Patent US3800909A successfully refreshed from Google Patents.
US3800909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise-suppressing control lever for vibration prone mechanisms
Assignee: Caterpillar Inc
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Filing: 1972-07-17
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Granted: 1974-04-02
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Expires: 1992-07-17
Abstract
Abstract A manually shiftable lever having a free end for manipulation by an operator and an opposite end extending through an opening in a housing where noise may originate includes a sleeve mounted coaxially on the lever by axially spaced resilient rings, and a resilient cover connecting the sleeve to a collar mounted on the housing so that the lever is effectively enclosed by vibration dampening means to minimize the transmission of noise through the lever itself as well as suppressing the passage of airborne noise through the lever opening in the housing.
Inventors
- 👤 W Duncanson
- 👤 J Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:26
CPC Classifications
B; B60; B60K; B60K20/00; B60K20/02; F; F16; F16F; F16F15/00; F16F15/02; F16F15/04; F16F15/08; F16H; F16H59/00; F16H59/02; F16H59/0208; G; G05; G05G; G05G25/00; G05G25/02; G05G25/04; F16H61/00; F16H61/24; F16H2061/246; F16H59/0213; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20134; Y10T74/20576; Y10T74/20582; Y10T74/20612; Y10T74/20732
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
155 words
A noise-suppressing lever assembly for manually controlling a vibration prone mechanism, said lever assembly having an operator manipulated end and an opposite end extending through an opening in a housing containing said mechanism comprising: a pivotable control lever having a first end extending into said housing through said opening and being coupled to said mechanism therein, a rigid knob grippable by an operator and coupled to the second end of said lever through vibration dampening means, an elongated sleeve encircling said control lever in radially spaced relation thereto and enclosing substantially the entire length of said lever between said housing and said knob, annular resilient mounting means disposed coaxially between said elongated sleeve and said control lever for supporting said sleeve thereon while inhibiting transmission of vibration from said control lever to said sleeve, and a flexible boot extending between said sleeve and said housing at said opening to inhibit transmission of airborne noise therethrough.
Claim 2
Dependent Claim
155 words
A noise-suppressing lever assembly for manually controlling a vibration prone mechanism, said lever assembly having an operator manipulated end and an opposite end extending through an opening in a housing containing said mechanism comprising: a pivotable control lever having a first end extending into said housing through said opening and being coupled to said mechanism therein, a rigid knob grippable by an operator and coupled to the second end of said lever through vibration dampening means, an elongated sleeve encircling said control lever in radially spaced relation thereto and enclosing substantially the entire length of said lever between said housing and said knob, annular resilient mounting means disposed coaxially between said elongated sleeve and said control lever for supporting said sleeve thereon while inhibiting transmission of vibration from said control lever to said sleeve, and a flexible boot extending between said sleeve and said housing at said opening to inhibit transmission of airborne noise therethrough.
Claim 3
Dependent Claim
27 words
The noise-suppressing lever assembly of claim 1 wherein said elongated sleeve is formed of rigid material which is denser than the material of said sleeve mounting means.
Claim 4
Dependent Claim
22 words
The noise-suppressing lever assembly of claim 1 wherein said resilient mounting means comprises a plurality of axially spaced apart elastomeric ring members.
Claim 5
Dependent Claim
30 words
The noise-suppressing lever assembly of claim 1, wherein said knob is attached to said elongated sleeve through a resilient mount for further inhibiting transmission of vibration to said control knob.
Claim 6
Dependent Claim
21 words
The noise-suppressing lever assembly of claim 4 wherein said resilient mount is secured to said sleeve independently of said control lever.
Claim 7
Dependent Claim
18 words
The noise-suppressing lever assembly of claim 1 wherein said knob is secured to said sleeve by rigid means.
Claim 8
Dependent Claim
29 words
The noise-suppressing lever assembly of claim 1 further comprising a ring formed of acoustically absorbant material extending between said lever and said opening in spaced relation from said boot.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |