Torque-limit signal system for filler neck cap
First Claim
1. A torque-limit signal cap for a filler neck, the cap comprising an axially outer portion rotatable about an axis of rotation, an axially inner portion adapted to close the filler neck, and a torque-limit signaler coupled to the axially outer and inner portions and configured to disable temporarily transmission of torque about the axis of rotation in a cap-advancing direction from the axially outer portion to the axially inner portion during rotation of the axially outer portion about the axis of rotation in the cap-advancing direction to signal a person rotating the outer portion that the axially inner portion is seated in a filler neck-closing position, the torque-limit signaler comprising a first drive receiver coupled to the axially inner portion for movement relative to the axially inner portion between an axially raised position and an axially lowered position, a first lug coupled to the axially outer portion to rotate therewith and contact the first drive receiver in the raised position during rotation of the axially outer portion about the axis of rotation in the cap-advancing direction to cause the axially inner portion to rotate about the axis of rotation, the first lug being formed to include an inclined first drive surface configured to urge the first driver receiver in an axially inner direction from the axially raised position to the axially lowered position to allow limited lost-motion rotation of the axially outer portion relative to the axially inner portion once torque in excess of a predetermined amount is applied to the axially outer portion about the axis of rotation during continued rotation of the axially outer portion about the axis of rotation in the cap-advancing direction, a second lug coupled to the axially outer portion to rotate therewith and formed to include a second drive surface, and a second drive receiver coupled to the axially inner portion and located to contact the second drive surface provided on the second lug after limited lost-motion rotation of the axially outer portion relative to the axially inner portion about the axis of rotation in the cap-advancing direction to apply a clockwise torque to the axially inner portion to reestablish torque transmitting connection in the cap-advancing direction without further lost motion and to provide a torque-limit signal indicating to a person rotating the axially outer portion about the axis of rotation in the cap-advancing direction that such limited lost-motion rotation of the axially outer portion relative to the axially inner portion has occurred and sufficient torque has been applied to the axially outer portion about the axis of rotation in the cap-advancing direction during installation of the axially inner portion in a filler neck to seat the axially inner portion in a filler neck-closing position in the filler neck.
3 Assignments
0 Petitions
Accused Products
Abstract
A torque-limit signal cap (10) for a filler neck (14) includes an axially outer portion (16), a filler neck closure (12), and a torque-limit signaler (20). The torque-limit signaler (20) operates during cap installation to interrupt temporarily a driving connection established between the axially outer portion (16) and the closure (12) to provide a tactile and/or auditory signal to a user turning the cap (10) in the filler neck (14) indicating that sufficient torque has been applied to the axially outer portion (16) to seat the closure (12) in a filler neck-closing position in the filler neck (14).
20 Citations
32 Claims
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1. A torque-limit signal cap for a filler neck, the cap comprising
an axially outer portion rotatable about an axis of rotation, an axially inner portion adapted to close the filler neck, and a torque-limit signaler coupled to the axially outer and inner portions and configured to disable temporarily transmission of torque about the axis of rotation in a cap-advancing direction from the axially outer portion to the axially inner portion during rotation of the axially outer portion about the axis of rotation in the cap-advancing direction to signal a person rotating the outer portion that the axially inner portion is seated in a filler neck-closing position, the torque-limit signaler comprising a first drive receiver coupled to the axially inner portion for movement relative to the axially inner portion between an axially raised position and an axially lowered position, a first lug coupled to the axially outer portion to rotate therewith and contact the first drive receiver in the raised position during rotation of the axially outer portion about the axis of rotation in the cap-advancing direction to cause the axially inner portion to rotate about the axis of rotation, the first lug being formed to include an inclined first drive surface configured to urge the first driver receiver in an axially inner direction from the axially raised position to the axially lowered position to allow limited lost-motion rotation of the axially outer portion relative to the axially inner portion once torque in excess of a predetermined amount is applied to the axially outer portion about the axis of rotation during continued rotation of the axially outer portion about the axis of rotation in the cap-advancing direction, a second lug coupled to the axially outer portion to rotate therewith and formed to include a second drive surface, and a second drive receiver coupled to the axially inner portion and located to contact the second drive surface provided on the second lug after limited lost-motion rotation of the axially outer portion relative to the axially inner portion about the axis of rotation in the cap-advancing direction to apply a clockwise torque to the axially inner portion to reestablish torque transmitting connection in the cap-advancing direction without further lost motion and to provide a torque-limit signal indicating to a person rotating the axially outer portion about the axis of rotation in the cap-advancing direction that such limited lost-motion rotation of the axially outer portion relative to the axially inner portion has occurred and sufficient torque has been applied to the axially outer portion about the axis of rotation in the cap-advancing direction during installation of the axially inner portion in a filler neck to seat the axially inner portion in a filler neck-closing position in the filler neck.
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20. A torque-limit signal cap for a filler neck, the cap comprising
a handle rotatable about an axis of rotation, a closure adapted to close the filler neck, a torque-transmission member rotatable about the axis of rotation, the torque-transmission member being positioned to lie between the handle and the closure, and signal means for allowing only limited lost-motion rotation of the torque-transmission member relative to the closure through a predetermined acute angle from a first united position wherein the closure is coupled to the torque-transmission member for rotation therewith to a second united position wherein the closure is again coupled to the torque-transmission member for rotation therewith during continued rotation of the handle in a cap-advancing direction about the axis of rotation following an initial rotation of the handle, torque-transmission member, and closure together as a unit in the first united position in the cap-advancing direction about the axis of rotation to signal a person rotating the handle to cease rotating the handle in the cap-advancing direction so that torque is no longer applied to the handle once the torque-transmission member has been moved relative to the closure to assume the second united position.
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29. A torque-limit signal cap for a filler neck, the cap comprising
an axially outer portion rotatable about an axis of rotation, an axially inner portion adapted to close the filler neck, and a torque-limit signaler coupled to the axially outer and inner portions and configured to provide means for temporarily interrupting a driving connection established between the axially outer and inner portions to cause the axially outer portion to rotate through a predetermined acute angle about the axis of rotation relative to the axially outer portion once torque in excess of a predetermined amount is applied to the axially outer portion about the axis of rotation in a cap-advancing direction to provide a limited lost-motion signal to a user rotating the axially outer portion during installation of a cap in a filler neck to indicate that sufficient torque has been applied to the axially outer portion during installation of the axially inner portion in a filler neck to seat the axially inner portion in a filler neck-closing position in the filler neck and for reestablishing the driving connection between the axially outer and inner portions after the axially outer portion has been rotated through the predetermined acute angle to discontinue provision of the limited lost-motion signal to the user.
Specification