US3595047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming o-ring grooves
Assignee: Caterpillar Inc
•
Filing: 1969-02-19
•
Granted: 1971-07-27
•
Expires: 1989-02-19
Abstract
Abstract A method of forming O-ring grooves in a tube; inserting an end of the tube within a die and pulling or pushing a plunger against a cylindrical resilient member, forcing the resilient member to exert a pressure against the walls of the tube, thereby forcing the tube against the die surfaces.
Inventors
- 👤 William K Fanning
- 👤 Vincent R Hodel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:56
CPC Classifications
B; B21; B21D; B21D15/00; B21D15/04; B21D15/10; B21D15/105; B21D22/00; B21D22/10; B21D22/105; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
A method of simultaneously grooving and flaring out the end of a tube to a diameter which is greater than its diameter prior to forming which is accomplished from within comprising the steps of placing the tube within a die such that the tube end is radially adjacent one of a plurality of spaced circumferential grooves in said die, placing a resilient member within the tube and confining the resilient member within the tube and exerting a force on the resilient member in a direction coincident with the tube axis, thereby causing said resilient member to expand radially and deform the tube into each of said grooves whereby forming of O-ring grooves in the tube wall and flaring of the tube end to a diameter which is greater than its diameter prior to forming occurs simultaneously.
Claim 2
Independent Claim
136 words
A method of simultaneously grooving and flaring out the end of a tube to a diameter which is greater than its diameter prior to forming which is accomplished from within comprising the steps of placing the tube within a die such that the tube end is radially adjacent one of a plurality of spaced circumferential grooves in said die, placing a resilient member within the tube and confining the resilient member within the tube and exerting a force on the resilient member in a direction coincident with the tube axis, thereby causing said resilient member to expand radially and deform the tube into each of said grooves whereby forming of O-ring grooves in the tube wall and flaring of the tube end to a diameter which is greater than its diameter prior to forming occurs simultaneously.
Claim 3
Dependent Claim
31 words
The method of claim 1 including the step of abutting one end of the tube against a stop adjacent one end of the die when placing the tube within the die.
Claim 4
Dependent Claim
35 words
The method of claim 2 including the step of positioning a plunger head in the tube and adjacent the resilient member and moving the plunger head against the resilient member to exert the force thereon.
Claim 5
Dependent Claim
51 words
The method of claim 2 including the steps of positioning a plunger so as to extend through an aperture in the resilient member, thereby positioning a plunger head against the resilient material, and drawing upon the plunger so that its head moves against the resilient member to exert the force thereon.
Claim 6
Dependent Claim
79 words
The method of claim 1 including the steps of abutting the tube and the resilient member against a collar situated at one end of the die, and drawing a plunger through the resilient material and the collar so as to accomplish the step of exerting a force on the resilient member by confining the resilient member between a head on the plunger, the collar, and the die cavity and decreasing the distance between the plunger head and the collar.
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |