Combustion air conduit coupling
AssigneeSiemens Canada Limited
InventorStephen F. Bloomer
Life of this patent
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Abstract
A coupling is disclosed for connecting conduits that carry combustion air to an internal combustion engine. Two conduits are provide, a first one having an associated locking collar with slots and flexible locking fingers, and a second one having several outwardly facing pins and catches located on an outer surface. The pins are received in the slots and the two conduits are rotated with respect to each other. The catches and locking fingers engage to prevent the two conduits from being pulled apart. Both conduits and locking collar are preferably made of plastic, with the second one and its associated locking collar being simltaneously and integrally molded. A resilient seal may be located between the two components to reduce or eliminate air leakage.
Claims14
A coupling for joining two polymeric air conduits that conduct combustion air to an internal combustion engine, comprising:
- a first integrally molded cylindrical polymeric conduit further comprising,
- a first cylindrical body having a first inner surface with a first inner diameter, a first outer surface with a first outer diameter, a longitudinal axis, and a first open end substantially perpendicular to the longitudinal axis,
- a plurality of locking pins extending radially outward from the outer surface of the conduit and spatially distributed about the circumference of the cylindrical body, surface;
- and
- a plurality of catches extending radially outward from the outer surface, said plurality of catches spaced longitudinally from said plurality of locking pins;
- and
- a second integrally molded cylindrical polymeric conduit further comprising,
- a second cylindrical body having a second inner diameter and a second end substantially parallel to the longitudinal axis, and
- a locking collar integrally molded with the second cylindrical body and having a collar inner diameter, a plurality of slots each of which configured to receive one of the plurality of locking pins, and a plurality of flexible fingers disposed to engage the plurality of catches.
A coupling for joining two air conduits that conduct combustion air in an internal combustion engine, comprising:
- a first cylindrical polymeric conduit having a first longitudinal axis further comprising,
- a first cylindrical body having a first inner surface with a first inner diameter, a first outer surface with a first outer diameter, a longitudinal axis and a first open end substantially perpendicular to the longitudinal axis,
- a plurality of locking pins extending radially outward from the outer surface of the cylindrical body and spatially distributed about the circumference of the cylindrical body and disposed a first distance away from the open end,
- a plurality of catches extending radially outward from the outer surface and disposed a distance greater than the first distance away from the first end;
- and
- a second cylindrical polymeric conduit having a second longitudinal axis and further comprising,
- a second cylindrical body having a second inner diameter and a second end substantially parallel to the longitudinal axis, and
- a locking collar integrally molded with the second cylindrical body and having a collar inner diameter, a plurality of slots each of which are configured to receive one of the plurality of locking pins and a plurality of flexible fingers disposed to engage the plurality of catches.
Dependencies are inferred from the claim text.