ring gate

ring gate

[′riŋ ‚gāt]
(civil engineering)
A type of gate used to regulate and control the discharge of a morning-glory spillway; like a drum gate, it offers a minimum of interference to the passage of ice or drift over the gate and requires no external power for operation.
(engineering)
An annular opening through which plastics enter the cavity of an injection or transfer mold.
References in periodicals archive ?
Based on the evaluated results the ring gate and diaphragm gate promise the best possible solutions and are considered for further investigations.
Compared to the ring gate, the diaphragm gate provides the advantage that the gate system is cut off automatically during the mold opening.
Grein, "Ring gate as turbine emergency shut-down device," Hydraulic Engineering, vol.
Kostornoy, "Computation of hydrodynamic forces at the ring gate of a hydraulic turbine," Tyazheloe Mashinostroenie, vol.
Here's another example: We had a trailing ring gate on an ABS part with only a 0.006-in.
To cope with all these, the weigher has a standard configuration, with ring gate, semiflat radial feeder troughs, 5 litre size antispillage pool and weigh hoppers and a beak-type timing hopper at the outlet.
The weigher has a standard configuration, with ring gate, semi-flat radial feeder troughs, five-liter size anti-spillage pool and weigh hoppers, and a beak-type timing hopper at the outlet.
The selected commercial test casting had a ring gate at one end and vented overflows at the other end, with a length of 17 in.
The weigher model at Casseneuil is fitted with a ring gate in the discharge chute to ensure that all product discharges reach the bagmaker in short, concentrated doses.
It features standard and wear-resistant tips in three styles, including a sprue gate design that provides low flow resistance, a ring gate style with a sealed tip for efficient shutoff at the part surface, and a point gate design suitable for high-viscosity resins.
Schacht investigated the influence of divergent and convergent flow on layer buildup in molded samples of half discs with a center gate and of half discs with a half ring gate [2].
Ring gates are often used where sprue vestiges and/or knit lines may not be allowed on the molded article (figure 10).