Patent US3640416A successfully refreshed from Google Patents.
US3640416A
Expired / Lapsed
US
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Reverse angle thread system for containers
Assignee: Individual
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Filing: 1970-10-16
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Granted: 1972-02-08
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Expires: 1990-10-16
Abstract
Abstract In a container for holding fluids having a neck portion through which the fluid is poured and a head portion, or cap which threadedly engages the neck portion, a thread system wherein the neck, or male threads are made of a relatively deformable plastic material, such male threads having a reverse downward angle and having parallel upper and lower edges, and the cap, or female member, being made of a harder less deformable material and having interengaging upward angled threads, the upward angle of the female member being greater than that of the male member such that upon threaded engagement the male threads hook within the female threads and are stressed into a strengthened engagement.
Inventors
- 👤 John J Temple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:52
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/02; B65D1/0223; B65D1/023; B65D1/0246; B65D41/00; B65D41/02; B65D41/04; B65D41/0471
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
125 words
A container assembly comprising: a. a cylindrical neck member having an opening therethrough and threads around the outer surface thereof, the threads having parallel upper and lower surfaces inclined downward at a first angle from the plane normal to the axis of said neck member; a closure cap member in complementary threaded engagement with said neck member, having threads around the inner surface thereof, such threads having parallel upper and lower surfaces inclined upward at a second angle greater than said first angle; and c. said two elements when threadedly interengaged hooking each other such that when pressure within said container assembly is exerted against said cap member, said neck threads transmit a reaction force against said cap threads having axial and radially inward components.
Claim 2
Dependent Claim
125 words
A container assembly comprising: a. a cylindrical neck member having an opening therethrough and threads around the outer surface thereof, the threads having parallel upper and lower surfaces inclined downward at a first angle from the plane normal to the axis of said neck member; a closure cap member in complementary threaded engagement with said neck member, having threads around the inner surface thereof, such threads having parallel upper and lower surfaces inclined upward at a second angle greater than said first angle; and c. said two elements when threadedly interengaged hooking each other such that when pressure within said container assembly is exerted against said cap member, said neck threads transmit a reaction force against said cap threads having axial and radially inward components.
Claim 3
Dependent Claim
32 words
The container assembly as described in claim 1 wherein said neck member is comprised of a relatively soft plastic material, and said closure member is comprised of a relatively hard plastic material.
Claim 4
Dependent Claim
26 words
The assembly as described in claim 2 wherein the angular difference between said first and second angles is in the range of 1* to 5* .
Claim 5
Dependent Claim
20 words
The assembly as described in claim 3 wherein said second angle is 30* and said first angle is 29* .
Claim 6
Dependent Claim
20 words
The assembly is described in claim 3 wherein said second angle is in the range of 25* to 45* .
Claim 7
Dependent Claim
84 words
A container assembly comprising: a. a first cylindrical member having Male threads; b. a second cylindrical member having female threads; c. said members being in complementary threaded engagement and having a common axis, and said threads being at reverse angles from the plane normal to said axis such that an axial force exerted upon one of said members is opposed by a reaction force transmitted through the threads of the other, said reaction force having an opposing axial component and a radially inward component.
Claim 8
Dependent Claim
84 words
A container assembly comprising: a. a first cylindrical member having Male threads; b. a second cylindrical member having female threads; c. said members being in complementary threaded engagement and having a common axis, and said threads being at reverse angles from the plane normal to said axis such that an axial force exerted upon one of said members is opposed by a reaction force transmitted through the threads of the other, said reaction force having an opposing axial component and a radially inward component.
Claim 9
Dependent Claim
33 words
The assembly as described in claim 6 wherein said male threads are inclined at a first angle from said plane, and said female threads are inclined at a second angle from said plane.
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |