Tool driving or impacting – Impacting devices – Hammer head comprises plural parts or diverse materials
Patent
1977-01-27
1978-07-04
Staab, Lawrence J.
Tool driving or impacting
Impacting devices
Hammer head comprises plural parts or diverse materials
173135, 173DIG1, 61 535, E02D 710
Patent
active
040983552
ABSTRACT:
An underwater hammer, of the gas discharge type, is provided with a circumferential control valve on the hammer ram to allow free flow of water and gas upwardly along the ram in the annular clearance between the ram and a tubular sleeve in which it is guided, but to interrupt the flow of water downwardly along the ram. The control valve allows the region under the ram to be purged of water when the ram is driven upwardly in the sleeve and it prevents water thereafter from flowing back down under the ram where it would otherwise cushion ram impact on an anvil.
REFERENCES:
patent: 2580203 (1951-12-01), Topanelian
patent: 2862475 (1958-12-01), Kinsman
patent: 3037208 (1962-06-01), Haberstump
patent: 3095046 (1963-06-01), Mori
patent: 3314241 (1967-04-01), Mayhall
patent: 3417828 (1968-12-01), Duyster et al.
patent: 3606297 (1971-09-01), Webb
patent: 3646598 (1972-02-01), Chelminski
patent: 3788402 (1974-01-01), Chelminski
patent: 3797585 (1974-03-01), Ludvigson
patent: 3817335 (1974-06-01), Chelminski
patent: 3881557 (1975-05-01), Gendron et al.
patent: 3958647 (1976-05-01), Chelminski
Gendron George J.
Holland Henry A. Nelson
Raymond International Inc.
Staab Lawrence J.
LandOfFree
Underwater hammer with circumferential flow seal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Underwater hammer with circumferential flow seal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Underwater hammer with circumferential flow seal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-274015