Claims
- 1. A pressure source comprising: pressurizing means comprising an enclosure which bounds a chamber, said enclosure comprising a first and a second portion, at least one of which is movable relative to the other as a consequence of a force applied to one of them so as to reduce the volume of the chamber and thereby to place under pressure fluid which is contained therein; a conduit leading from said chamber through which a stream of said fluid under pressure can flow for use in doing work; weight means; force transmission means so disposed and arranged as to apply force from elevated weight means to one of said portions for reducing the volume as a consequence of the descent in elevation of said weight means, whereby to produce said stream under pressure; and release means comprising a latch preventing the descent of the weight means until released as a consequence of the presence of a predetermined weight, said latch being engageable to said force transmission means for that purpose, and being releasable by fluid pressure derived from a supply of liquid constituting the weight means and having at least the said predetermined weight.
- 2. A pressure source according to claim 1 in which the descent of the weight means occurs without substantial impediment other than the pressurizing means.
Parent Case Info
This is a division of application Ser. No. 659,979 and Ser. No. 432,667, filed Feb. 2, 1976, now U.S. Pat. No. 4,074,526, and Jan. 17, 1974, now U.S. Pat. No. 3,961,480, respectively.
US Referenced Citations (5)
Related Publications (1)
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Date |
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432667 |
Jan 1974 |
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Divisions (1)
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Number |
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659979 |
Feb 1976 |
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