US3762906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurized fluid ram acceleration system
Assignee: Corning Glass Works
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Filing: 1972-08-04
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Granted: 1973-10-02
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Expires: 1992-08-04
Abstract
Abstract A system for rapid acceleration of a pressurized fluid actuated ram from a condition of rest to a condition of linear motion. A pressurized fluid intensifier is used in the system to, at times enable rapidly overcoming the static friction and inertia of a ram and its associated apparatus and rapidly accelerate the ram and apparatus to a desired velocity. The system is, for example, especially adaptable to operations, such as glass pressing operations, in which a ram is used to actuate a relatively massive pressing plunger to press form a relatively large article in or on a cooperative mold member.
Inventors
- 👤 F Dahlman
- 👤 R Mras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:46
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; B; B30; B30B; B30B15/00; B30B15/16; C; C03; C03B; C03B11/00; C03B11/16; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/30525; F15B2211/31; F15B2211/3105; F15B2211/3111; F15B2211/32; F15B2211/329; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/415; F15B2211/41572; F15B2211/42; F15B2211/428; F15B2211/455; F15B2211/60; F15B2211/635; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/775; F15B2211/80; F15B2211/86; F15B2211/8609
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
80 words
A control system in accordance with claim 1 and in which said pressurized fluid intensifier comprises; A. a pressurized fluid cylinder embodying a bore including coaxial and coextensive large and small bore portions connecting with said input and output ports of the intensifier, respectively; and, B. a piston including coaxial large and small piston portions disposed in said large and small bore portions respectively of said cylinder in a relatively snug but reciprocatively slidable relationship with each respective bore portion.
Claim 2
Dependent Claim
29 words
A control system in accordance with claim 1 and in which said ram is vertically disposed and said condition of rest is a lowered press-forming condition of the ram.
Claim 3
Dependent Claim
21 words
A control system in accordance with claim 1 and in which said ram actuates a forming member for press-forming glass articles.
Claim 4
Dependent Claim
29 words
A control system in accordance with claim 2 and in which said ram is vertically disposed and said condition of rest is a lowered press-forming condition of the ram.
Claim 5
Dependent Claim
21 words
A control system in accordance with claim 2 and in which said ram actuates a forming member for press-forming glass articles.
Claim 6
Dependent Claim
319 words
In combination with a pressurized fluid actuated ram including the usual pressurized fluid cylinder and an embodied piston and associated piston rod, a control system for rapid acceleration of the ram from a condition of rest to a condition of linear motion, such system comprising; I. a first pressurized fluid flow control valve having a first non-flow position and actuable to second and third positions for selectively controlling fluid flow therethrough; II. a second pressurized fluid flow control valve having a first non-flow position and actuable to a second position for fluid flow therethrough; III. a conventional single-direction fluid flow check valve having its inlet port connected with a first source of pressurized fluid; IV. a controlled valve normally operating as a fluid flow check valve for fluid flow therethrough in only a single direction and actuable to a fully open condition for unchecked pressurized fluid flow therethrough in a direction opposite to said single direction; V. a pressurized fluid intensifier including a low pressure input port and a high pressure output port with such output port connected with the outlet port of said conventional check valve; VI. means including said first control valve, when actuated to its said second position, and said controlled check valve, when actuated, for connecting first and second end of said pressurized fluid cylinder with a fluid sink and a second source of pressurized fluid, respectively; VII. means including said first control valve, when actuated to iTs said third position, for connecting said input port of said pressurized fluid intensifier with said first source of pressurized fluid and said second end of said pressurized fluid cylinder with a fluid sink, respectively; and VIII. means including said second control valve, when actuated to its said second position, for connecting said output port of said pressurized fluid intensifier with said first end of said pressurized fluid cylinder and said outlet port of said controlled check valve.
Claim 7
Dependent Claim
47 words
A control system in accordance with claim 7 and in which said ram is vertically disposed to actuate a forming member in a downward direction for press-forming of glass articles and said condition of rest is at the end of the downward press-forming stroke of the ram.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |