US3929152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire hydrant cap and actuating tool therefor
Assignee: HYDRA-SHIELD MANUFACTURING Inc 2701 WEST AIRPORT FREEWAY STE 110 IRVING TX 75062 A CORP OF TX
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Filing: 1974-07-10
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Granted: 1975-12-30
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Expires: 1994-07-10
Abstract
Abstract A fire hydrant cap which cannot readily be unthreaded from a fire hydrant by conventional tools. A body having first and second ends with the first end having internal threads for attachment to a fire hydrant while the second end extends from the first end and includes a curved convex shape which cannot be readily gripped by a conventional tool. A plurality of tool engaging surfaces spaced from each other are positioned on the second end with each surface including a shoulder facing in a counterclockwise direction to provide engagement with a special tool for tightening the cap onto the hydrant. Each engaging surface includes a recess extending from each shoulder in a counterclockwise direction with a curved surface extending from a shoulder and progressively increasing in distance from the axis of the body for coacting with a special tool for unthreading the cap from a hydrant. Preferably, three engaging surfaces are provided spaced equal distance around the periphery of the second end. A special actuating tool having a generally circular body and including an internal opening and a handle connected to the tool is provided for rotating the tool. The tool includes a plurality of actuating surfaces positioned about the internal opening for coacting with the engaging surfaces on the second end of the cap for tightening and untightening the cap.
Inventors
- 👤 Gerald A Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:28
CPC Classifications
E; E03; E03B; E03B9/00; E03B9/02; F; F16; F16B; F16B23/00; F16B23/0076; Y; Y10; Y10S; Y10S411/00; Y10S411/919; Y10T; Y10T137/00; Y10T137/5327; Y10T137/5456; Y10T137/5468; Y10T137/9247
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
161 words
A fire hydrant cap comprising, a body having first and second ends, said first end having internal threads extending inwardly into the body for attachment to a fire hydrant, said second end extending from the first end and having a curved convex shape, a plurality of tool engaging surfaces spaced from each other and positioned on the second end, each engaging surface including a shoulder facing oppositely to the direction in which the cap is threaded onto a hydrant for providing shoulders for engaging a tool for connecting the cap to a hydrant, each engaging surface including a recess extending from said shoulder in a direction opposite to the direction in which the cap is threaded onto the hydrant, said recess including a curved surface progressively increasing in distance from the axis of the body and includes a sidewall which extends parallel to the longitudinal axis of said cap for coacting with a tool for unthreading the cap from a hydrant.
Claim 2
Dependent Claim
161 words
A fire hydrant cap comprising, a body having first and second ends, said first end having internal threads extending inwardly into the body for attachment to a fire hydrant, said second end extending from the first end and having a curved convex shape, a plurality of tool engaging surfaces spaced from each other and positioned on the second end, each engaging surface including a shoulder facing oppositely to the direction in which the cap is threaded onto a hydrant for providing shoulders for engaging a tool for connecting the cap to a hydrant, each engaging surface including a recess extending from said shoulder in a direction opposite to the direction in which the cap is threaded onto the hydrant, said recess including a curved surface progressively increasing in distance from the axis of the body and includes a sidewall which extends parallel to the longitudinal axis of said cap for coacting with a tool for unthreading the cap from a hydrant.
Claim 3
Dependent Claim
17 words
The apparatus of claim 1 wherein there are three engaging surfaces spaced equidistance around said second end.
Claim 4
Dependent Claim
21 words
The apparatus of claim 1 wherein the curved convex shape of the second end is generally a sector of a sphere.
Claim 5
Dependent Claim
88 words
The apparatus of claim 1 including, an arcuately shaped tool having a plurality of actuating surfaces positioned interiorly of the tool for coacting with the engaging surfaces on the second end of the cap for tightening and untightening said cap from the hydrant, each actuating surface including a shoulder positioned and shaped to coact with a shoulder on the cap engaging surfaces and including a curved portion positioned and shaped to coact with a curved surface on the cap engaging surfaces on the second end of the cap.
Claim 6
Dependent Claim
168 words
A fire hydrant cap comprising, a body having first and second ends, said first end having internal threads extending inwardly into the body for attachment to a fire hydrant, said second end extending from a generally circular intersection with the first end and having a curved convex shape generally in the form of a sector of a sphere, a plurality of tool engaging surfaces spaced from each other and positioned on the second end, each engaging surface including a shoulder facing in a counterclockwise direction in the second end for providing shoulders for engaging a tool for tightening the cap on the hydrant, each engaging surface including a recess extending from each shoulder in a counterclockwise direction in the second end, said recess including a curved surface extending from a shoulder and progressively increasing in distance from the axis of the body and includes a sidewall which extends parallel to the longitudinal axis of said cap for coacting with a tool for unthreading the cap from a hydrant.
Claim 7
Dependent Claim
168 words
A fire hydrant cap comprising, a body having first and second ends, said first end having internal threads extending inwardly into the body for attachment to a fire hydrant, said second end extending from a generally circular intersection with the first end and having a curved convex shape generally in the form of a sector of a sphere, a plurality of tool engaging surfaces spaced from each other and positioned on the second end, each engaging surface including a shoulder facing in a counterclockwise direction in the second end for providing shoulders for engaging a tool for tightening the cap on the hydrant, each engaging surface including a recess extending from each shoulder in a counterclockwise direction in the second end, said recess including a curved surface extending from a shoulder and progressively increasing in distance from the axis of the body and includes a sidewall which extends parallel to the longitudinal axis of said cap for coacting with a tool for unthreading the cap from a hydrant.
Claim 8
Dependent Claim
17 words
The apparatus of claim 5 wherein there are three engaging surfaces spaced equidistance around said second end.
Claim 9
Dependent Claim
105 words
The apparatus of claim 5 including, a generally circular tool having an internal opening and a handle connected to the tool for rotating the tool, said tool including a plurality of actuating surfaces positioned about the internal opening for coacting with the engaging surfaces on the second end of the cap for tightening and untightening said cap from a hydrant, each actuating surface including a shoulder positioned and shaped to coact with a shoulder on the cap engaging surfaces and including a curved portion positioned and shaped to coact with a curved surface on the cap engaging surface on the second end of the cap.
Claim 10
Dependent Claim
17 words
The apparatus of claim 7 wherein the tool includes a pentagonal recess for actuating a fire hydrant.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |