Pumps – Expansible chamber type – Pumping member position controlled port
Patent
1976-12-01
1978-07-11
Croyle, Carlton R.
Pumps
Expansible chamber type
Pumping member position controlled port
123139AA, 92128, 291564R, F04B 704, F04B 3910, F01B 2908
Patent
active
040998959
ABSTRACT:
A fuel pumping apparatus includes a plunger which passes centrally through an annular member and is movable axially relative to the member. The plunger is connected to the member so that angular movement of the member will impart angular movement to the plunger by means of a dog which passes within a slot formed in the member. The plunger is loaded outwardly by means of a strong spring and during assembly of the device it is necessary to compress the spring and align the dog with the slot continuing the compression of the spring when such alignment is obtained. This task is not easy but is facilitated by relieving one end surface of the member adjacent one side of the slot over an area such that alignment of the dog with the surface is compartively easy. During compression of the spring and movement of the plunger the dog will engage with said surface. When this has happened the pressure is eased slightly and the member moved angularly so that a side surface of the dog engages the side surface of the slot opposite the relieved portion of the member. Further compression of the spring can then take place.
REFERENCES:
patent: 2079821 (1937-05-01), Scribner
patent: 2322356 (1943-06-01), Hahn
patent: 2513883 (1950-07-01), Male
Croyle Carlton R.
Lucas Industries Limited
Ross Thomas I.
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