US3885449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foot operation for a pump
Assignee: Individual
•
Filing: 1974-06-24
•
Granted: 1975-05-27
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Expires: 1994-06-24
Abstract
Abstract A pivotally mounted foot pedal for manual operation of a pump or the like, wherein the pedal is confined to its operating plane by a pivot and a rod which additionally supports the return spring, and after a power stroke limits the movement of the pedal during its return back into its ready position and thus effectively controls the urgency of the return spring, and also prevents damage to parts moving in relation to one another.
Inventors
- 👤 Cyril Robert Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:17
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/14; G; G05; G05G; G05G5/00; G05G5/04; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/1896; Y10T74/20; Y10T74/20528; Y10T74/20576; Y10T74/20888
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
A foot operator for a pump or the like comprising a member mounted for movement from a ready position through a pivotal traverse providing a power stroke, a guide member oriented in the plane of said pivotal traverse operatively arranged to confine said member to said plane during said power stroke, and a return spring so disposed on said guide member as to be compressed during said pivotal traverse and to bias said member through a reverse direction return stroke back into said ready position thereof, said guide member having a portion located along the path of said pivotal traverse in physically abutting relation to said member during said return stroke, whereby said guide member controls the spring bias used for said return stroke by limiting the extent of said reverse direction movement of said member, wherein said guide member is a cylindrical rod which is projected through an arcuate slot in said member.
Claim 2
Dependent Claim
154 words
A foot operator for a pump or the like comprising a member mounted for movement from a ready position through a pivotal traverse providing a power stroke, a guide member oriented in the plane of said pivotal traverse operatively arranged to confine said member to said plane during said power stroke, and a return spring so disposed on said guide member as to be compressed during said pivotal traverse and to bias said member through a reverse direction return stroke back into said ready position thereof, said guide member having a portion located along the path of said pivotal traverse in physically abutting relation to said member during said return stroke, whereby said guide member controls the spring bias used for said return stroke by limiting the extent of said reverse direction movement of said member, wherein said guide member is a cylindrical rod which is projected through an arcuate slot in said member.
Claim 3
Dependent Claim
30 words
A foot operator for a pump or the like as claimed in claim 1 wherein said return spring is a helical coil disposed in encircling relation about said guide member.
Claim 4
Dependent Claim
49 words
A foot operator for a pump or the like as claimed in claim 2 wherein said pivotally mounted member is of an L-Shape formed by two intersecting legs, said pivotal mounting being adjacent the end of one leg thereby presenting the other leg for foot-actuation through said power stroke.
Claim 5
Dependent Claim
27 words
A foot operator for a pump or the like as claimed in claim 3 wherein said arcuate slot is provided in said leg having said pivotal mounting.
Claim 6
Dependent Claim
38 words
A foot operator for a pump or the like as claimed in claim 4 wherein said foot operator operates a pump and said guide member is oriented in substantially parallel relation to the piston rod of said pump.
References Cited (Backward Citations)
US1159505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |