US3576152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake operating mechanism
Assignee: DBA SA
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Filing: 1969-05-08
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Granted: 1971-04-27
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Expires: 1989-05-08
Abstract
Abstract A brake operating mechanism includes a housing defining a chamber therewithin and a first tubular member slidably mounted in the chamber and extending therefrom. The outer surface of a second tubular member is threadedly engaged with the first tubular member, and the inner diameter of the second tubular member has a polygonal cross section, which slidably receives a shaft which has a corresponding polygonal cross section. A brake actuating rod is urged into engagement with the end of the second tubular member. A spring yieldably urges the actuating rod and the tubular members in a brake applying direction, but is normally opposed by fluid pressure in the chamber. The brake may be released after application by the resilient means by turning the shaft to move the second tubular member away from the actuating rod.
Inventors
- 👤 Gerard Chevreux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:17
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/28; B; B60; B60T; B60T17/00; B60T17/08; B60T17/083; B60T17/085; B60T17/086; F16D2121/00; F16D2121/02; F16D2121/12; F16D2123/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
218 words
In a brake operating mechanism: a housing defining a chamber therewithin; a first tubular member slidably mounted in said housing and extending from one end of the latter; a piston slidable in said chamber engaging said tubular member; resilient means yieldably urging said piston toward said one end of the chamber; means communicating pressurized fluid into said chamber for driving said piston away from said one end of the chamber against the bias of said resilient means; a control rod slidably mounted in said tubular member and projecting from said one end of the housing; a second tubular member received within said first tubular member, the outer circumferential surface of said second tubular member threadedly engaging the inner circumferential surface of said first tubular member the inner circumferential surface of said second tubular member having a polygonal cross section; one end of said second tubular member engaging the end of the control rod to prevent movement of the latter toward the other end of the housing; another member having a polygonal cross section slidably receiver within said second tubular member; and said another member being rotatable to thereby rotate said second tubular member to move the latter toward the other end of the bore to permit movement of the control rod toward said other end of the bore.
Claim 2
Dependent Claim
218 words
In a brake operating mechanism: a housing defining a chamber therewithin; a first tubular member slidably mounted in said housing and extending from one end of the latter; a piston slidable in said chamber engaging said tubular member; resilient means yieldably urging said piston toward said one end of the chamber; means communicating pressurized fluid into said chamber for driving said piston away from said one end of the chamber against the bias of said resilient means; a control rod slidably mounted in said tubular member and projecting from said one end of the housing; a second tubular member received within said first tubular member, the outer circumferential surface of said second tubular member threadedly engaging the inner circumferential surface of said first tubular member the inner circumferential surface of said second tubular member having a polygonal cross section; one end of said second tubular member engaging the end of the control rod to prevent movement of the latter toward the other end of the housing; another member having a polygonal cross section slidably receiver within said second tubular member; and said another member being rotatable to thereby rotate said second tubular member to move the latter toward the other end of the bore to permit movement of the control rod toward said other end of the bore.
Claim 3
Dependent Claim
34 words
The invention of claim 1: said another member being a shaft having a portion extending from the other end of the housing to permit rotation of the latter from the exterior of the housing.
Claim 4
Dependent Claim
36 words
The invention of claim 1: a rotatable input member extending from said housing; and a gearing mechanism operably connecting the input member with said another member to rotate the latter upon rotation of the input member.
Claim 5
Dependent Claim
16 words
The invention of claim 3: said input member extending from said other end of the housing.
Claim 6
Dependent Claim
74 words
The invention of claim 1: a push rod extending into said tubular members; a pressure responsive movable wall for actuating said push rod; said another member being a sleeve engaging said second tubular member; said push rod being coaxial with said sleeve; a rotatable input member extending from said housing; and a gearing mechanism operably connecting said input member with said sleeve to permit rotation of the latter upon rotation of the input member.
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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |