting a first spring force in a first direction;
a clutch spring (302) engaged with an intermediate member (205) and frictionally engaged with a base cylindrical surface (303);
an input member (202) rotationally engaged with the base;
the input member (202) intermittently engagable with the clutch spring through a control member (201) such that the clutch spring is temporarily released from the base cylindrical surface upon a rotary movement of the control member in the first direction;
the intermediate member rotates upon release of the clutch spring from the base cylindrical surface, the clutch spring is releasable from the base cylindrical surface upon the intermediate member being urged by the control member in a second direction opposite the first direction;
and
a second spring (501) engaged between the intermediate member and the output member, the second spring exerting a second spring force opposite the first spring force.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/959,731Filed 4 Dec 2015
Published: US 2017/0159728 A18 Jun 2017
Granted: 5 Sep 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F16D 41/206
With expandable or contractable clamping ring or band: having axially adjacent coils, e.g. helical wrap-springs
F16D 13/08
Friction clutches: with a helical band or equivalent member, which may be built up from linked parts, with more than one turn embracing a drum or…
F16D 13/12
Friction clutches: with an expansible band or coil co-operating with the inner surface of a drum or the like
F16D 41/02
Freewheels or freewheel clutches: disengaged by contact of a part of or on the freewheel or freewheel clutch with a stationarily-mounted member

Family

US 2017/0159728 A1Pre-grant publication · published 8 Jun 2017
US 9,752,628 B2This patent

From the US filing history. Foreign family members aren’t listed.

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