Sprinkler status indicator
First Claim
Patent Images
1. An apparatus comprising:
- a valve that has a open and a closed state;
a heat responsive element which in the absence of a predetermined amount of applied heat, retains the valve in the closed state; and
a device, coupled to the elements which emits a wireless signal indicative of the valve'"'"'s changed state.
1 Assignment
0 Petitions
Accused Products
Abstract
A fire suppression valve includes an RF transmitter which transmits an indication that a closed valve has opened. The transmitter can be implemented as a passive wireless identifier tag energized by a source of wireless signals.
17 Citations
23 Claims
-
1. An apparatus comprising:
-
a valve that has a open and a closed state;
a heat responsive element which in the absence of a predetermined amount of applied heat, retains the valve in the closed state; and
a device, coupled to the elements which emits a wireless signal indicative of the valve'"'"'s changed state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A system comprising:
-
a plurality of fire suppression valves, each of the valves includes a wireless state indicating emitter; and
at least one wireless receiver. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
- 18. A system as in clam 17 which includes a control element coupled to the receiver and to the at least one transmitter.
-
20. A sprinkler head comprising:
-
a housing with an internal flow channel;
a multi-position valve cap for closing the channel;
a radio frequency emitter, the emitter is coupled to the cap when the cap is in a first position and not coupled thereto when the cap is in a second position. - View Dependent Claims (23)
-
- 21. A sprinkler head as in clam 20 where the cap is retained in the first position by a heat sensitive member.
Specification