US3572964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor-pump housing
Assignee: Hoover Co
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Filing: 1969-05-23
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Granted: 1971-03-30
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Expires: 1989-05-23
Abstract
Abstract An integral motor-pump for a wet pickup floor conditioner has a housing comprising pump and motor chamber, the housing is divided along a horizontal parting line to form upper and lower housing sections having mating peripheral surfaces for sealing the pump chamber. An outlet port for the pump chamber comprises a U-shaped opening, in the lower housing section, in an outer wall of the pump chamber, extending from the parting line. An insert element has a planar vertical body with a tubular portion extending outwardly therefrom in a general horizontal direction. The marginal edge of the planar body fits in a recess in the opening in the lower housing section while the top edge of the insert element coincides with the parting line of the housing sections. A pump outlet passage extends coaxially through the tubing portion and the planar body of the insert element into the fan chamber. A flexible outlet hose is mounted on the tubing portion. The outlet port is fabricated in this fashion so that reasonably inexpensive molds may be used to fabricate the upper and lower housing sections of the motor-pump housing as unitary members.
Inventors
- 👤 Robert Dyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:48
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/4206
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
235 words
A housing for an integral motor-pump comprising: a. first and second housing sections defining a motor chamber and a pump chamber therewith, said first and second housing sections having mating peripheral surfaces for sealing said pump chamber along a parting line when said housing is assembled; b. an outlet port for said pump chamber including a substantially U-shaped opening through an outer wall of said first housing section, extending from a mating surface of said first housing section and connecting said pump chamber in the interior of said housing with the exterior of said housing; c. recess means formed in the boundary edge of said opening in said outer wall of the first housing section; and d. an insert element sealing said opening, said insert element including: (1) a substantially U-shaped planar body having a marginal edge and a top edge; (2) said marginal edge of said planar body of said insert element being received in said recess in said boundary edge of said opening in said first housing section, said top edge of said planar body of said insert element substantially coinciding with said parting line, a tubular portion projecting outwardly from said planar body for fitting a flexible tube thereon and (3) a passage extending generally coaxially through said tubular portion and said planar body of said insert element to connect said pump chamber within said housing with the exterior of said housing.
Claim 2
Dependent Claim
235 words
A housing for an integral motor-pump comprising: a. first and second housing sections defining a motor chamber and a pump chamber therewith, said first and second housing sections having mating peripheral surfaces for sealing said pump chamber along a parting line when said housing is assembled; b. an outlet port for said pump chamber including a substantially U-shaped opening through an outer wall of said first housing section, extending from a mating surface of said first housing section and connecting said pump chamber in the interior of said housing with the exterior of said housing; c. recess means formed in the boundary edge of said opening in said outer wall of the first housing section; and d. an insert element sealing said opening, said insert element including: (1) a substantially U-shaped planar body having a marginal edge and a top edge; (2) said marginal edge of said planar body of said insert element being received in said recess in said boundary edge of said opening in said first housing section, said top edge of said planar body of said insert element substantially coinciding with said parting line, a tubular portion projecting outwardly from said planar body for fitting a flexible tube thereon and (3) a passage extending generally coaxially through said tubular portion and said planar body of said insert element to connect said pump chamber within said housing with the exterior of said housing.
Claim 3
Dependent Claim
69 words
A housing for an integral motor-pump as recited in claim 1, wherein groove means are formed in the marginal edge of said planar body of said insert element and elastomeric sealing means is fitted in said marginal groove means and trapped between the bottom of said groove means and the bottom of said recess under compression, whereby said insert element forms a watertight connection with said first housing section.
Claim 4
Dependent Claim
62 words
A housing for an integral motor-pump as recited in claim 2, wherein a groove portion is formed across the top edge of said planar body, groove means in said peripheral mating surface of said first housing section around said pump chamber and with said groove portion in the top edge of said insert element forming a groove completely surrounding said pump chamber.
Claim 5
Dependent Claim
100 words
A housing for an integral motor-pump as recited in claim 1, wherein said body section of said insert element has a pair of opposed ears extending outwardly of said marginal edge and in the plane of said planar body, said ears being located adjacent said top edge of said planar body, and opposing sockets extending into the wall of said first housing section through said recess on opposite sides of said opening adjacent said parting line, whereby said position of said top edge of said insert element is positively located with respect to said parting line of said housing sections.
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |