Throttle shaft assembly and method of attachment of said shaft to a throttle body

(19)

(11)

EP 1 083 313 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	05.09.2001 Bulletin 2001/36

(43)	Date of publication A2:
	14.03.2001 Bulletin 2001/11

(21)	Application number: 00119112.1

(22)	Date of filing: 04.09.2000

(51)	International Patent Classification (IPC)⁷: F02D 9/02, F02D 9/10

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

08.09.1999 US 152793 P

(71)	Applicant: SIEMENS CANADA LIMITED
	Windsor, Ontario N8W 5B1 (CA)

(72)	Inventor:
	Powell, Jeffrey Belle River, Ontario NOR 1AO (CA)

(74)	Representative: Allen, Derek et al
	Siemens Shared Services Limited, Intellectual Property Department, Siemens House, Oldbury Bracknell, Berkshire RG12 8FZ Bracknell, Berkshire RG12 8FZ (GB)

(54)	Throttle shaft assembly and method of attachment of said shaft to a throttle body

(57) A method and apparatus is provided for the attachment of a throttle shaft to a throttle body. A throttle shaft, a spring, and a cap retainer, are temporarily assembled as a throttle shaft subassembly. A set of locking members extend from the cap retainer to engage a set of locking surfaces adjacent the throttle shaft to retain the spring in tension. The cap retainer fits onto a boss extending from the throttle body and is lockable thereto by a set of fingers which are received into engagement recesses located on the boss. As the shaft subassembly is guided into the throttle body, the cap retainer is rotated by the engagement surfaces and the locking members are disengaged from the locking surfaces to at least partially unload the spring to mount the shaft.

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