Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.188/CHE/2012 A
(19) INDIA
(22) Date of filing of Application :17/01/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : FUEL PUMP
(51) International classification :F16H (71)Name of Applicant :
(31) Priority Document No
:2011- 1)DENSO CORPORATION
11912 Address of Applicant :1-1, SHOWA-CHO, KARIYA-CITY,
(32) Priority Date :24/01/2011 AICHI-PREF., 448-8661 Japan
(33) Name of priority country :Japan (72)Name of Inventor :
(86) International Application No
Filing Date
:NA
:NA
1)SUZUKI, MASASHI
(87) International Publication No : NA
(61) Patent of Addition to Application Number
Filing Date
:NA
:NA
(62) Divisional to Application Number
Filing Date
:NA
:NA
(57) Abstract :
First arid second recessed portions (38a, 38b, 39a, 39b) are respectively formed on first and second wall surfaces (37a, 37b) of a
cam chamber (29), in order that a plunger head (19) and a coil spring (32) would not come in touch with the first and second wall
surfaces (37a, 37b) even in such a virtual situation. In the virtual situation, it is supposed that the plunger head (19) would be
separated from a plunger (13), the plunger head (19) remains in contact with a contact surface (31) of a cam ring (23) 50 that the
plunger head (19) would not move relative to the contact surface (31), and a cam member (22) would be continuously rotated.
No. of Pages : 30 No. of Claims : 7
The Patent Office Journal 21/06/2013 13948