Patent US3830488A successfully refreshed from Google Patents.
US3830488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller manipulating and work stand
Assignee: United States Department of the Navy
•
Filing: 1973-11-12
•
Granted: 1974-08-20
•
Expires: 1993-11-12
Abstract
Abstract A manipulating and work stand, for handling a propeller with a mandrel shaft, which includes a base and a pair of spaced apart support members, one of the support members being upright and fixed at its bottom to the base and the other support member being pivotally connected to the base for rotation toward and away from the upright support member. Receptacles are mounted at the tops of both of the support members for receiving the ends of the mandrel shaft. The receptacle at the top of the fixed upright support member may be a tubular bearing which is closed at one end, and the receptacle mounted at the top of the pivotal support member may be a saddle which is open on one side and which is pivotally connected to the top of the pivotal support member. A drive means may be connected between the base and the pivotal support member for driving this support member upwardly so that the saddle will receive one end of the mandrel shaft. In this manner, the mandrel shaft through the propeller may be lowered vertically so that the closed receptacle receives one end of the shaft and then pivoted so that the saddle receives the other end of the shaft.
Inventors
- 👤 G Nakano
- 👤 J Wilger
- 👤 C Lai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:58
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/0007; Y; Y10; Y10S; Y10S269/00; Y10S269/909
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
163 words
A manipulating and work stand for handling a propeller with a mandrel shaft comprising: a base; a generally upright support fixedly mounted at its bottom end to said base; first receptacle means for receiving one end of the mandrel shaft; means pivotally mounting the first receptacle means to the top of the fixed support for rotation in a vertical plane through said fixed support; another support having top and bottom ends; means pivotally mounting the bottom end of the other support to the base for rotation of the other support within said vertical plane; second receptacle means for receiving the other end of the mandrel shaft; and means mounting the second receptacle means to the top of the pivotal support means; whereby one end of the mandrel shaft of the propeller may be vertically inserted in the first receptacle means and then rotated in the vertical plane for mating engagement of the other end of the mandrel shaft with the second receptacle means.
Claim 2
Dependent Claim
163 words
A manipulating and work stand for handling a propeller with a mandrel shaft comprising: a base; a generally upright support fixedly mounted at its bottom end to said base; first receptacle means for receiving one end of the mandrel shaft; means pivotally mounting the first receptacle means to the top of the fixed support for rotation in a vertical plane through said fixed support; another support having top and bottom ends; means pivotally mounting the bottom end of the other support to the base for rotation of the other support within said vertical plane; second receptacle means for receiving the other end of the mandrel shaft; and means mounting the second receptacle means to the top of the pivotal support means; whereby one end of the mandrel shaft of the propeller may be vertically inserted in the first receptacle means and then rotated in the vertical plane for mating engagement of the other end of the mandrel shaft with the second receptacle means.
Claim 3
Dependent Claim
25 words
A manipulating and work stand as claimed in claim 1 including: the first receptacle means being a tubular bearing which is closed at one end.
Claim 4
Dependent Claim
29 words
A manipulating and work stand as claimed in claim 2 including: the second receptacle means being a saddle which is open on one side for receiving the mandrel shaft.
Claim 5
Dependent Claim
27 words
A manipulating and work stand as claimed in claim 3 including: the means mounting the saddle to the top of the pivotal support means being a pivot.
Claim 6
Dependent Claim
47 words
A manipulating and work stand as claimed in claim 4 including: an elongated drive means pivoted at one end to the base and at the other end to the pivotal support means for rotating the pivotal support means so that the saddle will receive the mandrel shaft.
Claim 7
Dependent Claim
47 words
A manipulating and work stand as claimed in claim 1 including: an elongated drive means pivoted at one end to the base and at the other end to the pivotal support means for rotating the pivotal support means so that the saddle will receive the mandrel shaft.
Claim 8
Dependent Claim
43 words
A manipulating and work stand as claimed in claim 6 including: the first receptacle means being a tubular bearing which is closed at one end; the second receptacle means being a saddle which is open on one side for receiving the mandrel shaft.
Claim 9
Dependent Claim
27 words
A manipulating and work stand as claimed in claim 7 including: the means mounting the saddle to the top of the pivotal support means being a pivot.
Claim 10
Dependent Claim
51 words
A manipulating and work stand as claimed in claim 8 including: the fixed upright support being a post; the pivotal support being an A-frame with the bottom of the legs of the frame Being pivotally connected to the base; and the drive means being telescoping tubes which are actuated by fluid.
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |