US3762645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall breaching attachment for fire hose
Assignee: Individual
•
Filing: 1972-01-05
•
Granted: 1973-10-02
•
Expires: 1992-01-05
Abstract
Abstract A fire hose nozzle is sharpened to a bayonet-like point at its forward end, thereby enabling the operator to gouge a pit or open a crack in a wall to be breached. A high pressure stream of water issuing from the nozzle and striking the pit or crack is sometimes effective through pressure alone to enlarge the surface opening and ultimately breach the wall. By injecting a charge of abrasive material into the high pressure water stream, the area of weakness formed by the pit or crack quickly enlarges and soon causes the wall to rupture and give way since the erosion of the pit or crack is greatly accelerated by the abrasive material entrained in the high velocity water stream.
Inventors
- 👤 L Gendron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:18
CPC Classifications
A; A62; A62C; A62C31/00; A62C31/02; A62C31/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
A wall breaching attachment for a fire hose comprising: a. an elongated nozzle extending from an after inlet end to a forward outlet end to direct the flow of high pressure water in a predetermined path; b. a fire hose connector mounted on said after inlet end of said nozzle; c. an opening in the wall of said nozzle; d. an elongated conductor mounted on said nozzle, one end of said conductor being connected to said opening in said nozzle wall; e. means for introducing abrasive material into the other end of said conductor, the abrasive material being capable of being withdrawn from said conductor and injected through said opening into said flow of high pressure water to increase the abrading capability thereof; and; f. movable barrier means for controlling the movement of abrasive material located within said conductor, said barrier means including a slide gate translatably mounted on said conductor for selectively covering and uncovering said opening.
Claim 2
Dependent Claim
158 words
A wall breaching attachment for a fire hose comprising: a. an elongated nozzle extending from an after inlet end to a forward outlet end to direct the flow of high pressure water in a predetermined path; b. a fire hose connector mounted on said after inlet end of said nozzle; c. an opening in the wall of said nozzle; d. an elongated conductor mounted on said nozzle, one end of said conductor being connected to said opening in said nozzle wall; e. means for introducing abrasive material into the other end of said conductor, the abrasive material being capable of being withdrawn from said conductor and injected through said opening into said flow of high pressure water to increase the abrading capability thereof; and; f. movable barrier means for controlling the movement of abrasive material located within said conductor, said barrier means including a slide gate translatably mounted on said conductor for selectively covering and uncovering said opening.
Claim 3
Dependent Claim
27 words
A wall breaching attachment for a fire hose as in claim 1 further including a hinged gate selectively covering and uncovering said other end of said conductor.
Claim 4
Dependent Claim
199 words
A wall breaching attachment for a fire hose comprising: a. an elongated nozzle extending from an after inlet end to a forward outlet end to direct the flow of high pressure water in a predetermined path; b. a fire hose connector mounted on said after end of said nozzle; c. an opening in the wall of said nozzle; d. an elongated conductor mounted on said nozzle, one end of said conductor being connected to said opening in said nozzle wall; e. means for introducing abrasive material into the other end of said conductor, the abrasive material being capable of being withdrawn from said conductor and injected through said opening into said flow of high pressure water to increase the abrading capability thereof; and, f. barrier means for controlling the movement of abrasive material located within said conductor, said conductor including limit stop means for abutting the leading margin of an elongated canister loaded with abrasive material, said limit stop means being effective to preclude the movement of said canister beyond said limit stop means and being ineffective to prevent the discharge of the abrasive material from said canister into said conductor and toward said opening in said nozzle walls.
Claim 5
Dependent Claim
199 words
A wall breaching attachment for a fire hose comprising: a. an elongated nozzle extending from an after inlet end to a forward outlet end to direct the flow of high pressure water in a predetermined path; b. a fire hose connector mounted on said after end of said nozzle; c. an opening in the wall of said nozzle; d. an elongated conductor mounted on said nozzle, one end of said conductor being connected to said opening in said nozzle wall; e. means for introducing abrasive material into the other end of said conductor, the abrasive material being capable of being withdrawn from said conductor and injected through said opening into said flow of high pressure water to increase the abrading capability thereof; and, f. barrier means for controlling the movement of abrasive material located within said conductor, said conductor including limit stop means for abutting the leading margin of an elongated canister loaded with abrasive material, said limit stop means being effective to preclude the movement of said canister beyond said limit stop means and being ineffective to prevent the discharge of the abrasive material from said canister into said conductor and toward said opening in said nozzle walls.
Claim 6
Dependent Claim
62 words
A wall breaching attachment for a fire hose as in claim 3 wherein said elongated canister is collapsible, and the leading end of said canister is sealed by a closure capable of being ruptured as the after end of said canister is urged forwardly against the load of abrasive material and the forward urgency of said load is transmitted to said closure.
References Cited (Backward Citations)
US1106679A
Cited
US1610714A
Cited
US2040715A
Cited
US2176577A
Cited
US2224010A
Cited
US2348402A
Cited
US2489097A
Cited
US2813753A
Cited
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 |