US3696996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water therapy safety controls
Assignee: Individual
•
Filing: 1971-01-27
•
Granted: 1972-10-10
•
Expires: 1991-01-27
Abstract
Abstract A first form of water therapy safety control to discontinue the flow of liquid to a therapy device responsive to increase in temperature of the liquid over a predetermined limit has a receptacle with a strut at a mid-depth location. A thermally actuated bellows operator is mounted on the strut and carries a rod with a closure which is placed in shut-off position by expansion of the bellows. The receptacle has a member adapted to open upon increase of pressure therewithin; In a second form of the invention, a receptacle has liquid inlet and outlet openings, the outlet being provided with a thermal operator which closes the outlet in response to increased temperature of the liquid past a predetermined limit. A normally closed discharge opening has a spring biased closure which opens responsive to pressurization of the receptacle upon closing of the outlet.
Inventors
- 👤 Harold B Lloyd
- 👤 Sterling E Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:28
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/123; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/7722; Y10T137/7734; Y10T137/7737
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
111 words
A safety device for liquid therapy appliances employing liquid from a supply source, comprising: a receptacle having liquid supply means extending thereinto from said source; said receptacle having an outlet; a thermally responsive closure for said outlet; liquid relief means operated by pressure buildup within the receptacle responsive to closing of the outlet; said receptacle having a pair of closure members releasably secured thereto; one of said closure members having an outlet opening and an inlet opening therein; a housing about the outlet opening within the receptacle; and a rod within the housing having a valve body thereon and having an expandable member to seat the valve body against the outlet.
Claim 2
Dependent Claim
111 words
A safety device for liquid therapy appliances employing liquid from a supply source, comprising: a receptacle having liquid supply means extending thereinto from said source; said receptacle having an outlet; a thermally responsive closure for said outlet; liquid relief means operated by pressure buildup within the receptacle responsive to closing of the outlet; said receptacle having a pair of closure members releasably secured thereto; one of said closure members having an outlet opening and an inlet opening therein; a housing about the outlet opening within the receptacle; and a rod within the housing having a valve body thereon and having an expandable member to seat the valve body against the outlet.
Claim 3
Dependent Claim
91 words
The invention of claim 1, wherein: the other closure member has a compound opening including a bore and an enlarged outer section; said closure having a series of relief openings therein about the bore communicating with the enlarged outer section; a rod slidably engaged in said bore; a plug carried by said rod; and the plug being spring biased to a position wherein the plug is sealingly seated in the enlarged outer section of the compound opening and being unseated therefrom by pressure buildup within the receptacle through said relief opening.
Claim 4
Dependent Claim
152 words
A safety device for liquid therapy appliances empLoying liquid from a supply source, comprising: a hollow receptacle including a top wall, a side wall and an open bottom; liquid supply means connected with said source and extending through one of said walls; one of the walls having an outlet spout thereon; conduit means extending from the spout to said appliance; a strut mounted in fixed position within the receptacle at a location spaced from the spout; a thermally responsive power member mounted on the strut; a rod extending from the power member into said spout; a closure carried on the rod and normally spaced from the wall having the spout when liquid passing through the device is in a permissible heat range, the rod being extended into the spout and carrying the closure to sealing engagement on the wall about the spout; and a base member frictionally engaged about the open bottom.
Claim 5
Dependent Claim
152 words
A safety device for liquid therapy appliances empLoying liquid from a supply source, comprising: a hollow receptacle including a top wall, a side wall and an open bottom; liquid supply means connected with said source and extending through one of said walls; one of the walls having an outlet spout thereon; conduit means extending from the spout to said appliance; a strut mounted in fixed position within the receptacle at a location spaced from the spout; a thermally responsive power member mounted on the strut; a rod extending from the power member into said spout; a closure carried on the rod and normally spaced from the wall having the spout when liquid passing through the device is in a permissible heat range, the rod being extended into the spout and carrying the closure to sealing engagement on the wall about the spout; and a base member frictionally engaged about the open bottom.
Claim 6
Dependent Claim
18 words
The invention of claim 3, wherein: the outlet spout and the supply means extend through the top wall.
Claim 7
Dependent Claim
14 words
The invention of claim 3, wherein: the closure is adjustably mounted on the rod.
Claim 8
Dependent Claim
20 words
The invention of claim 3, wherein: the base member is fitted within the open bottom and includes a connection bead.
Claim 9
Dependent Claim
29 words
The invention of claim 3, wherein: the base member has a flange surrounding the open bottom of the receptacle; and the receptacle has a connection bead engaging the flange.
References Cited (Backward Citations)
US2272381A
Cited
US2292673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |