Expansible chamber devices – Piston – Side wall portion includes peripheral axially extending...
Patent
1981-02-20
1982-08-31
Hershkovitz, Abraham
Expansible chamber devices
Piston
Side wall portion includes peripheral axially extending...
92253, 277188A, F16J 912
Patent
active
043466478
ABSTRACT:
A pump piston construction for mud pumps and the like incorporating a resilient sealing member that establishes a pressure enhanced seal between the piston and pump cylinder. A bearing and anti-extrusion member composed of a relatively hard and flexible friction resistant plastic material is structurally interrelated with and may also be bonded to the sealing member. The anti-extrusion member is supported by an annular rigid flange of a piston hub about which both the sealing member and anti-extrusion member are received. The anti-extrusion member serves as a bearing to minimize wear of the piston and cylinder and is yielded radially outwardly responsive to fluid pressure transmitted through the resilient sealing member and functions to prevent extrusion of any of the resilient material of the sealing member into the space between the piston and cylinder.
REFERENCES:
patent: 1955157 (1934-04-01), Wayne
patent: 2063724 (1936-12-01), Cater
patent: 2656229 (1953-10-01), Stillwagon
patent: 2757994 (1956-08-01), Snyder
patent: 2808302 (1957-10-01), Bowerman
patent: 2819131 (1958-02-01), Lankford
patent: 4053166 (1977-10-01), Domkowski
patent: 4143586 (1979-03-01), Zitting
patent: 4281590 (1981-08-01), Weaver
Hershkovitz Abraham
Tangoren Ali
Weaver Manufacturing Company
LandOfFree
Piston construction for reciprocating pumps does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piston construction for reciprocating pumps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piston construction for reciprocating pumps will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2180043