Patent US4266443A successfully refreshed from Google Patents.
US4266443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articulating guide spring
Assignee: Individual
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Filing: 1978-07-06
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Granted: 1981-05-12
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Expires: 1998-07-06
Abstract
Abstract The invention relates to new and useful improvements in the pivotal movement of the intra-articulate connecting rod used in reciprocating heat engines and positive displacement pumps and compressors. The device described is a small spring which is used to hold the articulating components in the toggled or untoggled configuration during periods when the system is free of dynamic operating loads or static friction loads when the system is not in operation. The purpose of the spring during engine operation is to guide the pivotal movement of the intra-articulating connecting rod and thus provide a smoother and more positive action particularly at low speed.
Inventors
- 👤 Edward M. McWhorter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:38
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/04; F02B75/045; F02B41/00; F02B41/02; F02B41/04; F16; F16C; F16C7/00; F16C7/02; F16C7/023; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2142; Y10T74/2144; Y10T74/2162
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
In connecting rods of the character described, an upper connecting rod pivotally attached to a lower connecting rod at a pivoting joint, a spring fixedly attached to the said upper connecting rod and to the said lower connecting rod at points above and below the said pivoting point respctively, said spring being under strain in a manner which tends to keep the said upper connecting rod and the said lower connecting rod in the untoggled condition relative to the said pivoting joint.
Claim 2
Dependent Claim
82 words
In connecting rods of the character described, an upper connecting rod pivotally attached to a lower connecting rod at a pivoting joint, a spring fixedly attached to the said upper connecting rod and to the said lower connecting rod at points above and below the said pivoting point respctively, said spring being under strain in a manner which tends to keep the said upper connecting rod and the said lower connecting rod in the untoggled condition relative to the said pivoting joint.
Claim 3
Dependent Claim
82 words
In connecting rods of the character described, an upper connecting rod pivotally attached to a lower connecting rod at a pivoting joint, a spring fixedly attached to the said upper connecting rod and to the said lower connecting rod at points above and below the said pivoting joint respectively, said spring being under strain in a manner which tends to keep the said upper connecting rod and the said lower connecting rod in the toggled condition relative to the said pivoting joint.
Claim 4
Dependent Claim
82 words
In connecting rods of the character described, an upper connecting rod pivotally attached to a lower connecting rod at a pivoting joint, a spring fixedly attached to the said upper connecting rod and to the said lower connecting rod at points above and below the said pivoting joint respectively, said spring being under strain in a manner which tends to keep the said upper connecting rod and the said lower connecting rod in the toggled condition relative to the said pivoting joint.
References Cited (Backward Citations)
US2726555A
Cited
US4089235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |