Patent US3976034A successfully refreshed from Google Patents.
US3602255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power steering valve system
Assignee: Individual
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Filing: 1970-01-30
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Granted: 1971-08-31
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Expires: 1990-01-30
Abstract
Abstract A minimum slack connection between the steering shaft, power steering valve components, and steering gear worm, in which limited universal motion is permitted to accommodate manufacturing tolerances without interference with precise steering control; and incorporating provision against application of axial pressures to the steering components in response to power steering hydraulic pressures in the system.
Inventors
- 👤 Arthur E Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:19
CPC Classifications
B; B62; B62D; B62D5/00; B62D5/06; B62D5/08; B62D5/083; Y; Y10; Y10T; Y10T137/00; Y10T137/8376; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638; Y10T137/86646; Y10T137/86662
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
76 words
In combination in an integral rotary-valve power steering gear having a gear reduction member drivingly connected to a power steering valve sleeve member and wherein varying hydraulic pressures are applied to the gear reduction member in the area adjacent said connection, the improvement comprising a sleeve surrounding both said gear reduction member and said valve sleeve member adjacent their point of connection and resiliently sealed to both members by annular resilient sealing means permitting slight misalignment.
Claim 2
Dependent Claim
76 words
In combination in an integral rotary-valve power steering gear having a gear reduction member drivingly connected to a power steering valve sleeve member and wherein varying hydraulic pressures are applied to the gear reduction member in the area adjacent said connection, the improvement comprising a sleeve surrounding both said gear reduction member and said valve sleeve member adjacent their point of connection and resiliently sealed to both members by annular resilient sealing means permitting slight misalignment.
Claim 3
Dependent Claim
18 words
The structure set forth in claim 1 wherein said resilient seal means comprise annular rings of resilient material.
Claim 4
Dependent Claim
32 words
The structure set forth in claim 1 wherein restraining means are provided preventing axial movement of said sleeve with respect to said gear reduction member in a direction toward said valve sleeve.
Claim 5
Dependent Claim
17 words
The structure set forth in claim 1 wherein said sleeve is slidable relAtive to said valve sleeve.
Claim 6
Dependent Claim
16 words
The structure set forth in claim 1 wherein said gear reduction member comprises a worm gear.
Claim 7
Dependent Claim
60 words
The structure set forth in claim 1 wherein said connection comprises an interface connection comprising a substantially parallel-sided radially disposed slot in one of said members and opened axially toward the other of said members, and means in said slot mechanically connected with the other member including a spring resiliently filling the space between said mechanical means and said slot.
Claim 8
Dependent Claim
43 words
The structure set forth in claim 6 wherein said mechanical means comprises a pin carried by said other member and said spring comprises a member biasing said pin against one side of said slot by reaction against the other side of said slot.
Claim 9
Dependent Claim
25 words
The structure set forth in claim 6 wherein said mechanical means comprises a slot in the said other member and a block of solid material.
Claim 10
Dependent Claim
30 words
The subject matter of claim 3 wherein the diameter of said gear reduction member at its sealing to said sleeve is smaller than the diameter of said valve sleeve member.
Claim 11
Dependent Claim
63 words
A resilient universal connection between a pair axially facing worm and valve sleeve members of a power steering gear comprising a slot in one of said members, a pin on the other of said members extending into said slot, and spring means positioned between said pin and one side of said slot constantly biasing said pin against the other side of said slot.
Claim 12
Dependent Claim
63 words
A resilient universal connection between a pair axially facing worm and valve sleeve members of a power steering gear comprising a slot in one of said members, a pin on the other of said members extending into said slot, and spring means positioned between said pin and one side of said slot constantly biasing said pin against the other side of said slot.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |