B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
B60C 23/12 (2006.01)
Patent
CA 2632989
The invention relates to an air supply apparatus comprising an air pump capable of supplying compressed air to an air chamber on the basis of rotation of a wheel; restriction means, provided outside a pump chamber of the air pump, for restricting the supply of compressed air from the pump chamber to the air chamber when the pressure of compressed air supplied from the pump chamber to the air chamber reaches a first set value; adjustment means for adjusting the first set value; and a relief valve which releases compressed air to the atmosphere wherein the pressure of compressed air supplied from the pump chamber to the air chamber is equal to or greater than a second set value greater than the first set value, wherein the restriction means is a change valve configured such that when the pressure of compressed air supplied from the pump chamber to the air chamber is less than the first set value, the change valve restricts air flow from the pump chamber to the atmosphere, and permits air flow from the pump chamber into the air chamber; and when the pressure of compressed air supplied from the pump chamber to the air chamber is equal to or greater than the first set value, the change valve permits air flow between the pump chamber and the atmosphere, and restricts air flow between the pump chamber and the air chamber; and the adjustment means can adjust the first set value and the second set value simultaneously. The apparatus can supply compressed air to an air chamber such as a tire.
L'invention concerne un dispositif d'alimentation en air (A) comprenant: une pompe à air (20) permettant d'alimenter en air sous pression une chambre à air (chambre à air de pneumatique (Ra) d'une roue (B)) en fonction de la rotation de la roue (B); une valve de variation (30) placée à l'extérieur du corps (Ro) de la pompe à air (20) destinée à limiter l'alimentation en air sous pression du corps de la pompe (Ro) vers la chambre à air lorsque la pression de l'air sous pression alimenté par le corps de pompe (Ro) vers la chambre à air atteint une première valeur prédéfinie; et un dispositif de réglage (40) permettant de régler cette première valeur.
Borden Ladner Gervais Llp
Toyota Jidosha Kabushiki Kaisha
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